Eric Buhler

• PhD, HDR
• Professor (Full) at Université Paris Cité

Amino-acid derived biodynamers, characterized as dynamic biopolymers, are synthesized under acidic pH conditions through dynamic covalent chemistry (DCC) between amino acid hydrazides and carbazole hexaethylene glycols (CA-HG). In the field of biomedical research, especially for the designs of smart drug delivery systems, DCC has increasingly gaine...

Molecular motors are capable of producing mechanical work on their environment by using their unique capacity to generate non-reciprocal autonomous motions at the nanoscale. Although their operating principles are now well understood, artificial molecular motors have yet to demonstrate their general capacity to confer novel properties on (supra)mol...

The unidirectional rotation of chemically crosslinked light‐driven molecular motors is shown to progressively shift the swelling equilibrium of hydrogels. The concentration of molecular motors and the initial strand density of the polymer network are key parameters to modulate the macroscopic contraction of the material, and both parameters can be...

Light‐driven molecular motors were used as photoactive crosslinks in hydrogels. Their unidirectional rotation under UV light triggers a shift in the equilibrium swelling of the networks because of the creation of new entanglements. In their Research Article, Nicolas Giuseppone and co‐workers (DOI: 10.1002/anie.202300263) exploit this actuation to p...

Light‐driven molecular motors were used as photoactive crosslinks in hydrogels. Their unidirectional rotation under UV light triggers a shift in the equilibrium swelling of the networks because of the creation of new entanglements. In their Research Article, Nicolas Giuseppone and co‐workers (DOI: 10.1002/ange.202300263) exploit this actuation to p...

The unidirectional rotation of chemically crosslinked light‐driven molecular motors is shown to progressively shift the swelling equilibrium of hydrogels. The concentration of molecular motors and the initial strand density of the polymer network are key parameters to modulate the macroscopic contraction of the material, and both parameters can be...

The recent success of mRNA vaccines using lipid-based vectors highlights the importance of strategies for nucleotide delivery under the pandemic situation. Although current mRNA delivery is focused on lipid-based vectors, still they need to be optimized for increasing stability, targeting, and efficiency, and for reducing toxicity. In this regard,...

In the present manuscript, we describe how we successfully used ligand-based virtual screening (LBVS) to identify two small-molecule, drug-like hit classes with excellent ADMET profiles against the difficult to address microbial enzyme 1-deoxy-d-xylulose-5-phosphate synthase (DXPS). In the fight against antimicrobial resistance (AMR), it has become...

In the present manuscript, we describe how we successfully used ligand-based virtual screening (LBVS) to identify two small-molecule, drug-like hit classes with excellent ADMET profiles against the difficult to address microbial enzyme 1-deoxy-D-xylulose-5-phosphate synthase (DXPS). In the fight against antimicrobial resistance (AMR) it has become...

In the present manuscript, we describe how we successfully used ligand-based virtual screening (LBVS) to identify two small-molecule, drug-like hit classes with excellent ADMET profiles against the difficult to address microbial enzyme 1-deoxy-D-xylulose-5-phosphate synthase (DXPS). In the fight against antimicrobial resistance (AMR) it has become...

The detailed structure of active polymer gels built by integrating light-driven rotary molecular motors as reticulation units in polymer networks is discussed as a function of gel composition. Upon light-irradiation, the collective rotation of molecular motors is translated into the macroscopic contraction of the gels through polymer chains twistin...

Polymerization of carbazole dicarboxaldehydes and lysine derivatives by imine and acylhydrazone formation afforded peptide-derived molecular biodynamers. Characterization of their physicochemical properties revealed an interesting morphology change upon polymerization from monomers forming submicrometer spherical micelles to nanometer-sized rigid-r...

Dilute solutions of electronically active molecules capable of irradiation-driven supramolecular self-assembly are studied by dynamic light scattering. We detect unusual well-defined oscillations in the long time range of the homodyne intensity correlation function for all solutions that were irradiated with white light prior to the measurements. T...

We study for the first time the structure of stable finite size clusters (i.e., colloidal molecules) obtained by self-assembly of cationic gold nanoparticles (i.e., atoms) mediated by a flexible polyanion. We reveal with non-denaturizing techniques a striking structural transition from 1D small chains of 12 gold nanoparticles (AuNPs) with a self-av...

