Ontology highlight
ABSTRACT:
SUBMITTER: Gassensmith JJ
PROVIDER: S-EPMC2848988 | biostudies-literature | 2008 Aug
REPOSITORIES: biostudies-literature
Gassensmith Jeremiah J JJ Barr Lorna L Baumes Jeffrey M JM Paek Agelina A Nguyen Anh A Smith Bradley D BD
Organic letters 20080627 15
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 ...[more]