Ángel Pérez del Pino

Bio: Ángel Pérez del Pino is an academic researcher from Institute of Cost and Management Accountants of Bangladesh. The author has contributed to research in topics: Graphene & Carbon nanotube. The author has an hindex of 20, co-authored 47 publications receiving 1210 citations. Previous affiliations of Ángel Pérez del Pino include Autonomous University of Barcelona & Spanish National Research Council.

A review on synthesis of graphene, h-BN and MoS 2 for energy storage applications: Recent progress and perspectives

Abstract: The significance of graphene and its two-dimensional (2D) analogous inorganic layered materials especially as hexagonal boron nitride (h-BN) and molybdenum disulphide (MoS2) for “clean energy” applications became apparent over the last few years due to their extraordinary properties. In this review article we study the current progress and selected challenges in the syntheses of graphene, h-BN and MoS2 including energy storage applications as supercapacitors and batteries. Various substrates/catalysts (metals/insulator/semiconducting) have been used to obtain graphene, h-BN and MoS2 using different kinds of precursors. The most widespread methods for synthesis of graphene, h-BN and MoS2 layers are chemical vapor deposition (CVD), plasma-enhanced CVD, hydro/solvothermal methods, liquid phase exfoliation, physical methods etc. Current research has shown that graphene, h-BN and MoS2 layered materials modified with metal oxide can have an insightful influence on the performance of energy storage devices as supercapacitors and batteries. This review article also contains the discussion on the opportunities and perspectives of these materials (graphene, h-BN and MoS2) in the energy storage fields. We expect that this written review article including recent research on energy storage will help in generating new insights for further development and practical applications of graphene, h-BN and MoS2 layers based materials.

Shaping supramolecular nanofibers with nanoparticles forming complementary hydrogen bonds.

Abstract: Functionalized gold nanoparticles with complementary H-bonding groups can control the secondary structure of xerogel fibers formed by a molecular conductor thanks to their incorporation into the nanowires, which show metal-like conductivity once doped without the need for annealing. The picture shows a photograph of the xerogel, TEM images of Au particles in the gel and a single fiber, and an AFM image revealing the texture of the gel.

Solvent effect on the morphology and function of novel gel-derived molecular materials

Abstract: The gelation of two distinct hydrocarbon solvents by a new π-functional molecule, followed by doping and measurement of conducting properties of the derived xerogel, reveals an important effect of the main gel component on the shape and organisation of the supramolecular fibres formed by the aromatic moieties. The gelator—a tetrathiafulvalene (TTF) derivative with two hydrophobic chains incorporating amide groups near the aromatic group—was also cast onto hydrophobic and hydrophilic surfaces from homogeneous solution and shows the dramatic influence of the concentration and surface on the aggregate formation, as revealed by atomic force microscopy (AFM). This observation underlines the advantage of using the gel route to prepare films of these materials. The doped xerogels show the effect of the solvent at the microscopic and macroscopic levels, as revealed by current sensing AFM and bulk four point conductivity measurements. The real polymorphism of the xerogels was confirmed by electron paramagnetic resonance (EPR) spectroscopy. In both materials, prepared from gels in (S)-limonene and n-hexane, and in contrast to a related compound with one hydrogen bonding group, the double hydrogen bond motif leads to materials which do not show structural phase transitions when heated. This feature shows the potential benefit of incorporating several hydrogen bonding groups on the phase stability of gel derived materials; to stabilise the metastable states to produce materials with different properties from a single compound by processing in different solvents.

High-tech applications of self-assembling supramolecular nanostructured gel-phase materials: from regenerative medicine to electronic devices.

Abstract: It is likely that nanofabrication will underpin many technologies in the 21st century. Synthetic chemistry is a powerful approach to generate molecular structures that are capable of assembling into functional nanoscale architectures. There has been intense interest in self-assembling low-molecular-weight gelators, which has led to a general understanding of gelation based on the self-assembly of molecular-scale building blocks in terms of non-covalent interactions and packing parameters. The gelator molecules generate hierarchical, supramolecular structures that are macroscopically expressed in gel formation. Molecular modification can therefore control nanoscale assembly, a process that ultimately endows specific material function. The combination of supramolecular chemistry, materials science, and biomedicine allows application-based materials to be developed. Regenerative medicine and tissue engineering using molecular gels as nanostructured scaffolds for the regrowth of nerve cells has been demonstrated in vivo, and the prospect of using self-assembled fibers as one-dimensional conductors in gel materials has captured much interest in the field of nanoelectronics.

Organogels as scaffolds for excitation energy transfer and light harvesting

Abstract: The elegance and efficiency by which Nature harvests solar energy has been a source of inspiration for chemists to mimic such process with synthetic molecular and supramolecular systems. The insights gained over the years from these studies have contributed immensely to the development of advanced materials useful for organic based electronic and photonic devices. Energy transfer, being a key process in many of these devices, has been extensively studied in recent years. A major requirement for efficient energy transfer process is the proper arrangement of donors and acceptors in a few nanometers in length scale. A practical approach to this is the controlled self-assembly and gelation of chromophore based molecular systems. The present tutorial review describes the recent developments in the design of chromophore based organogels and their use as supramolecular scaffolds for excitation energy transfer studies.