The photochromic parameters of a set of 26 thiophene-substituted [3H]-naphtho[2,1-b]pyrans were studied by flash photolysis. The experimental results obtained along with molecular modelling approaches (molecular mechanics and quantum calculations) allowed us to propose structure-property relationships. From this approach, the main structural modifications able to induce large variations in electronic absorption, fading rates and coloration ability are discussed. Copyright (C) 2000 John Wiley & Sons, Ltd.
Photochromic bis-naphthopyran compounds and methods for their manufacture
申请人:——
公开号:US20030078441A1
公开(公告)日:2003-04-24
The invention provides photochromic bis-naphthopyran compounds as well as methods for their manufacture and their use. The bis-naphthopyran compounds of the invention exhibit a wide range of color, i.e., from pink to purple to blue gray, upon activation by a source of UV light. Additionally, the bis-naphthopyran compounds of the present invention exhibit broad coloration ability, fast response as to both color change on activation and return to original color, and good fatigue-resistance.
A Smart Photochromophore through Synergistic Coupling of Photochromic Subunits
作者:Weili Zhao、Erick M. Carreira
DOI:10.1021/ja017291b
日期:2002.2.1
The novel bis-naphthopyran 1 displays optical properties that are unique, differing substantively from a simple first-order superimposition of the monomeric constituents. Such a photochromophore has great promise for the development of smart optical devices.
PHOTOCHROMIC BIS-NAPHTHOPYRAN COMPOUNDS AND METHODS FOR THEIR MANUFACTURE
申请人:ESSILOR INTERNATIONAL
(COMPAGNIE GENERALE D'OPTIQUE)