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Synthesis of bimetallic conducting nano-hybrid composite Au-Pt@PEDOT exhibiting Fluorescence

Abstract

Inorganic- organic conducting nano hybrids are the new class of material. Au-Pt@PEDOT was explored further due to its attractive features like ultrafine size, low toxicity and fluorescent properties in the visible blue region. In the present study Au-Pt@PEDOT with photoluminescence (PL) quantum efficiency 51% are synthesized in-situ in one step in water via unpretentious blending technique. The formation of core-shell nanocomposite was evidently supported with transmission electron microscopy (TEM), Scanning electron microscopy (SEM) and X-RAY diffraction pattern (XRD) and with FT-IR. The hole-electron transport mechanism with in the nanocomposite is systematically investigated with PL, time resolved florescence spectroscopy, electrochemical impedance spectroscopy (EIS), and with cyclic voltammetry. The average PL life time decay of nanocomposite was found to be at 2.75 ns. The conducting shell of Poly(3, 4-ethylenedioxythiophene) PEDOT through its π- π interactions provide well shielding to the core shell nanoparticles as a result the intramolecular vibration and rotation of are greatly suppressed, which reduce the non-radiative relaxation of excited states and, as a result, predominantly increase the photoluminescence quantum efficiency and decrease the PL life time decay of nano-composite.

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Publication details

The article was received on 06 Nov 2017, accepted on 05 Jan 2018 and first published on 08 Jan 2018


Article type: Paper
DOI: 10.1039/C7NJ04298A
Citation: New J. Chem., 2018, Accepted Manuscript
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    Synthesis of bimetallic conducting nano-hybrid composite Au-Pt@PEDOT exhibiting Fluorescence

    S. Khan and A. K. Narula, New J. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C7NJ04298A

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