The networking of individual artificial molecular motors into collective actuation systems is a promising approach for the design of active materials working out of thermodynamic equilibrium. Here, we report the first mechanical studies on active polymer gels built by integrating light-driven rotary molecular motors as reticulation units in polymer...

The condensation of amphiphilic imines from aldehydes and amines in water can lead to a particular autocatalytic behaviour known as autopoiesis, and in which the closed micellar structure made by the amphiphile at mesoscale can accelerate the condensation of its constituents. Here, by a combination of analytical tools including DOSY NMR, as well as...

A clickable fullerene hexa-adduct scaffold has been functionalized with twelve triarylamine subunits. The light-triggered self-assembly of this molecular unit leads to honeycomb-like 3D-structures with inner pores of around 10 nm...

Dynamic proteoids are dynamic covalent analogues of proteins which are generated through the reversible polymerization of amino‐acid‐ or peptide‐derived monomers. The authors design and prepare a series of dynamic proteoids based on the reversible polycondensation of six types of dipeptide hydrazides bearing different categories of side chains. The...

Hydrophobic drug candidates require innovative formulation agents. We designed and synthesized lipid-DNA polymers containing varying numbers of hydrophobic alkyl chains. The hydrophobicity of these amphiphiles is easily tunable by introducing a defined number of alkyl chain-modified nucleotides during standard solid-phase synthesis of DNA using an...

In this article, the dynamic structure of complex supramolecular polymers composed of bistable [c2]daisy chain rotaxanes as molecular machines that are linked by ureidopyrimidinones (Upy) as recognition moieties is studied. pH actuation of the integrated mechanically active rotaxanes controls the contraction/extension of the polymer chains as well...

The implementation of molecular machines in polymer science is of high interest to transfer mechanical motions from nanoscale to macroscale in order to access new kinds of active devices and materials. Towards this objective, thermodynamic and topological aspects need to be explored for reaching efficient systems capable of producing a useful work....

Dynamic proteoids are dynamic covalent analogues of proteins which can be used as novel adaptive biomaterials. We designed and synthesized a range of sugar-containing dynamic proteoid biodynamers based on the polycondensation of different types of amino acid and dipeptide hydrazides with a biological aliphatic dialdehyde and a nonbiological aromati...

The implementation of artificial molecular machines in polymer science is an important objective that challenges chemists and physicists in order to access an entirely new class of smart materials. To design such systems, the amplification of a mechanical actuation from the nanoscale up to a macroscopic response in the bulk material is a central is...

Aggregation of nanoparticles of given size $R$ induced by addition of a polymer strongly depends on its degree of rigidity. This is shown here on a large variety of silica nanoparticle self-assemblies obtained by electrostatic complexation with carefully selected oppositely charged bio-polyelectrolytes of different rigidity. The effective rigidity...

Aggregation of nanoparticles of given size R induced by addition of a polymer strongly depends on its degree of rigidity. This is shown here on a large variety of silica nanoparticle self-assemblies obtained by electrostatic complexation with carefully selected oppositely charged biopolyelectrolytes of different rigidity. The effective rigidity is...

A range of doubly dynamic proteoid biodynamers based on the polycondensation of various categories of amino acid hydrazides with a di- aldehyde have been generated through formation of two types of reversible CN bonds (imine and acylhydrazone). Their structures and properties (rates of polymerization and dynamic character) have been characterized b...

Self-healing polymers hold great promise for the future, enhancing in particular the longevity of polymeric materials. We describe a self-healing covalent polymer, presenting an extensive array of hydrogen-bonding sites based on the combination of urea, urethane, and bis-acyl-hydrazine units. Solvent-cast thin-films prepared by polycondensation of...

http://onlinelibrary.wiley.com/wol1/doi/10.1002/anie.201509813/abstract An acid–base switchable [c2]daisy chain rotaxane terminated with two 2,6-diacetylamino pyridine units has been self-assembled with a bis(uracil) linker. The complementary hydrogen-bond recognition patterns, together with lateral van der Waals aggregations, result in the hierarc...

Supramolecular self-assembly is a multiple length-scale and time-dependent process involving many coexisting components. Such complexity requires suitable strategies to extract quantitative dynamical and structural information on all involved species. Here, we detail an original light scattering method to study the kinetics of tailored triarylamine...

We have investigated the self-assembly in water of molecules having a single hydrophobic bis-urea domain linked to different hydrophilic functional side chains, i.e. bioactive peptidic residues and fluorescent cyanine dyes. By using a combination of spectroscopy, scattering, and microscopy techniques, we show that each one of these molecules can in...

