Thermal stability of merocyanine form in spiropyran/silica composite film
Thermal stability of merocyanine form in spiropyran/silica composite film
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DOI：
10.1016/j.tsf.2007.04.120
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发表时间：
2008-03-03
期刊：
影响因子：
2.1
通讯作者：
Ueda, Yasukiyo
中科院分区：
文献类型：
--
作者：
Kinashi, Kenji;Harada, Yasuhisa;Ueda, Yasukiyo
合成了三种引入十八烷基（SP18）、羟基（SPOH）和羧基（SPCOOH）的螺吡喃衍生物，并将其分散在不同的基质中，如氯仿溶剂、聚甲基丙烯酸甲酯（PMMA）/丙酮溶液和聚全氢硅氮烷（PSz）/间二甲苯溶液。研究了螺吡喃衍生物中光汞异构体（PMC型）分散在二氧化硅复合膜中的热稳定性。除SP18外，SiO2复合膜中PMC型的λ max处强度在较长时间内保持在初始值。PMC-SPOH和SPCOOH在二氧化硅基质中的羟基或羧基与氧原子之间形成分子间氢键。因此，在二氧化硅复合膜中SPOH和SPCOH的PMC形成显著稳定。(c)2007 Elsevier B. V.保留所有权利。
Three types of spiropyran derivatives introduced octadecyl group (SP18), hydroxyl group (SPOH) and carboxyl group (SPCOOH) were synthesized and were dispersed into various matrices such as chloroforrn solvent, polymethylmetacrylate (PMMA)/acetone solution and poly (perhydrosilazane) (PSz)/m-xylene solution. Thermal stability of photomerocyanine isomer (PMC-form) in spiropyran derivatives dispersed in silica composite film was studied. Intensity at lambda(max) of PMC-form in silica composite film keeps at initial values in long time except for SP18. PMC-form of SPOH and SPCOOH forms intermolecular hydrogen bonding between hydroxyl or carboxyl group and oxygen atom in silica matrix. Therefore, PMC-forrn of SPOH and SPCOOH in silica composite film is stabilized dramatically. (c) 2007 Elsevier B.V. All rights reserved.