[苝和芘之间荧光猝灭的比较]
[The comparisons of fluorescence quenching between perylene and pyrene].
作者信息
Chen Z, Zhang Z, Yuan X, Zhang G, Bai F
机构信息
Department of Chemistry, Shanxi University, 030006 Taiyuan.
出版信息
Guang Pu Xue Yu Guang Pu Fen Xi. 2001 Jun;21(3):362-5.
The fluorescence quenching of perylene and pyrene by dimethyl terephthalate (DMTP) and N,N-dimethylaniline (DMA) have been investigated. The results show that pyrene can form exciplex with DMTP or DMA at room temperature and perylene can only form exciplex with DMA. The fluorescence quenching date is in conformity with the Stern-Volmer equation: F0/F = 1 + KSV[Q] = 1 + Kq.tau 0[Q], the F0/F-[Q] straight lines are drawn. The Stren-Volmer constants and fluorescence quenching rate constants (KSV and Kq) are obtained. The Stern-Volmer quenching constants of pyrene is larger than that of perylene. The differences is due to the molecular structure of perylene which is not a typical large conjugated system and less coplanar configuration than pyrene.
研究了对苯二甲酸二甲酯（DMTP）和N，N-二甲基苯胺（DMA）对苝和芘的荧光猝灭作用。结果表明，芘在室温下可与DMTP或DMA形成激基复合物，而苝仅能与DMA形成激基复合物。荧光猝灭数据符合Stern-Volmer方程：F0/F = 1 + KSV[Q] = 1 + Kq.tau 0[Q]，据此绘制了F0/F-[Q]直线。得到了Stern-Volmer常数和荧光猝灭速率常数（KSV和Kq）。芘的Stern-Volmer猝灭常数大于苝的。这种差异是由于苝的分子结构不是典型的大共轭体系，且共平面构型比芘少。
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