A series of terarylenesbased on 4,5-bisbenzothienylthiazole have been synthesized, and their photochromic properties are studied both in solution and in the crystalline state. The substitution effect of the central aromatic ring on the photochromic reactivity were also studied. The introduction and expansion of the π-conjugated system at the 2-position of the thiazole ring led to a red-shift of the
Photosynergetic amplification of radiation input: from efficient UV induced cycloreversion to sensitive X-ray detection
作者:Ryosuke Asato、Colin J. Martin、Jan Patrick Calupitan、Ryo Mizutsu、Takuya Nakashima、Go Okada、Noriaki Kawaguchi、Takayuki Yanagida、Tsuyoshi Kawai
DOI:10.1039/c9sc05380h
日期:——
Five photochromicterarylenes which show reversible photocyclisation and cycloreversion with relatively high quantum yields are presented. Some of these have been observed to undergo a highly efficient cycloreversion cascade process from their coloured, closed forms to their uncoloured open forms that leads to cycloreversion quantum yields significantly larger than unity. This cascade effect can been