We study for the first time the structure of stable finite size clusters (i.e. colloidal molecules) obtained by self-assembly of cationic gold nanoparticles (i.e. atoms) mediated by a flexible polyanion. We reveal with non denaturizing techniques a striking structural transition from 1D small chains of 12 gold nanoparticles (AuNPs) with a self-avoi...

By using a combination of experimental and theoretical tools, we elucidate unique physical characteristics of supramolecular triarylamine nanowires (STANWs), their packed structure, as well as the entire kinetics of the associated radical-controlled supramolecular polymerization process. AFM, small angle X-ray scattering, and all-atomic computer mo...

Self-healing polymers are a class of functional polymers that, by the virtue of the presence of certain dynamic chemical linkages, may undergo self-repair at a mechanically cut surface. Herein we report the synthesis of a self-healing polymer giving access to double dynamicity within the polymer network by making use simultaneously of reversible co...

Multiplication of functional units through self-assembly is a powerful way to new properties and functions. In particular, self-organization of components decorated with recognition groups leads to multivalent entities, amenable to strong and selective binding with multivalent targets, such as protein receptors. Here we describe an efficient, supra...

Dynamic covalent surfactants have been obtained by the reversible condensation of a hydrophobic aldehyde (ended by an ionic tip) with various neutral polyethylene glycol based hydrophilic amines. In water, the duality between the two hydrophilic domains (charged and neutral) leads to their segregation when the surfactants are self-assembled within...

Materials of supramolecular nature have attracted much attention owing to their interesting features, such as self-reparability and material robustness, that are imparted by noncovalent interactions to synthetic materials. Among the various structures and synthetic methodologies that may be considered for this purpose, the introduction of extensive...

Double-dynamic polymers, incorporating both molecular and supramolecular dynamic features (“double dynamers”) have been generated, where these functions are present in a nonstoichiometric ratio in the main chain of the polymer. It has been achieved by (1) the formation of covalent oligo-dynamers in which the monomers are connected by reversible cov...

The electrostatic complexation between model negatively charged silica nanoparticles (NPs) with radius R 10 nm and chitosan, a natural polyelectrolyte bearing positive charges with a semi-rigid backbone of a persistence length of Lp 9 nm, was studied by a combination of SANS, SAXS, light scattering, and cryo-TEM. In this system, corresponding to Lp...

We describe a novel approach to the generation of a supramolecular polymer and its assembly into microcapsules by the aerial oxidation of a supramolecular building block. It involves the initial build-up of a ditopic supramolecular component by hydrogen bonding association of two complementary subunits, followed by its covalent polymerization throu...

Pumping iron: Double-threaded rotaxanes can be linked to coordination units and polymerized in the presence of iron or zinc ions. pH modulation triggers cooperative contractions (or extensions) of the individual rotaxanes, thus resulting in an amplified motion of the muscle-like supramolecular chains with changes of their contour lengths of several...

Künstliche Muskeln können nach einem Bottom‐up‐Ansatz erzeugt werden, bei dem die kontrollierten Bewegungen einer sehr großen Zahl molekularer Maschinen gekoppelt werden. Das Titelbild zeigt eine Muskelfaser, aus der ein einkettiges supramolekulares Polymer aus Tausenden teleskopischer Rotaxane herausragt. N. Giuseppone et al. zeigen in der Zuschri...

Artificial muscles can be created by using a bottom‐up approach that involves coupling the controlled motions of a very high number of molecular machines. The cover picture shows a muscular fiber from which a single‐chain supramolecular polymer made of thousands of telescopic rotaxanes emerges. In their Communication on page 12504 ff., N. Giuseppon...

We show by combining small-angle X-ray scattering (SAXS) and cryo-transmission electron microscopy (cryo-TEM) that anionic silica nanoparticles (SiNPs) assemble into well-defined 1D cluster when mixed with a dilute solution of semiflexible chitosan polycation. The nanorods are stable in excess of SiNPs and composed of 10 SiNPs well-ordered into str...

We study by Small Angle Neutron Scattering (SANS) the structure of Hyaluronan -Lysozyme complexes. Hyaluronan (HA) is a polysaccharide of 9 nm intrinsic persistence length that bears one negative charge per disaccharide monomer (Mmol = 401.3 g/mol); two molecular weights, Mw = 6000 and 500 000 Da were used. The pH was adjusted at 4.7 and 7.4 so tha...

