| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7673061 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2014 | 5 Pages |
Abstract
A new series of dumbbell-shaped bis-carbazoles and bis-phenothiazines chromophores (1, 2, 3 and 4) constructed with styrene or biphenylethyne as the Ï-bridge have been synthesized and characterized. Experimental results revealed that extending conjugated chain and introducing donors have substantial effect on their photophysical properties. Compared with extending conjugated chain, enhancing electron-donating ability play a major role in enlarging two-photon absorption cross-sections (Ï). Moreover, those four chromophores can be used as effectively organic two-photon photopolymerization initiators.
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Authors
Fuying Hao, Zhaodi Liu, Mingliang Zhang, Jie Liu, Shengyi Zhang, Jieying Wu, Hongping Zhou, YuPeng Tian,