Aude Demessence

Aude Demessence
Claude Bernard University Lyon 1 | UCBL · Institut de recherches sur la catalyse et l'environnement de Lyon (IRCELYON)

PhD

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56
Publications
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Publications

Publications (56)
Article
The new carboxylato-bridged NiII network {Ni3(μ3-OH)2[(κ1-κ1)-(κ1-κ1)-μ4tdc]2(H2O)4}n (H2tdc = 2,5-thiophenedicarboxylic acid) has been synthesized hydrothermally. The structure has been characterized by synchrotron powder X-ray diffraction, thermogravimetric analysis, IR and UV/Vis spectroscopy. The title compound consists of [Ni1O6]2[Ni2O6] chain...
Article
Use of the ditopic ligand 1,4-benzenedi(1H-1,2,3-triazole) (H(2)BDTri) enabled isolation of two new three-dimensional metal-organic frameworks of formulae Cu(BDTri)L in which L=DMF (1) and diethylformamide (DEF; 2). These compounds have the same primary structure, featuring one-dimensional channels with the bridging DMF or DEF molecules pointing in...
Article
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Stable nanoparticles dispersions of the porous hybrid MIL-101(Cr) allow dip-coating of high quality optical thin films with dual hierarchical porous structure. Moreover, for the first time, mechanical and sorption properties of mesoporous MOFs based thin films are evaluated.
Article
Reaction of CuCl(2) x 2 H(2)O with 1,3,5-tris(1H-1,2,3-triazol-5-yl)benzene (H(3)BTTri) in DMF at 100 degrees C generates the metal-organic framework H(3)[(Cu(4)Cl)(3)(BTTri)(8)(DMF)(12)] x 7 DMF x 76 H(2)O (1-DMF). The sodalite-type structure of the framework consists of BTTri(3-)-linked [Cu(4)Cl](7+) square clusters in which each Cu(II) center ha...
Article
A new carboxylato-bridged CoII network of formula {Co((kappa1-kappa1)-(kappa1-mu2)-mu4-TDC)(mu2-H2O)0.5(H2O)}n (H2TDC=2,5-thiophenedicarboxylic acid) has been hydrothermally synthesized and characterized by single-crystal X-ray diffraction, thermogravimetric analysis, and IR and UV-visible spectroscopies. The title compound is made of chains of CoI...
Article
We synthesized luminescent coordination polymer glasses composed of d10 metal cyanides and triphenylphosphines through melt-quenching and mechanical milling protocols. Synchrotron X-ray total scattering measurements and solid-state NMR revealed their one-dimensional...
Article
The discovery of an universal memory that exhibits fast access speed, high‐density storage, and non‐volatility has fueled research into phase‐change materials over the past decades. In spite of the efficiency of the inorganic chalcogenides for Phase‐Change Random Access Memory (PCRAM), they still have some inherent drawbacks, such as high temperatu...
Article
The discovery of an universal memory that exhibits fast access speed, high‐density storage, and non‐volatility has fueled research into phase‐change materials over the past decades. In spite of the efficiency of the inorganic chalcogenides for Phase‐Change Random Access Memory (PCRAM), they still have some inherent drawbacks, such as high temperatu...
Article
A series of d10 coinage metal thiosalicylate coordination polymers (CPs) is reported. The 1D structures of the three CPs are formed by M3S3 fused hexagons for Cu and Ag compounds and interpenetrated helical chains for Au CP. Depending on the metal, solid‐state red and NIR emissive CPs are obtained with quantum yields up to 50 %, providing a great o...
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We report an interfacial approach for fabricating coordination polymer (CP) crystal films and patterns on a polymer surface using a metal ion-doped polymer substrate.
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A new tridimentional Metal Organic Chalcogenolate, made of 1,3-benzenedithiolate bridging ligand and Ag(I), [Ag 2 (1,3-BDT)] n , is reported. This coordination polymer has good thermal stability in air and while it is insulator,...
Article
Au/ZrO2 catalyst prepared from Au25(SG)18 nanoclusters (SG stands for glutathione) deposited on ZrO2 has shown to be an efficient system for the oxidative esterification of furfural with methanol. The influence of the supported nanoclusters was studied and showed that partial calcination of the supported nanoclusters at 300 °C was sufficient for a...
Article
Gold thiolate coordination polymers (CPs) are anisotropic materials with 1D or 2D networks exhibiting a large palette of photoluminescence properties. In this paper, we show that, from both lamellar acid and ester, [Au(p-SPhCO2X)]n CPs (X = H, Me), it is possible to perform post-synthesis esterification or saponification reactions. Three new 2D pha...
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Full-text available
Obtaining transparent glasses made of functional coordination polymers (CPs) represents a tremendous opportunity for optical applications. In this context, the first transparent and red-emissive glasses of gold thiolate CPs have been obtained by simply applying mechanical pressure to amorphous powders of CPs. The three gold-based CP glasses are com...
