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Nanocomposite Made of an Oligo(p-phenylenevinylene)-Based Trihybrid Thixotropic Metallo(organo)gel Comprising Nanoscale Metal-Organic Particles, Carbon Nanohorns, and Silver Nanoparticles

Bhattacharjee, Subham and Samanta, Suman K and Moitra, Parikshit and Pramoda, K and Kumar, Ram and Bhattacharya, Santanu and Rao, CNR (2015) Nanocomposite Made of an Oligo(p-phenylenevinylene)-Based Trihybrid Thixotropic Metallo(organo)gel Comprising Nanoscale Metal-Organic Particles, Carbon Nanohorns, and Silver Nanoparticles. In: CHEMISTRY-A EUROPEAN JOURNAL, 21 (14). pp. 5467-5476.

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Official URL: http://dx.doi.org/10.1002/chem.201405522

Abstract

A silver ion (Ag+)-triggered thixotropic metallo(organo)gel of p-pyridyl-appended oligo(p-phenylenevinylene) derivatives (OPVs) is reported for the first time. Solubilization of single-walled carbon nanohorns (SWCNHs) in solutions of the pure OPVs as well as in the metallogels mediated by pi-pi interactions has also been achieved. In situ fabrication of silver nanoparticles (AgNPs) in the SWCNH-doped dihybrid gel leads to the formation of a trihybrid metallogel. The mechanical strength of the metallogels could be increased step- wise in the order: freshly prepared gel <dihybrid gel < trihybrid gel. Microscopic studies of the trihybrid gel indicate the formation of three distinct morphologies, that is, nanoscale metal organic particles (NMOPs), flowerlike aggregates of SWCNHs and AgNPs, and also their integration with each other. Detailed studies suggest lamellar organizations of the linear metal ligand complexes in the NMOPs, which upon association create a three-dimensional network that eventually immobilizes the solvent molecules.

Item Type: Journal Article
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Additional Information: Copy right for this article belongs to the WILEY-V C H VERLAG GMBH, BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
Keywords: carbon nanaborns; liquid crystals; metallogels; organic-inorganic hybrid composites; thixotropy
Department/Centre: Division of Chemical Sciences > Organic Chemistry
Date Deposited: 13 May 2015 07:19
Last Modified: 13 May 2015 07:19
URI: http://eprints.iisc.ernet.in/id/eprint/51524

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