Abstract
The photoresponsive behavior of an amphiphilic diblock liquid-crystalline (LC) copolymer (P40A37) was studied in both toluene solution and spin-coated film. The LC copolymer in a film state showed slower response and relaxation than that in the solution. Significant H-aggregation in the film led to a blue shift by 16 nm at the maximum absorption. The photochemical phase transition was observed with a polarizing optical microscope (POM) upon exposure to 366-nm light. The photoinduced isotropic state remained stable at room temperature, indicating the potential application for 2-D and 3-D storage.
Original language | English |
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Pages (from-to) | 191-199 |
Number of pages | 9 |
Journal | Molecular Crystals and Liquid Crystals |
Volume | 443 |
DOIs | |
Publication status | Published - 2005 Dec 1 |
Keywords
- Amphiphilic liquid-crystalline diblock copolymer
- Azobenzene
- Liquid-crystalline polymer
- Photochemical phase transition
- Photosensitive polymers
ASJC Scopus subject areas
- Chemistry(all)
- Materials Science(all)
- Condensed Matter Physics