Journal
JOURNAL OF FLUORESCENCE
Volume 26, Issue 3, Pages 1045-1052Publisher
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10895-016-1792-5
Keywords
Thiadiazolo[3,4-c]pyridine]; Benzodithiophene; Photophysical studies; Stille reaction; Organic field-effect transistors
Funding
- Samsung Research Funding Center of Samsung Electronics [SRFC-MA1401-05]
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A novel thiadiazolo[3,4-c]pyridine] based donor-acceptor (D-A) copolymer, poly[4,8-bis(triisopropylsilylethynyl)benzo[1,2-b:4,5-b']dithiophene-2,6-diyl-alt-[4,7-bis(4-(2-ethylhexyl)thiophen-2-yl)-[1,2,5]thiadiazolo[3,4-c]pyridine] (PTBDTPT), containing triisopropylsilylethynyl(TIPS)benzo[1,2-b:4,5-b']dithiophene as a donor is synthesized by Stille polymerization reaction. All the important photo physical prerequisites for organic field-effect transistor (OFET) application such as strong and broad optical absorption, thermal stability, and compatible HOMO-LUMO levels can be accomplished and combined on one macromolecule. Optical band gap of the polymer was found to be 1.61 eV as calculated from its film onset absorption edge. The hole mobility of bottom gate OFET using the synthesized polymer as an active channel is found to be 1.92 X 10(-2) cm V-1 s(-1) with the On/Off ratio of 25. The photophysical study suggests that PTBDTPT is promising candidate for future large area organic electronic applications.
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