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A Novel Family of Phosphole-Thiophene Oligomers for Optoelectronic Applications

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posted on 10.11.2008, 00:00 by Ngoc Hoa Tran Huy, Bruno Donnadieu, François Mathey, Astrid Muller, Kathryn Colby, Christopher J. Bardeen
A 2-terthienylphospholide can be prepared from a 1-terthienylphosphole by reaction with tBuOK in diglyme at 150 °C. This phospholide is then transformed into the corresponding 1-methyl-2-terthienylphosphole-borane. This borane complex fluoresces at 510 nm in CH2Cl2 with a quantum yield of 0.17. The excited-state displays a significant charge transfer between the terthienyl substituent and the phosphole ring as shown by the shift of the emission to lower energies upon increasing the polarity of the solvent.