Color tunability in photochromic naphthopyrans

被引:26
作者
Kumar, A [1 ]
Van Gemert, B [1 ]
Knowles, DB [1 ]
机构
[1] PPG Ind Inc, Monroeville, PA 15146 USA
来源
MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 2000年 / 344卷
关键词
naphthopyran; photochromic; spectra; chromene;
D O I
10.1080/10587250008023839
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Photochromic naphthopyrans are of particular interest due to their wide use in applications such as switchable eyewear, security devices and novelty items. The spectral properties of the activated form are important in many of these applications. This paper reports the effect of substituents on the visible absorption of the activated form(s). In addition to color, other photochromic properties of naphthopyrans are briefly discussed.
引用
收藏
页码:217 / 222
页数:6
相关论文
共 21 条
[11]  
KUMAR A, 1997, Patent No. 5650098
[12]  
Kumar A., 1997, United States Patent, Patent No. [5651923, US 5,651,923]
[13]  
KUMAR A, 1997, Patent No. 5658500
[14]  
Rickwood M., 1996, US Patent, Patent No. 5520853
[15]  
RICKWOOD M, 1996, Patent No. 5623005
[16]  
Van Gemert B, 1999, PPG TECHNOL J, V5, P53
[17]  
VANGEMBERT B, 1998, ORGANIC PHOTOCHROMIC, V1, pCH3
[18]   Naphthopyrans. Structural features and photochromic properties [J].
VanGemert, B ;
Kumar, A ;
Knowles, DB .
MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1997, 297 :131-138
[19]  
VANGEMERT B, 1994, MOL CRYS LIQ CRYS, V67
[20]  
VANGEMERT B, 1995, Patent No. 5466398