Synthesis and Reversible Control of the Fluorescent Properties of a Divalent Tin Dipyrromethene
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- 作者：Junji Kobayashi ; Tomokatsu Kushida ; Takayuki Kawashima
- 刊名：Journal of the American Chemical Society
- 出版年：2009
- 出版时间：August 12, 2009
- 年：2009
- 卷：131
- 期：31
- 页码：10836-10837
- 全文大小：149K
- 年卷期：v.131,no.31(August 12, 2009)
- ISSN：1520-5126
文摘
A fluorescent chlorostannylene bearing a dipyrromethene ligand was synthesized. Its fluorescence quantum yield was low, Φf = 0.04, probably because of the existence of the lone-pair orbital energetically close to the π orbital. However, its fluorescence emission was increased to Φf = 0.42 by dechlorination using silver triflate. The resulting cationic species reverted again to the chlorostannylene upon reaction with tetrabutylammonium chloride, with a corresponding weakening of the fluorescence.