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- Title
Efficient Intramolecular Energy Transfer between Two Fluorophores in a Bis-Branched [3]Rotaxane.
- Authors
Yao, Jian; Li, Hong; Xu, Ya ‐ Nan; Wang, Qiao ‐ Chun; Qu, Da ‐ Hui
- Abstract
A bis-branched [3]rotaxane, with two [2]rotaxane arms separated by an oligo( para-phenylenevinylene) (OPV) fluorophore, was designed and investigated. Each [2]rotaxane arm employed a difluoroboradiaza- s-indacene (BODIPY) dye-functionalized dibenzo[24]crown-8 macrocycle interlocked onto a dibenzylammonium in the rod part. The chemical structure of the [3]rotaxane was confirmed and characterized by 1H and 13C NMR spectroscopy and high-resolution ESI mass spectrometry. The photophysical properties of [3]rotaxane and its reference systems were investigated through UV/Vis absorption, fluorescence, and time-resolved fluorescence spectroscopy. An efficient energy-transfer process in [3]rotaxane occurred from the OPV donor to the BODIPY acceptor because of the large overlap between the absorption spectrum of the BODIPY moiety and the emission spectrum of the OPV fluorophore; this shows the important potential of this system for designing functional molecular systems.
- Subjects
VIBRATIONAL redistribution (Molecular physics); FLUOROPHORES; ROTAXANES; DIBENAMINE; NUCLEAR magnetic resonance spectroscopy; MASS spectrometry; ABSORPTION spectra
- Publication
Chemistry - An Asian Journal, 2014, Vol 9, Issue 12, p3482
- ISSN
1861-4728
- Publication type
Article
- DOI
10.1002/asia.201402789