Tailored triarylamine units modified with terpyridine ligands were coordinated to Zn(2+) ions and characterized as discrete dimeric entities. Interestingly, when these complexes were subsequently irradiated with simple visible light in chloroform, they readily self-assembled into monodisperse spheres with a mean diameter of 160 nm.

The structural and dynamical properties of dilute aqueous solutions of poly(ethylene glycol)-perylene diimides (PEG(n)-PDI) have been investigated by means of static and dynamic light scattering, TEM microscopy, and small-angle X-ray scattering experiments. The amphiphilic PEG(n)-PDI molecules first self-assemble into stable and compact primary sta...

Polypeptide-type dynamic biopolymers (biodynamers) have been generated by polycondensation via acylhydrazone and imine formation of amino-acid-derived components that polymerize driven by self-organization. They have been characterized as globular particles, reminiscent of folded proteins, by cryo-TEM, LS, DOSY NMR, and SANS studies. The reversible...

Interactions of plant tannins with polysaccharide hyaluronan are studied by means of light scattering and small-angle X-ray scattering (SAXS). In this paper, we show that (1) the tannin-polysaccharide complexes remain stable in colloidal suspension; (2) the masses and structures of colloidal tannin-polysaccharide objects depend on the tannin degree...

In this paper we report the influence of biopolymer folding on nanoparticle spatial distribution in two typical bio-nanocomposite hydrogels. These systems consist of negatively charged nanosized fillers (polyoxotungstate clusters and silica particles, 2.2 nm and 23.0 nm in diameter, respectively) dispersed at low volume fractions in a positively ch...

The structural variations of dynamic combinatorial mesophases are investigated in dilute aqueous solutions by a combination of small-angle-neutron, X-ray, and light scattering. The supramolecular structures are composed of self-assembled dynamic covalent hydrophobic and hydrophilic blocks (Dynablocks), linked together by reversible and pH-dependent...

A set of carbazole- and benzene-derived di(aldehyde) and di(acylhydrazine) monomers containing hexaglyme groups to impart water solubility has been synthesized. Mixing a given di(aldehyde) and di(acylhydrazine) pair in acidic aqueous solution causes polymerizationthroughreversibleacylhydrazonecondensation.Thestructuresof theresultantamphiphilicpoly...

Let there be more light: Triarylamine-based building blocks respond to visible-light exposure by the formation of cationic radicals that hierarchically self-assemble into molecular wires, which in turn combine within larger fibers (see picture). The stimuli-responsive supramolecular scaffold, which is created by charge transfer and reversibly broke...

Supramolecular polymers formed from molecular recognition directed association between monomers bearing complementary hydrogen bonding groups were studied by rheology, small-angle neutron and light scattering experiments. The semiflexible fibers consist of few aggregated monomolecular wires. At T= 25 C the formation of branched aggregates occurs ar...

Dynamic glycopolymers have been generated by polycondensation through acylhydrazone formation between components bearing lateral bioactive oligosaccharide chains. They have been characterized as bottlebrush type by cryo-TEM and SANS studies. They present remarkable fluorescence properties whose emission wavelengths depend on the constitution of the...

The possibility to tune the associations of dynablocks at the molecular level by using pH modulations, resulting in structuring variations at mesoscale, was reported. A set of building blocks such as hydrophobic aromatic aldehyde and benzylamine derivative, having a hydrophilic PEG chain of 11 units, and aniline derivative having a shorter PEG chai...

We use small angle neutron scattering (SANS), with an original analysis method, to obtain both the characteristic sizes and the inner composition of lysozyme-pectin complexes depending on the charge density. Lysozyme is a globular protein and pectin a natural anionic semiflexible polysaccharide with a degree of methylation (DM) 0, 43, and 74. For o...

We report here the development of morphological switches as a new tool that can be used in constitutional dynamic chemistry (CDC) to control the constitution of the whole dynamic system. Molecules that have well-defined but switchable shapes were designed and synthesized. Their restrained conformational states were characterized both in the solid a...

Polymer, heal thyself! Dynamic polymers formed by a reversible Diels–Alder reaction were formed and studied by using neutron scattering at room temperature. They were used to obtain thin films that displayed self‐healing at room temperature (see figure). magnified image Dynamers based on reversible Diels–Alder chemistry have been obtained and shown...

