Alejandro López-Moreno

Alejandro López-Moreno
Madrid Institute for Advanced Studies | IMDEA · IMDEA-Nanoscience

PhD
IMDEA Nanoscience

About

37
Publications
5,019
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744
Citations
Additional affiliations
July 2019 - January 2021
CiQUS - Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares
Position
  • PostDoc Position
Description
  • Juan de la Cierva- Formación
July 2017 - July 2019
Kyoto University
Position
  • PostDoc Position
Description
  • JSPS Fellowship
October 2012 - October 2016
Madrid Institute for Advanced Studies
Position
  • PhD Student

Publications

Publications (37)
Preprint
The grinding of chemical reagents enables mixing, promotes molecular collisions, and provides the thermal energy required for chemical reactions, while reducing the need for solvent (often to none) and significantly speeding up reactions. This has made mechanochemistry a powerful alternative to traditional solution chemistry. Here, we show that mec...
Article
Full-text available
Single‐walled carbon nanotubes (SWNTs) present extraordinary mechanical properties, with Youngs’ modulus>1 TPa and tensile strength>50 GPa; this makes them ideal candidates as fillers for the reinforcement of polymers. However, the performance of SWNTs in this field has fallen behind expectations. This is due to a combination of imperfect individua...
Article
Full-text available
Mechanobactericidal nanomaterials, such as low‐dimensional nanoparticles in suspension or high‐aspect‐ratio nanofabricated topographies, rely on their mechanical or physical interactions with bacteria and are promising antimicrobial strategies that overcome bacterial resistance to classical antibiotics. However, the underlying killing mechanisms ar...
Article
Full-text available
The development of systems that can be switched between states with different thermal conductivities is one of the current challenges in materials science. Despite their enormous diversity and chemical richness, molecular materials have been only scarcely explored in this regard. Here, we report a reversible, light-triggered thermal conductivity sw...
Article
Single-walled carbon nanotubes (SWNTs) present one of the most interesting collections of properties among nanomaterials. Some sort of chemical modification of SWNTs is often used as a strategy to make the most of their intrinsic properties. In the last few years, the mechanical bond has been added to the chemistry toolbox for SWNT modification. In...
Article
Full-text available
Substitutional N-doping of single-walled carbon nanotubes is a common strategy to enhance their electrocatalytic properties in the oxygen-reduction reaction (ORR). Here, we explore the encapsulation of SWNTs within N-rich macrocycles as an alternative strategy to display electroactive sites on the surface of SWNTs. We design and synthesize four typ...
Article
Full-text available
Mechanically interlocked derivatives of carbon nanotubes (MINTs) are interesting nanotube products since they show high stability without altering the carbon nanotube structure. So far, MINTs have been synthesized using ring‐closing metathesis, disulfide exchange reaction, H‐bonding or direct threading with macrocycles. Here, we describe the encaps...
Article
Mechanically interlocked derivatives of carbon nanotubes (MINTs) are interesting nanotube products since they show high stability but without altering the carbon nanotube structure. So far, MINTs have been synthesized using ring‐closing metathesis, disulfide exchange reaction, H‐bonding or direct threading with macrocycles. Here, we describe the en...
Chapter
Bistability is undoubtedly one of the most desired properties when designing new technological materials. Molecular magnets, including single-molecule and single-ion magnets, exhibit slow relaxation of their magnetization in addition to magnetic bistability, whereas spin crossover materials are just bistable switches that can be either in low-spin...
Article
Full-text available
Dispersing nanodiamond (ND) in an organic solvent has been realized by surface functionalization with hydrophobic polymers. The following two types of “grafting from” processes are applied to the ND surface coating; 1) ring opening polymerization of 1,2‐epoxyhexane giving ND functionalized with poly(1,2‐hexylene glycol) (ND‐PHG) and 2) ring opening...
Article
Since nanodiamonds (NDs) have been attracting growing interest in the field of nanomedicine, aqueously dispersed NDs have been numerously prepared by surface functionalization with hydrophilic groups. In contrast, hydrophobic NDs dispersible in organic solvents have been elusive in spite of the various potential applications such as tribology, lubr...
Article
We introduce oligo-(1,6-pyrene terephthalamide, oPyrTA) as an oligoamide model for Kevlar®. Through comparison with an oligo-(p-phenylene terephthalamide, oPTA) of similar molecular weight, this work shows that the incorporation of polycyclic aromatic pyrene moieties improves drastically the mechanical properties of the structure, increasing elasti...
Article
