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- W4383313705 abstract "The donor-acceptor type π-conjugated polymers having heterole units were prepared by the reaction of a regioregular organometallic polymer having both reactive titanacyclopentadiene and electron-donor thiophene-2,5-diyl units in the main chain with electrophiles such as diphenyltin dichloride, dichlorophenylphosphine, and diiodophenylarsine. For example, a polymer having electron-accepting phosphole unit was obtained in 54% yield whose number-average molecular weight (Mn) and molecular weight distribution (Mw/Mn) were estimated as 3,000 and 1.9, respectively. The obtained polymer exhibits a high highest occupied molecular orbital (HOMO) and low lowest unoccupied molecular orbital (LUMO) energy levels (−5.13 eV and −3.25 eV, respectively) due to the electron-donating thiophene and electron-accepting phosphole units. Reflecting upon the alternating structure of thiophene and phosphole, the polymer exhibits a band gap energy level (Eg) of 1.78 eV which is narrower than that of a derivative of poly(thiophene) (Eg = 2.25 eV)." @default.
- W4383313705 created "2023-07-07" @default.
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- W4383313705 date "2023-07-06" @default.
- W4383313705 modified "2023-09-27" @default.
- W4383313705 title "Parallel synthesis of donor-acceptor π-conjugated polymers by post-element transformation of organotitanium polymer" @default.
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- W4383313705 doi "https://doi.org/10.1080/15685551.2023.2233228" @default.
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