(Figure Presented) Survival of the fittest: Self-assemblies made of dynamic block copolymers (dynablocks) can self-replicate by catalyzing the formation of their own building blocks. Moreover, in competition experiments, the differential thermodynamic stabilities and autocatalytic efficiencies of these self-assemblies lead to sigmoid growth of the...

Aggregation and other interactions are suppressed for a biological semiflexible polyelectrolyte, hyaluronan (HA), when it is embedded in a mixture with another negatively charged and flexible polyelectrolyte chain, sodium polystyrene sulfonate. We see directly HA only in the mixture using small-angle neutron scattering (SANS), isotopic labelling an...

The dynamical properties of semidilute solutions of supramolecular polymers formed from molecular recognition directed association between monomers bearing complementary hydrogen bonding groups were investigated by rheological and dynamic light scattering experiments. The steady-state flow curves showed a shear banding type instability, namely the...

Small-angle neutron scattering experiments show that the structure of the hydrogels formed by the guanosine hydrazide 1 is characterized by a network of thick fibers, whereas the gels obtained by condensation of 1 with pyridoxal monophosphate 2 result from the formation of single semi-flexible columns of self-assembled quartets. The observed struct...

Light scattering experiments were carried out on aqueous micellar solutions of cetylpyridinium chlorate (CPClO3) in the presence of sodium chlorate (NaClO3) as a function of surfactant concentration. The time autocorrelation function of the scattered field is found to be bimodal. The slow relaxation time, that is assumed to be the terminal time of...

The nanostructure of the fibrillar supramolecular aggregates generated in decane solutions of homoditopic heterocomplementary monomers forming sextuple hydrogen-bond-mediated self-assemblies was investigated by small-angle neutron scattering and cryogenic-temperature transmission electron microscopy. The persistence length (Lp) of the fibrillar agg...

Ammonium lithocholate nanotubes (NH4LC) have been prepared in alkaline ammonia solutions and exhibited remarkable monodisperse cross-sectional dimensions (external diameter = 52 nm) as shown by cryo-transmission electron microscopy measurements. A classical electroless metallic replication method was used with a single poly(ethylene-imine) PEI laye...

The effect of polyelectrolyte addition on the properties of an oil-in-water (O/W) microemulsion of weakly charged spherical micelles is studied. The 81 A radius O/W droplets in this system can be charged by the partial substitution of the nonionic surfactant by a cationic surfactant. The effect of the addition of poly(acrylic acid) (PAA), which is...

The structural and dynamic properties of low ionic strength micellar solutions of the cationic surfactant perfluorooctylbutane trimethylammonium bromide have been investigated by cryo-TEM, small-angle neutron scattering, small-angle X-ray scattering, T-jump and rheological experiments. The surfactant molecules self-assemble into narrow ribbons with...

The synthesis of homoditopic heterocomplementary monomers forming sextuple hydrogen-bond-mediated self-assemblies in apolar solvents is described. The nanostructures of the fibrillar aggregates formed in decane solutions of such monomers were investigated by small-angle neutron scattering. The fibers were found to be rigid, with an average length t...

A microemulsion of decane droplets stabilized by a nonionic surfactant film is progressively charged by substitution of a nonionic surfactant molecule by a cationic surfactant. We check that the microemulsion droplets remain identical within the explored range of volume fraction (0.02-0.18) and of the number of charges per droplet (0-40). We probe...

A microemulsion of decane droplets stabilized by a non-ionic surfactant film is progressively charged by substitution of a non-ionic surfactant molecule by a cationic surfactant. We check that the microemulsion droplets remain identical within the explored range of volume fraction (0.02 to 0.18) and of the number of charge per droplets (0 to 40) ....

The mixed micellization between the perfluorooctylbutane trimethylammonium bromide (C8F17) and the cetyltrimethylammonium bromide (CTAB) surfactants in the presence of KBr has been investigated. Surface tension experiments revealed a demixed micelles behavior. At high ionic strength ([KBr] ≥ 100 mM), semidilute solutions exhibit a phase separation...

The phase behavior of hydrophobically modified chitosans (HMCs) in aqueous solution has been investigated using scattering and rheology experiments. We observed four regions on the phase diagram of the associative polymer: (i) a supernatant phase (unimers phase) at low polymer concentration; (ii) a dilute solution of intermolecularly bridged flower...

