Photoswitchable functional organic materials

光开关功能有机材料

• 批准号: 08555229
• 负责人: KIJI Jitsuo
• 金额: $ 5.57万
• 依托单位: Tottori University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08555229/
• 关键词: Chiral fulgide; Indolylgulgide; Photoswitchable function; Photochromism; Fluorescence; Fatigue-resistant Photochromic molecule

(1) Control of the Pitch of Liquid Crystal by Photochromic ReactionsChiral binaphthol-condensed fulgide derivatives work as the chiral dopants to induce the cholestic phases when doped with a nematic liquid crystal (LC). Their photochromic reactions induce the reversible and large change of the pitch values of the choleslic phases. Structural control of LC is possible by on/off switching of the photochromism.(2) Control of Fluorescence by Photochromic ReactionsWhile the colorless form of the propyl-substituted, binaphthol-condensed indolylfulgide does not emit fluorescence, its colored form, which is generated by UV-irradiation, emits fluorescence. A perfect on/off switching system of fluorescence controlled by the photochromism was exhibited.(3) CD Spectra and Optical Rotation of Chiral FulgidesResolved, optically-active indolylfulgide, and binaphthol-condensed indolylfulgides and beuzofulgides were synthesized and their CD spectra and optical rotation were measured. Large change of specific rotation values was observed by photochromic reactions.(4) Others(a) An indolylfulgide, which is trapped in an organic-inorganic matrix prepared by the sol-gel possess using methyltri-methoxysilane, showed photochromism.(b) Bisthienylfulgides of C2 synimetly were prepared by the palladium-catalyzed carbonylation method and their photo-chromic reactions were studied.(c) Crowned flilgides were prepared and their photochromic reactions were studied in the presence or absence of guest cations.

(1)通过光致变色反应控制液晶的节距手性联萘酚缩合俘精酸酐衍生物作为手性掺杂剂，当掺杂向列型液晶(LC)时诱导胆甾相。它们的光致变色反应引起胆甾相的螺距值发生可逆的大变化。通过光致变色的开/关切换可以实现液晶的结构控制。 (2)通过光致变色反应控制荧光虽然无色形式的丙基取代联萘酚缩合吲哚基俘精酸酐不发射荧光，但其通过紫外线照射产生的有色形式发射荧光。 (3)手性俘精酸酐的圆二色光谱和旋光度合成了旋光吲哚酸酐、联萘酚缩合吲哚酸酐和苯并俘精酸酐，并测量了它们的圆二色光谱和旋光度。通过光致变色反应观察到比旋光度值发生较大变化。(4)其他(a)在甲基三甲氧基硅烷溶胶-凝胶制备的有机-无机基质中捕获的吲哚基俘精酸酐表现出光致变色现象。(b)采用钯催化羰基化方法制备了C2同构双噻吩基俘精酸酐及其制备方法。 研究了光致变色反应。(c)制备了冠螟类化合物并研究了其在客体阳离子存在或不存在下的光致变色反应。

项目成果

Y.Yokoyama: "Role of the Methoxy Substituents on the Photochromic Indolylfulgides. Absorption Maximum vs.Molar Absorption Coefficient of the Colored Form." Chem.Lett.1996 (8). 587-588 (1996)

Y.Yokoyama：“甲氧基取代基对光致变色吲哚酰酸酐的作用。有色形式的最大吸收与摩尔吸收系数。”

Y.Yokoyama: "Reversible Control of Pitch of Induced Cholesteric Liquid Crystal by Optically Active Photochromic Fulgide Derivatives." Chem.Lett.1997 (8). 687-688 (1997)

Y.Yokoyama：“通过光学活性光致变色俘精酸酐衍生物对诱导胆甾型液晶的螺距进行可逆控制”。

横山 泰: "有機フォトクロミズムの化学" 学会出版センター, 110-128 (1996)

横山靖：《有机光致变色化学》学会出版中心，110-128（1996）

J.Biteau: "Photochromism of an Indolylfulgide Trapped in a Hybrid Sol-Gel Matrix." Chem.Lett.1998 (4). 359-360 (1998)

J.Biteau：“捕获在混合溶胶-凝胶基质中的吲哚酸酐的光致变色。”

Y.Yokoyama: "Chiral Photochromic Compounds and Control of Functions." Enantiomer.3 (2). 123-132 (1998)

Y.Yokoyama：“手性光致变色化合物和功能控制”。