Construction of Supramolecular Photochromic System

1非晶态玻璃中光致变色的研究一种吲哚基光致变色剂在溶胶-凝胶法制备的非晶态有机玻璃中表现出普通的光致变色性。研究表明，有机玻璃可应用于光学记录介质等材料中。2、呋喃甲酰亚胺与二氨基吡啶类化合物的可逆络合反应：在光照射下，呋喃甲酰亚胺与客体分子如2，5-二酰氨基吡啶形成互补的多重氢键的缔合常数可以发生很大变化。3胆甾型液晶胆甾相螺距的可逆控制向向列相液晶中加入手性光致变色掺杂剂，如二萘酚缩合的吲哚基黄腐酸，可诱导胆甾型液晶相。光照射对胆甾相的节距长度有很大的影响。这一现象可以用来控制胆甾相的选择反射波长。4.冠醚类化合物的络合和光致变色研究阐明了以冠醚为基团的黄原酸盐类化合物的光致变色行为。在开环结构中加入适合冠醚环的碱金属阳离子，由于分子构象的变化，抑制了光致变色环的闭合显色反应。从而实现了通过共存的化学物种来控制光致变色性能。

1 Photochromism of Fulgides in Amorphous GlassesAn indolylfulgide showed the ordinary photochromism in the amorphous organic glasses prepared by sol-gel method. It has been shown that organic glasses can be used for application of fulgides to materials such as optical recording media.2 Reversible Complexation between Fulgimide and Diaminopyridine DerivativesThe association constants between fulgimide and guest molecules such as 2,5-diacylaminopyridine which can form complementary multiplex hydrogen-bonding can be altered largely by photoirradiation.3 Reversible Control of Cholesteric Pitch Values of Cholesteric Liquid CrystalsAddition of chiral photochromic dopant such as binaphthol-condensed indolylfulgide to nematic liquid crystals induced cholesteric liquid crystaline phase. Photoirradiation changed the cholesteric pitch length largely. This phenomena can be used to control the selective reflection wavelength of cholesteric phases.4 Complexation and Photochromism of Crowned FulgenatesPhotochromism of fulgenate derivatives possessing crown-ether moieties as the cyclic diesters was clarified. Addition of alkali metal cations, which fit the crown-ether rings, to the open forms inhibited photochromic ring closing coloration reactions because of changing of molecular conformations. Control of photochromic properties by co-existing chemical species was thus achieved.