In this study, we have directly determined for the first time the structure and the chain conformation of hyaluronan, a model semirigid polyelectrolyte polysaccharide. At high ionic strength, detailed information on the chain flexibility has been obtained from combined light and small-angle neutron scattering experiments by applying different fitti...

Detergent extracts of microsomal fractions from Saprolegnia monoïca and blackberry (Rubus fruticosus) cells were incubated with UDP-glucose to yield in vitro (1-->3)-beta-d-glucans. The insoluble products were analyzed by conventional and cryo transmission electron microscopy, X-ray diffraction, and (13)C CP/MAS NMR, and their molecular weights wer...

The mixed micellization between the cationic gemini surfactant [C12H25(CH3)2N+(C2H4)N+(CH3)2C12H25*2Br-] and the cationic cetyltrimethylammonium bromide (CTAB) in 150 mM KBr solutions has been investigated. The variation of the cmc of the mixtures, measured by surface tension experiments, with composition revealed synergism in micelle formation. T-...

In a SANS experiment, we have directly determined for the first time the conformation of hyaluronan, a model semirigid polyelectrolyte. At high ionic strength, this is completely possible, where the scattered intensity crosses over (when decreasing q) from a q(-1) rod variation to a q(-2) and, where fitting to the "wormlike" chain model gives the b...

Microtubule assembly from purified tubulin preparations involves both microtubule nucleation and elongation. Whereas elongation is well documented, microtubule nucleation remains poorly understood because of difficulties in isolating molecular intermediates between tubulin dimers and microtubules. Based on kinetic studies, we have previously propos...

This paper concerns the molecular characterisation of hyaluronan polymeric chain. The main point discussed is the determination of the intrinsic persistence length Lp by different experimental techniques; Lp is equal to a value of about 70 Å, in good agreement with the value obtained by molecular modelling. From this value, the intrinsic viscosity...

Dynamic and static light scattering experiments were performed on 0.1 M NaCl aqueous solutions of semirigid hyaluronan and rigid xanthan in the dilute and semidilute regime. In the dilute regime, typical good solvent behavior is found, and the intrinsic persistence length of hyaluronan (≈100 Å) and xanthan (≈1000 Å) is determined. However, in the s...

The structural and dynamic properties of low ionic strength micellar solutions of the cationic surfactant perfluorooctylbutane trimethylammonium bromide have been investigated by means of dynamic and static light scattering and rheological experiments. In the range of concentration extending from the critical micelle concentration to about the over...

We have examined the structure of hydrophobically modified chitosans in a selective aqueous solution at T = 25 °C, i.e., a nonsolvent for the alkyl grafted chains and a good solvent for the polyelectrolyte chitosan backbone. The behavior of the hydrophobically modified chitosan was investigated using viscosity and static and dynamic light scatterin...

Highly charged semiflexible polyelectrolyte chitosan was characterized in dilute and semidilute aqueous solutions in the presence of excess of salt by viscosity and static and dynamic light scattering. In the present paper, we report on the variation of the structural and dynamical parameters as a function of the ionic strength. Size of the polyion...

Dynamic and static light-scattering experiments were performed on aqueous solutions of the highly charged semiflexible polyelectrolyte chitosan in the dilute and the semidilute regime. In the dilute regime, typical good solvent behavior is found. However, in the overlapped regime the time autocorrelation function of the scattered electric field is...

The behavior of polymeric surfactant polyvinyl acetate (PVAC)-b-poly(1,1,2,2-tetrahydroperfluorooctyl acrylate) (PTAN) in supercritical carbon dioxide (CO2) was investigated using static and dynamic light scattering. We observed three regions on the phase diagram of the copolymer in supercritical CO2:  (i) two-phase region at low CO2 density; (ii)...

The effect of salt (KBr) additions on the behavior of the dimeric surfactant 12-2-12 (ethanediyl-1,2-bis(dodecyldimethylammonium bromide)) has been investigated using small angle neutron scattering (SANS) and dynamic light scattering (DLS). The effect of temperature and additions of DTAB (dodecyltrimethylammonium bromide, “monomer” of 12-2-12) has...

Static and Dynamic Light Scattering experiments were carried out on aqueous micellar solutions of hexadecyltrimethylammonium bromide (CTAB) in the presence of potassium bromide (KBr) as a function of surfactant volume fraction, temperature and salt content. This study confirms strikingly the analogy between the behaviour in semi-dilute regime of el...