Article
Shaping of functional materials is of tremendous importance for applications. Among the coordination polymers compounds, one of the challenges is to get fibers that can be self-standing and flexible while keeping their crystallinity and properties. Here the synthesis and characterizations of free-standing fibers of a Au(I)-based coordination polyme...
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Metal chalcogenide compounds have attracted interest as materials for next generation semiconductors, catalysts, and device architectures. Hybrid compounds containing both a metal chalcogenide architecture and a supporting organic lattice combine the interesting structural and electronic properties of the material class with a configurable hybrid c...
Article
We describe a simple bottom-up strategy to generate [Au(SPh)]n (SPh: thiophenolate) coordination polymer (CP) based thin films by employing an interfacial self-assembly on a nylon substrate. This method utilizes Au ion-doped nylon film as a precursor of [Au(SPh)]n CP, and a support substrate to control the kinetics of the reduction of Au ion from A...
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Design and synthesis of solid-state ion conductors have been challenging toward various electrochemistry applications. The ion conductivity of representative inorganic solids is often dominated by the lattice vibration in terahertz region. As a new family of ion conductors, metal-organic frameworks (MOFs) are promising due to their compositional di...
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The photoluminescence of gold thiolate clusters brings about many potential applications, but its origin is still elusive because of its complexity. A strategy in understanding the structure–properties relationship is to study closely related neutral gold thiolate coordination polymers (CPs). Here, a new CP is reported, [Au(m-SPhCO2H)]n. Its struct...
Article
Full-text available
Au25(SG)18 (SG - glutathione) clusters deposited on ZrO2 nanoparticles have been used as a catalyst for benzyl alcohol oxidation. Calcination was performed at different temperatures to study the ligand and particle size effect on the catalytic activity. In contrast to most gold nanoclusters which have to be completely defunctionalized for maximum c...
Article
The structures of two lamellar silver thiolate coordination polymers [Ag(p-SPhCO2H)]n (1) and [Ag(p-SPhCO2Me)]n (2) are described for the first time. Their inorganic part is composed of distorted Ag3S3 honeycomb networks separated by noninterpenetrated thiolate ligands. The main difference between the two compounds arises from dimeric hydrogen bond...
Article
Acoustic vibrations of small nanoparticles are still ruled by continuum mechanics laws down to diameters of a few nanometers. The elastic behavior at lower sizes (<1-2 nm), where nanoparticles become molecular clusters made by few tens to few atoms, is still little explored. The question remains to which extent the transition from small continuous-...
Article
A highly porous carbon was synthesised using a coordination complex as an unusual precursor. During controlled pyrolysis a trinuclear copper complex, [CuII3Cl4(H2L)2]CH3OH, undergoes phase changes with melt and expulsion of different gases to produce a unique morphology of copper-doped carbon which, upon acid treatment, produces highly porous grap...
Article
Two copper(II)-carboxylate disulfide coordination polymers [Cu2((O2CPhS)2)2(H2O)2]n(1, 2) and one copper(I)-thiolate coordination polymer [Cu(p-SPhCO2H)]n(3) have been synthesized using either the 4-mercaptobenzoic acid (HSPhCO2H) or the 4,4'-dithiodibenzoic acid ((SPhCO2H)2) as ligand. These three compounds were characterized by X-ray diffraction,...
Article
Neutral d¹⁰ coinage Metal Organic Chalcogenolates (MOCs) exist as oligomeric species and coordination polymers with the formula [M(ER)]n, where M = Cu(I), Ag(I), Au(I) and ER = ⁻SR, ⁻SeR, ⁻TeR. They have been known for a long time for their applications in pharmaceuticals, for their structural analogy to metaloproteins and as crucial intermediates...
Article
A copper thiolate coordination polymer, [Cu(p-SPhCO2Me)]n, is described and exhibits, under UV, luminescence thermochromism, associated to a unique well-separated triple emission. This compound is the most promising candidate as a...
Article
Full-text available
The structure of a new lamellar gold thiolate coordination polymer is described. [Au(+I)( p -SPhCO 2 H)] n exhibits unique bent S-Au-S angles due to the presence of both aurophilic and hydrogen interactions. More interestingly,...
Article
Metal Organic Frameworks (MOFs) have been recently proposed as promising electrocatalysts, yet the exact nature of the mechanisms in play has not been deeply adressed. By comparing the electrocatalytic activity of a MOF for the oxygen reduction reaction (ORR) and the corresponding molecular building units through electrochemical techniques, we here...
Article
The melting behavior of a coordination polymer (CP) crystal was utilized to achieve enhanced and optically switchable proton conductivity in the solid state. The strong acid molecules (triflic acid) were doped in one-dimensional (1D) CP, [Zn(HPO4 )(H2 PO4 )2 ](ImH2 )2 (ImH2 =monoprotonated imidazole) in the melt state, and overall enhancement in th...
