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Title: | New diphenylamine-based donor–acceptor-type conjugated polymers as potential photonic materials |
Authors: | Vishnumurthy, K.A. Sunitha, M.S. Philip, Reji Adhikari, A.V. |
Keywords: | Thiophene Cyanopyridine Diphenylamine Fluorescence |
Issue Date: | Dec-2011 |
Publisher: | Elsevier Limited. |
Citation: | Reactive and Functional Polymers, 2011, Vol.71, p1119 |
Abstract: | A new series of donor-acceptor-type conjugated polymers (P1 and P2) carrying a diphenyl amine moiety were synthesized via Wittig condensation technique. The polymers structures were well established by FT-IR,.sup.1H NMR, elemental analysis and gel permeation chromatographic techniques. They exhibited good thermal stability with an onset decomposition temperature of approximately 325[degrees]C under nitrogen atmosphere. The optical and electrochemical properties of the polymers were studied by UV-vis, fluorescence emission spectroscopy and cyclic voltammetry. They exhibited good fluorescence in dilute solutions and showed solvatochromic behavior in various polar solvents. The electrochemical studies revealed that the polymers possess low-lying LUMO energy levels that ranging from -3.47 to -3.73eV and high-lying HOMO energy levels that ranging from -5.57 to -5.81eV. The thirdorder nonlinear optical properties of the polymers were investigated using the Z-scan technique. The effective two-photon absorption (TPA) coefficients ([beta]) of the polymers were found to be 0.645x10.sup.-10 and 0.212x10.sup.-10 m/W |
Description: | Restricted Access. |
URI: | http://hdl.handle.net/2289/4364 |
ISSN: | 1381-5148 |
Alternative Location: | http://dx.doi.org/10.1016/j.reactfunctpolym.2011.08.011 |
Copyright: | 2011 Elsevier Ltd. |
Appears in Collections: | Research Papers (LAMP) |
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2011_Reactive and Functional Materials_V71_p1119.pdf Restricted Access | Restricted Access | 1.01 MB | Adobe PDF | View/Open Request a copy |
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