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Enhanced Two‐Photon Excitation Fluorescence by Fluorescence Resonance Energy Transfer Using Conjugated Polymers
Author(s) -
Tian N.,
Xu Q.H.
Publication year - 2007
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200700654
Subject(s) - conjugated system , materials science , fluorescence , förster resonance energy transfer , two photon excitation microscopy , excitation , polymer , photochemistry , resonance (particle physics) , cationic polymerization , resonance fluorescence , fluorescence in the life sciences , optoelectronics , optics , atomic physics , chemistry , physics , polymer chemistry , quantum mechanics , composite material
A two‐photon excitation fluorescence resonance energy transfer scheme , in a system consisting of a cationic conjugated polymer, dsDNA, and a DNA intercalator, is reported. The conjugated polymer acts as two‐photon excitation light‐harvesting complex (see figure). The two‐photon excitation fluorescence of the intercalator is found to be enhanced by a factor of over 35 upon addition of conjugated polymers. The obtained results may have profound implications in two‐photon imaging and phototherapy.