Characterization of the photochromism of dihydropyrenes with photophysical techniques

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• 作者：Cornelia Bohne  ; ;   ; ^{cornelia.bohne@gmail.com} ; Reginald H. Mitchell ;   ; ^{regmitch@uvic.ca}[Author vitae]
• 关键词：Photochromism ; Dihydropyrene ; Photophysics
• 刊名：Journal of Photochemistry and Photobiology, C: Photochemistry Reviews
• 出版年：2011
• 出版时间：September 2011
• 年：2011
• 卷：12
• 期：2
• 页码：126-137
• 全文大小：1337 K

文摘

Dihydropyrenes are negative photochromes and their photophysical characterization, achieved in the past decade, is reviewed. Special emphasis is given to the theoretical background and to the experimental details which are relevant for the characterization of bi-stable systems, such as photochromic ones. In contrast to most photochromic compounds, dihydropyrenes have long lifetimes for their photoreactive excited states making it possible to tune their reactivity with the introduction of substituents. This knowledge is applicable for the design of more efficient photochromic molecules and for multichromophoric systems.