Synthesis and properties of photochromic 2,2-diarylnaphthopyrans compounds

被引：0

作者：

Tan, TF ^{[1
]}

Fu, YF ^{[1
]}

Han, J ^{[1
]}

Pang, ML ^{[1
]}

Meng, JB ^{[1
]}

机构：

[1] Nankai Univ, Dept Chem, Tianjin 300071, Peoples R China

来源：

CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE | 2006年 / 27卷 / 01期

关键词：

2,2-diarylnaphthopyran; photochromism; UV absorption spectrum; synthesis; property;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

On fading rate and maximum absorbent intensity consideration, a series of novel 2,2-diarylnaphthopyrans were designed and synthesized purposefully through the reaction of Gringnard reagents and naphthopyran biones, respectively. The structures of all the compounds were determined by H-1 NMR, IR, MS, and elemental analysis. Combined with UV-Vis, the photochromic properties of these compounds were studied intensively. The results indicated that the maximum absorbent wavelength of compounds in solutions will shift to longwave with the increase of electron-donor effect under UV-Vis irradiation. Moreover, the relationship between the structure and photofading rates was analyzed. The laws between photofading rate and substituent position were preliminarily explored. The speed of fading rate principally lies on the degree of freedom of C-C bond rotation. These laws gave us a valuable reference to synthesize the practical organic photochromic compounds.

引用

页码：75 / 78

页数：4

共 12 条

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