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Benzotrifluoromethyl group‐substituted poly(para‐phenylenevinylene): Effect on solubility, optical, and electronic properties
Author(s) -
Chatterjee Shyambo,
Kumar Sen Suman,
Maji Samarendra,
Dasgupta Barnali,
Banerji Pallab,
Banerjee Susanta
Publication year - 2010
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.31528
Subject(s) - dichloromethane , polymer , materials science , tetrahydrofuran , solubility , polymer chemistry , homo/lumo , polymerization , toluene , chloroform , photochemistry , chemistry , organic chemistry , solvent , molecule , composite material
A new organosoluble benzotrifluoromethyl group containing poly( p ‐phenylenevinylene) (BTFM‐PPV) has been synthesized via Gilch polymerization. The polymer is soluble in common organic solvents such as tetrahydrofuran, chloroform, dichloromethane, toluene, and xylene. BTFM‐PPV exhibited fluorescence emission peak with a very high blue shift at 474 nm with an excitation wavelength at 420 nm compared with many other PPV derivatives reported earlier. Incorporation of fluorated bezotrifluoromethyl pendent group in the PPV backbone lowers the HOMO and LUMO energy levels of BTFM‐PPV (2.48 eV) which retarded the hole injection and increase the electron injection in the device. The current–voltage (I–V) characteristic of the polymer was measured by fabricating the polymer as ITO/BTFM‐PPV/Al diode. The device performance was markedly improved by incorporation of 4‐fluoro‐3trifluoromethylphenyl units into the polymer main chain. The turn on voltage of the device observed from the I–V measurements was 7 V. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010