Photoinduced refractive-index change in 4-tert-butylcalix[8]arenes bearing N-acyloxyphenylamide chromophores

Autor: Tetsutaro Igarashi, Tadamitsu Sakurai, Taichi Arai, Hiroya Suda
Rok vydání: 2012
Předmět:
Zdroj: Polymer Journal. 45:133-136
ISSN: 1349-0540
0032-3896
DOI: 10.1038/pj.2012.186
Popis: When O-(4-acyloxyanilinocarbonylmethyl)-4-tert-butylcalix[8]arene films were irradiated for 60 min with 254-nm UV light from a low-pressure mercury lamp, the calixarene derivative 1 underwent a highly selective photo-Fries rearrangement in the film state to yield the corresponding Fries-rearranged product 2 along with a minor amount of the fragmentation product 3. This photochemical rearrangement enhanced the refractive index of the films by as much as 0.015.
Databáze: OpenAIRE