Research Highlights
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Synthesis and characterization of gold nanoparticle -cored dendrimers stabilized by metal-carbon bondsSynthesis of gold nanoparticle-cored dendrimers (NCDs), where the dendrons are attached to the gold core through gold-carbon bonds involved the simultaneous reduction of HAuCl4 and a Fréchet-type dendron with a diazonium group at the focal point, in an organic solvent such as toluene. These materials possessed a nanometer-sized gold core surrounded by a shell of [...]
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Recognition of 5’-GMP through a supramolecular assemblyOrganized assembly of molecules through non-covalent interactions is a powerful tool for generating defined molecular architectures. Although such assemblies have been effectively utilized in host–guest chemistry, metallocyclophanes have rarely been utilized as receptors for nucleotides in aqueous solution. Of all the nucleotides, the recognition of guanosine 5’-monophosphate (5’-GMP) is vital because it acts as an [...]
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Nano ZnO for functional applicationsPreparation of nano ZnO for high energy field varistors was carried out. Studies were also initiated to fabricate ZnO coatings and dispersions for functional materials. Three attempts namely (i) preparation of ZnO-biopolymer nanocomposites for functional textiles and polymer foams (ii) ZnO-flyash composites for luminescent glaze layers and (iii) vertical/aligned growth of ZnO nanostructures on seeded [...]
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Use of complementary hydrogen -bonding interaction in controlling gelation, morphology and properties of molecular self-assembliesOne of the challenges in the self-assembly of π-conjugated molecules and functional dyes is the control of the morphology and properties of the self-assemblies. An interesting aspect of these studies is mimicking the dynamic self-organization processes involving ring-shaped and extended helical nanostructures triggered by chemical stimuli. Recently, it was shown that oligo(p-phenylenevinylene) functionalized on [...]
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Highly efficient green emitting materialsA novel class of efficient antenna complexes of Tb3+ based on the use of 3-phenyl-4-acyl-5-isoxazolone ligands has been synthesized and evaluated their photophysical properties. The new heterocyclic -diketonate complexes of Tb3+ exhibit high green luminescence efficiency in solid state with high quantum yields in the range 59 -72 %. The quantum yield of the designed [...]
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Development of reverse flow natural convection driers and cottage level processing for rural developmentSubsequent to the successful and wide spread use of RRL-T NC Driers for the drying of various rural agricultural products such as coconuts (for making copra), rubber sheets, spices, various fruits etc., a RSWNET project was sanctioned by CSIR for expanding and popularising the use of such driers for more materials such as ground nuts, [...]