Materials Literature
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Tunable and durable photochromic materials are a rapidly expanding area of interest, with applications ranging from biomedical devices to industrial-fields. Here we examine electrospun poly (methacrylic acid) PMAA nanofibers covalently modified with the highly photochromic molecule, spiropyran (SP) or a derivate SP wh…
The comprehensive understanding of the composition, behaviour and reactivity of a catalyst used inside industrial plants is an extremely hard task that is rarely achieved. It requires the use of different spectroscopic techniques, applied under in situ or in operando conditions, and combined with the investigation of…
Self-assembling gelling peptides are increasingly being investigated as defined biomatrices for biomedical applications. Using an enzymatic reaction to convert a precursor into a hydrogelator one can control or modulate functions and responses of a hydrogel, depending on its preparation conditions. This work details t…
Tetrahedral chalcogenide clusters, with their well-defined molecular structures and interesting properties, are attractive building blocks for hybrid materials, in which porosity may be integrated with electronic or optical properties. Linkage of tetrahedral clusters often occurs through bridging chalcogenolate ligand…
Active packaging is one of the responses to the recent food-borne microbial outbreaks and to the consumer's demand for high quality food and for packaging that is more advanced and creative than what is currently offered. Moreover, with the recent increase in ecological awareness associated with the dramatic decrease…
The research paper and its impact on the electrochemistry corrosion community are discussed (J. R. Galvele, J. Electrochem. Soc. , 123 , 464 (1976); doi: 10.1149/1.2132857). Galvele wrote that all the observations reported so far in the literature on the pitting potential can be explained by transport phenomena. Proce…
Multilayer samples of the type (YSZ|Sc2O3) × n with layer thicknesses between 8 nm (n=100) and 250 nm (n=5) were prepared on (0001) sapphire substrates by pulsed laser deposition (PLD). The samples were characterised using X-ray diffraction (XRD), scanning electron microscopy (HRSEM) and transmission electron microsco…
Scanning transmission X-ray microscopy was used to chemically image RuO(2) nano-layer coated multi-walled carbon nanotubes (RuO(2)/MWCNT) with a spatial resolution of 30 nm. X-Ray absorption near-edge structure spectroscopy of individual RuO(2)/MWCNTs has been compared with that of MWCNTs and RuO(2) which confirms tha…
Nano particles of Co(0.5-x)NixZn0.5Fe2O4 (x = 0 to 0.3) is prepared by co-precipitation method. The X-ray diffraction analysis indicates the formation of single phase ferrite particle in nano size. The lattice constant for Co0.5Zn0.5Fe2O4 is found to be 8.38 Å, but the lattice constant decreases when cobalt is re…
The synthesis and fluorescence properties of a naphthalenediimide ditosylate are presented. The fluorescence is highly solvent and morphology dependent with a dramatic change in fluorescence output occurring following melting from a crystalline form. This observation is attributed to thermal disruption of the crystal…
This paper reports the assembly and pH-triggered dissolution of a novel type of colloidosome microcapsules formed by self-assembly of responsive particles made from enteric coating polymers onto double emulsion templates; measurements of the capsules' permeability are complemented by evidence for fast and complete cap…
High quality graphenes were prepared from low-cost expandable graphite via a facile hydrazine hydrate or concentrated ammonia-assisted quenching strategy.
Ethylene carbonate molecules in electrolyte solutions can bind tightly with PF(6)(-) anions, and prevent the intercalation of these anions into the interlayer spaces of graphite positive electrodes in activated carbon/graphite capacitors.
[Ir(ppy)(2)(RCOCR'COR)] and [Pt(ppy)(RCOCHCOR)] (ppy = cyclometallated 2-phenylpyridine; R = Me, Ph; R' = H, 2,4-dinitrophenyl) complexes show an unexpected large second order non linear optical response, as evidenced by the EFISH technique, which can be attributed by an SOS-TDDFT investigation mainly to intraligand c…
Branched polyglycerols (PGs) are a versatile class of functionalisable, hydrophilic, hydroxylated polyethers with ideal properties for numerous applications. Historically, synthetic limitations have restricted the study of such materials to globular hyperbranched polymers (<10 nm) or macroscale biocompatible hydrogels…
The purpose of this critical review is twofold: first, to review organic "small molecule" crystalline materials in terms of structure and function; and second, to consider if and how such materials might eventually enter the realm of device applicability. This area, one of the most interdisciplinary fields of research…
A series of N₂O₂ tripodal tetradentate ligands derived from di-/tetra-tert-butyl substituted 2-[bis(2-hydroxybenzyl)aminomethyl]X (X = pyridine and benzimidazole) (H₂L(n) (n = 1-4)) and 8-[bis(3,5-di-tert-butyl-2-hydroxybenzyl)]aminoquinoline (H₂L⁵) were synthesised through a 4-step reaction scheme involving sequentia…
Carbon nanotubes are light, stiff and electroactive materials particularly promising in the field of actuating materials. Indeed, carbon nanotubes can expand and contract upon charge injection and be used for the development of electromechanical actuators. Carbon nanotubes can also be included in polymers to improve t…
The ability of a carboxylic acid functionalized spiropyran, SP, to act as a reversible and selective receptor for metal ions has been systematically examined. A series of spectroscopic measurements, combined with single-crystal X-ray diffraction have been employed in order to determine metal-ion sensitivity and select…
In this critical review, we discuss the history and development of polymer devices wherein manipulation of the electronic conductivity by electrochemical redox processes in a conjugated polymer is used to form new functions. The devices employed are an electrochemical transistor, an electrolyte-gated field-effect tran…