期刊
JOURNAL OF PHYSICAL CHEMISTRY B
卷 117, 期 44, 页码 13936-13945出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp4080509
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资金
- RFBR [mol-a-12-03-31114, a-13-03-00648, ofi-m-13-03-12456, mol-a-14-02-31882]
A novel mechanism of photo-orientation of azobenzene-containing liquid-crystalline materials is proposed. This mechanism is based on the notion of photochemically induced domain rearrangement driven by destabilization of liquid-crystalline phase in light absorbing domains due to photochemical formation of non-mesogenic cis-azobenzene moieties. The experimental evidence of photoinduced movement of a domain boundary is presented, and the velocity of this movement is measured. A mathematical model for photo-orientation of a polydomain azobenzene-containing material is formulated. The values of model parameters for a liquid-crystalline azopolymer have been measured in separate experiments. Theoretical predictions demonstrate quantitative agreement with the experimental observations.
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