| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 27103 | Journal of Photochemistry and Photobiology A: Chemistry | 2010 | 4 Pages |
Abstract
The steady-state and transient photophysics of a series of newly synthesized phenothiazine-based conjugated polymers and copolymers with thiophene and furan moieties in solvents were investigated. Positive solvatochromism in emission spectra was observed in polar solvents due to excited-state intramolecular charge-transfer. The picosecond time-resolved spectra using streak camera revealed fast chain twisting motion at ∼10 ps, verified by solvent viscosity dependency. A non-radiative de-activate pathway is assigned to the non-planar conformation at excited state. This reveals a possible way for intramolecular energy loss in new polymer design for applications.
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Bioengineering
Authors
Kang Meng, Yingliang Liu, Wenke Feng, Qi Zeng, Xiangjie Zhao, Shufeng Wang, Qihuang Gong,