Article
The melting behavior of a coordination polymer (CP) crystal was utilized to achieve enhanced and optically switchable proton conductivity in the solid state. The strong acid molecules (triflic acid) were doped in one-dimensional (1D) CP, [Zn(HPO4)(H2PO4)2](ImH2)2 (ImH2=monoprotonated imidazole) in the melt state, and overall enhancement in the prot...
Article
Two new 3D porphyrin-based metal organic frameworks were obtained by solvothermally reacting iron(iii) chloride, a free base (5,10,15,20-tetrakis[4-(2,3,4,5-tetrazolyl)phenyl]porphyrin) (H2TTPP) and either pyrazine or 1,4-diazabicyclo[2.2.2]octane (DABCO). Both MOFs displayed a 3-D open framework of the fry topology, where the inorganic building un...
Article
The first structure elucidation of a lamellar gold thiolate coordination polymer is described. [Au(p-SPhCO2Me)]n is obtained from the simultaneous esterification of mercaptobenzoic acid and reduction of the Au(iii) precursor. Despite the presence of aurophilic interactions, the intense phosphorescence (QY ∼ 70%) originates from intra-ligand and met...
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Full-text available
A gold(i)-thiophenolate coordination polymer, [Au(SPh)]n, has been synthesized by employing hydrothermal conditions at 120 [degree]C. This new synthesis led to isolate highly crystalline compound and to solve its structure from powder X-ray diffraction patterns. The compound forms double interpenetrated helical chains stabilized through C-H[small p...
Article
Au25(SPh-pNH2)17 clusters deposited on mesoporous silica SBA-15 (mean particle size 0.9 ± 0.2 nm) have been used as catalysts in the oxidation of benzyl alcohol. In the absence of radicals, fresh thiolate clusters are not active even in the presence of caesium carbonate. The activity strongly increases with calcination temperature and reaches a max...
Article
Full-text available
A new organo-soluble [60]fullerene hexaadduct bearing twelve thiocyanate functions has been synthesized and successfully used as a stabilizing/assembling agent to assemble homogeneous sub-3 nm gold nanoparticles into extended tridimensional networks.
Article
Research interest in ultra small gold thiolate clusters has been rising in recent years for the challenges they offer to bring together properties of nanoscience and well-defined materials from molecular chemistry. Here, a new atomically well-defined Au10 gold nanocluster surrounded by ten 4-aminothiophenolate ligands is reported. Its synthesis fol...
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New Au(25) nanoclusters stabilized by heterotopic 4-aminothiophenolate ligands (HSPhNH(2)) have been isolated with a yield of ∼70%. The nanoclusters formula determined by ESI-MS is Au(25)(SPhNH(2))(17), with the 18(th) position occupied by an amine or DMF molecules to close their electronic shell.
Article
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New Cu(II), Ni(II) and Co(II) multilayered systems consisting of alternating transition metal hydroxide and oligothiophenedicarboxylate layers have been elaborated by hydrothermal reaction. The insertion of dicarboxylate ligands comprising 1 to 4 thiophene rings between metal hydroxides and the structures and physical properties of 10 hybrid organi...
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Full-text available
We report processing of a thin film by chemical solution deposition of a microporous ZIF-8nanoparticle dispersion. By using the drain and capillary regimes involved in the dip-coating process, we tuned the thickness of the films from 40 nm to 1 μm and controlled the packing of the nanoparticles on the substrate. The high optical quality thin films...
Article
New hybrid organic/inorganic systems have been elaborated by insertion/grafting of thiophenecarboxylates into the layered transition metal hydroxides Cu2(OH)3(CH3CO2)·H2O and Co2(OH)3NO3. The Cu2(OH)3.28(TA)0.72·0.08H2O (1; TA-:  3-thiopheneacetate), Cu2(OH)3.04(TDC)0.48·1.84H2O (3; TDC2- :  2,5-thiophenedicarboxylate), Co2(OH)3.38(TA)0.62·1.52H2O...
Article
New hybrid organic/inorganic systems have been elaborated by insertion/grafting of thiophenecarboxylates into the layered transition metal hydroxides Cu2(OH)3(CH3CO2).H 2O and Co2(OH)3NO3. Cu 2(OH)3(TDC)0.5.2H2O (TDC 2-: 2,5-thiophenedicarboxylate) and Co2(OH) 3.5(TC)0.5.0.64H2O (TC-: 2-thiophenecarboxylate) compounds have been synthesized by anion...
Article
We report the synthesis and characterization of the tungsten carbonyl complexes (8, R = neopentyl; 10, R = benzyl), which contain a chelating ortho-diimine moiety. Their formation can be explained by a metal coordination-induced relocalisation of the π system of the precursor para-benzoquinonediimine ligand C6H2(NHR)2(=NR)2 (3, R = neopentyl; 9, R...
Article
Oligophenylenevinylene (OPV) tetracarboxylate luminescent ligand 5 has been synthesized and used for the design of a new Ni(II) layered organic−inorganic compound (8) obtained by the reaction of 5 with nickel(II) nitrate hexahydrate. The hybrid compound 8 has been characterized by powder X-ray diffraction and its magnetic and luminescent properties...