Fluorescence resonance energy transfer in novel multiphoton absorbing dendritic structures

Darryl W. Brousmiche, Jason M. Serin, Jean M.J. Fréchet, Guang S. He, Tzu Chau Lin, Sung Jae Chung, Paras N. Prasad, Ramamurthi Kannan, Loon Seng Tan

研究成果: 雜誌貢獻期刊論文同行評審

85 引文 斯高帕斯(Scopus)


A series of small dendritic structures containing one of two efficient multiphoton absorbing dyes at the periphery and a nile red derivative at the core have been synthesized. These molecules display efficient (>96%) fluorescence resonance energy transfer (FRET) from the periphery to the core on selective excitation of the two-photon absorbing chromophore by either UV (linear absorption) or high-intensity IR (nonlinear absorption) radiation. In addition, a significant increase in core emission is observed on excitation of the peripheral chromophores, compared to direct excitation of the core. This "antenna effect" essentially doubles between increasing dendrimer generations within a series. The combination of the ability of the peripheral chromophores to absorb high-intensity IR radiation, coupled with a very efficient energy transfer process and a significant increase in the fluorescence of the acceptor chromophore, makes these molecules potentially useful for a variety of applications, including optical power limiting and biomedical imaging.

頁(從 - 到)8592-8600
期刊Journal of Physical Chemistry B
出版狀態已出版 - 24 6月 2004


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