Fluorescence of DNA Duplexes: From Model Helices to Natural DNA
Chromophore
DOI:
10.1021/jz101122t
Publication Date:
2010-11-03T12:55:32Z
AUTHORS (3)
ABSTRACT
Recent fluorescence studies of DNA duplexes with a simple repetitive base sequence have revealed important collective effects which are very sensitive to conformational disorder. In contrast the monomeric chromophores, whose lifetimes shorter than 1 ps, decays span several decades time. The occurrence excitation energy transfer, evidenced by decay anisotropy on femtosecond time scale, is common feature all examined systems. It explained existence Franck−Condon exciton states, in line UV absorption spectra. Understanding nature long-lived excited emission dominates steady-state spectrum natural DNA, will be one challenges for years come.
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