Synthesis and photophysical investigation of squaraine rotaxanes by "clicked capping"
Synthesis and photophysical investigation of squaraine rotaxanes by "clicked capping"
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DOI：
10.1021/ol801189a
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发表时间：
2008-08-07
期刊：
影响因子：
5.2
通讯作者：
Smith, Bradley D.
中科院分区：
文献类型：
--
作者：
Gassensmith, Jeremiah J.;Barr, Lorna;Smith, Bradley D.
Pseudorotaxane complexes of squaraine dyes and tetralactam macrocycles are converted into permanently interlocked rotaxane structures using copper-catalyzed and copper-free cycloaddition reactions with bulky stopper groups. The photophysical properties of the encapsulated squaraine depend on the structure of the macrocycle. In one case, squaraine rotaxanes are produced in near-quantitative yields and with intense near-IR fluorescence. In another case, squaraine fluorescence is greatly diminished upon macrocyclic encapsulation but the signal can be restored by dye displacement with anions.