Strong interaction between porphyrin and nanocarbons including carbon nanotubes (CNTs) has been utilized to form stable complexes between them. We have applied the stable complex of CNTs with V- and U-shaped porphyrins and pyrenes, designated as nanotweezers and nanocalipers respectively, to separation of CNTs through their extraction to liquid pha...
Preprint
We introduce poly(1,6-pyrene terephthalamide) polymer (PPyrTA) as an aromatic polyamide analogue of poly(p-phenylene terephthalamide) (PPTA), also known as Kevlar®. This work shows that the incorporation of polycyclic aromatic pyrene moieties improves drastically the mechanical properties of the polymeric structure, increasing elastic nanoindentati...
Article
A two-dimensional imine-linked Covalent Organic Framework bearing pyrene has been prepared and exfoliated in water as nanosheets to produce a stable water colloid. As a proof-of-concept, this COF colloid has...
Article
Schiff-condensation reactions carried out between 1,6-diaminopyrene (DAP) and the tritopical 1,3,5 benzenetricarbaldehyde (BTCA) or 1,3,5-triformilfloroglucionol (TP) ligands give rise to the formation of two-dimensional imine-based covalent-organic frameworks (COFs), named IMDEA-COF-1 and -2, respectively. These materials show dramatic layer-packi...
Article
Full-text available
One of the most attractive applications of carbon nanomaterials is as catalysts, due to their extreme surface-to-volume ratio. The substitution of C with heteroatoms (typically B and N as p- and n-dopants) has been explored to enhance their catalytic activity. Here we show that encapsulation within weakly doping macrocycles can be used to modify th...
Article
Full-text available
Correction for ‘Synthesis of flexible nanotweezers with various metals and their application in carbon nanotube extraction’ by Yuya Miyake et al. , New J. Chem. , 2018, DOI: 10.1039/c8nj00147b.
Article
The bisporphyrin-based flexible nanotweezers with various metal were synthesized and applied to the extraction of single-walled carbon nanotubes. Homo- and hetero-metallic bisporphyrins including Co ²⁺ were found to afford higher SWNT-extraction...
Article
We combine experiment, density functional theory (DFT) and molecular dynamics (MD) simulations for the quantitative analyses of the noncovalent interaction between single-walled carbon nanotubes (SWNTs), as hosts, and a set of pyrene derivatives with different electronic properties and surface area, as guests. The experiments and calculations were...
Preprint
In this work we study the reinforcement of polymers by mechanically interlocked derivatives of single-walled carbon nanotubes (SWNTs). We compare the mechanical properties of fibers made of polymers and of composites with pristine single-walled carbon nanotubes (SWNTs), mechanically interlocked derivatives of SWNTs (MINTs) and the corresponding sup...
Article
In this work we study the reinforcement of polymers by mechanically interlocked derivatives of single-walled carbon nanotubes (SWNTs). We compare the mechanical properties of fibers made of polymers and of composites with pristine single-walled carbon nanotubes (SWNTs), mechanically interlocked derivatives of SWNTs (MINTs) and the corresponding sup...
Article
We report on the large-scale synthesis of highly oriented ultrathin MoO3 layers using a simple and low-cost atmospheric pressure by van der Waals epitaxy growth on muscovite mica substrates. By this method we are able to synthetize high quality centimeter-scale MoO3 crystals with thicknesses ranging from 1.4 nm (two layers) up to a few nanometers....
Article
Full-text available
Single-walled carbon nanotubes (SWNTs) are one of the most promising nanomaterials and their supramolecular chemistry has attracted a lot of attention. However, despite well over a decade of research, there is no standard method for the quantification of their noncovalent chemistry in solution/ suspension. Here, we describe a simple procedure for t...
Article
The synthesis of rotaxane-type species composed of pyrene macrocycles and SWNTs as linear components is described. Pyrene-SWNT interactions help template the ring-closing metathesis of U-shape precursors around the nanotubes.
Article
We present a mild catalytic method to oxidize PAHs and, in particular, pyrene. The pyrenediones are much better electron acceptors than benzoquinone in the gas phase and present similar accepting abilities in solution.
Article
Full-text available
The oxidation of terpene olefins with hydrogen peroxide in the presence of the non-hemo catalyst 5a afforded mixtures of epoxides whose composition was dependent upon the oxidation protocol used in each case. With terpenoid enones, the mixtures obtained evolved from clean epoxidation of α-ionone 23 to the clean allylic oxidation of damascone 28 due...
Article
In this paper we describe a new environmentally friendly method to promote the oxidation of steroids. The chemo- and stereoselective aspects of the oxidation of conjugated enones, dienones, further unsaturated enones, estrone, and cholestane acetates were under study.The great facial stereoselectivity of the method has been shown on substrates 12,...

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