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Two novel conjugated polymers consisting of alternating thieno[3,4-b]thiophene and either carbazole (PCTT1) or carbazole with two thiophene spacers (PCTT2) were synthesized. PCTT1 (Mn 44,000) showed a bandgap of 2.14 eV but a significantly deep highest occupied molecular orbital level of -5.52 eV. PCTT1-based photovoltaic devices showed promising power conversion efficiency of 2.53% under AM 1...
Alternating polyols of oxymethylene and oxyalkylene were synthesized and used as precursors for thermoplastic poly(ether-ester) elastomers (TPEs). The polyols were synthesized by reacting diols having different methylene units with dichloromethane in the presence of a phase transfer catalyst. The number of methylene units in the alkylene oxides was varied from 3 to 6. TPEs were prepared using the...
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