俞燕蕾
博士 教授 博士生导师
复旦大学 材料科学系
光致形变液晶高分子,高分子自组装材料,光响应智能界面材料
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- 姓名:俞燕蕾
- 目前身份:在职研究人员
- 担任导师情况:博士生导师
- 学位:博士
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学术头衔:
博士生导师, 教育部“新世纪优秀人才支持计划”入选者, 国家杰出青年科学基金获得者
- 职称:高级-教授
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学科领域:
材料科学基础学科
- 研究兴趣:光致形变液晶高分子,高分子自组装材料,光响应智能界面材料
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460
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成果数
6
俞燕蕾, Yanlei Yu a, b, Tomiki Ikeda a, *
Journal of Photochemistry and Photobiology C: Photochemistry Reviews 5(2004)247-265,-0001,():
-1年11月30日
Recent progress in alignment modulation of azobenzene-containing liquid crystal systems by hotochemical reactions has been reviewed by dividing the modulation methods into two types: phase transitions (order-disorder change) and change of liquid crystal directors (order-order change). First, photochemical phase transitions and alignment changes of liquid crystals in guest/host ixtures and polymers are summarized. Then, alignment control of liquid crystals by linearly polarized light and photoactive surface layers is discussed. Finally, recent applications of alignment change and photochemical phase transitions of liquid crystals in holographic technology and photomechanical effects are introduced. In addition, future possible applications for a variety of practical devices, such as display devices, optical switching and reversible optical image storage, are mentioned.
Liquid crystal, Azobenzene, Photoisomerization, Photochemical phase transition, Alignment change, Holography, Photomechanical effect
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【期刊论文】Directed bending of a polymer film by light
俞燕蕾, Yanlei Yu, Makoto Nakano, Tomiki Ikeda
NATURE VOL 425 11 SEPTEMBER 2003,-0001,():
-1年11月30日
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俞燕蕾, Yanlei Yu, *, , Tomiki Ikeda *
,-0001,():
-1年11月30日
Starting in the 1960s, several kinds of photodeformable polymers have been developed, such as monolayers, polymer gels, solid films and liquid-crystalline elastomers with different photodeformation mechanisms. This field evolved slowly until recently when significant achievements have been made. Most recently, Lendlein and co-workers have put forward another new concept-using photo-crosslinking to prepare deformable polymers with various pre-determined shapes (Nature 2005, 434, 879). This highlight gives a general introduction into photodeformable polymers and brings forth future challenges.
gels, liquid-crystalline elastomers, monolayers, photodeformation, shape-memory polymers
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俞燕蕾, Yanlei Yu, Makoto Nakano, Atsushi Shishido, Takeshi Shiono, and Tomiki lkeda *
Chem. Mater. 2004, 16, 1637-1643,-0001,():
-1年11月30日
Oriented liquid-crystalline network fihns with various cross linking densities were prepared by polymerization of mixtures of mono and diacrylates, both of which contain azobenzene chromophores. The optical anisotropy in the fihns was evaluated by polarizing optical microscopy and polarized IR spectroscopy. The dichroic ratios and the order parameters of the films were estimated from polarized UV absorbance. The free standing fihns were found to show photoinduced bending and unbending behavior upon alternate exposure to unpolarized UV light at 366nm and unpolarized visible light at>540 rnm. It was observed that the fihns with different cross linking densities exhibited different bending extents and speeds.
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【期刊论文】Photoinduced bending and unbending behavior of liquid-crystalline gels and elastomers*
俞燕蕾, Yanlei Yu , , Makoto Nakano , †, and Tomiki Ikeda
Pure AppL Chem., Vol. 76, Nos.7-8, pp. 1435-1445, 2004.,-0001,():
-1年11月30日
Liquid-crystalline gels and elastomers were prepared by polymerization of mix-tures containing azobenzene monomers and cross linkers with azobenzene moieties. Oriented liquid-crystalline gels and elastomer fihns were found to undergo anisotropic bending and unbending behavior only along the robbing direction, when exposed to alternate irradiation of unpolarized UV and visible light. In the case of polydomain liquid-crystalline elastomer fihns, the bending and unbending were induced exactly along the polarization direction of in-cident linearly polarized light. By altering the polarization direction of light, a single fihn could be bent repeatedly and precisely along any chosen direction.
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俞燕蕾, By Torniki Iked a, * Makoto Nakano, Yanlei Yu, Osamu Tsutsumi, and Akihiko Kanazawa
Adv. Mater. 2003, 15, No.3, February 5,-0001,():
-1年11月30日
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