Photochromism and hydrolysis of aromatic Schiff base N,N′-bis(salicylidene)-p-phenylenediamine (BSP) studied in heterogeneous environments
Photochromism and hydrolysis of aromatic Schiff base N,N′-bis(salicylidene)-p-phenylenediamine (BSP) studied in heterogeneous environments
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DOI：
10.1007/s10847-008-9509-2
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发表时间：
2009-04
影响因子：
2.3
通讯作者：
M. Ziółek;I. Sobczak
中科院分区：
文献类型：
--
作者：
M. Ziółek;I. Sobczak
在微孔、介孔分子筛和胶束体系的非均相环境中，用红外光谱和紫外可见光谱的静态光谱吸收和发射技术研究了光致变色对称席夫碱N，N‘-双(水杨基)-对苯二胺。所研究的分子与介孔材料中的硅醇基团之间的分子间氢键最初导致了顺酮互变异构体的稳定，后来导致了非常有效的水解。研究发现，包裹在微孔和介孔分子筛中的分子在紫外光照射后会发生持续的两步颜色变化。
A photochromic symmetric Schiff base, N,N′-bis(salicylidene)-p-phenylenediamine has been studied by means of stationary spectroscopic absorption and emission techniques in the IR and UV-vis spectral range in heterogeneous environments: microporous and mesoporous molecular sieves and micellar systems. The intermolecular hydrogen bonds between the molecule studied and silanol groups in mesoporous material have led initially to the stabilization of the cis-keto tautomer and later to a very effective hydrolysis. Persisting two-step color changes have been found to occur after the UV irradiation of the molecule studied encapsulated in microporous and mesoporous molecular sieves.