Work

Electronic energy delocalization and dissipation in single- and double-stranded DNA

Year: 2007

Type: article

Abstract: The mechanism that nature applies to dissipate excess energy from solar UV light absorption in DNA is fundamental, because its efficiency determines the vulnerability of all genetic material to photodamage and subsequent mutations. Using femtosecond time-resolved broadband spectroscopy, we have traced the electronic excitation in both time and space along the base stack in a series of single-stranded and double-stranded DNA oligonucleotides. The obtained results demonstrate not only the presence of delocalized electronic domains (excitons) as a result of UV light absorption, but also reveal the spatial extent of the excitons.

Source: Proceedings of the National Academy of Sciences

DOI: 10.1073/pnas.0606757104

Authors: Ivan Buchvarov, Qiang Wang, Milen Raytchev, Anton Trifonov, Torsten Fiebig

Institution: Boston College

Language: English

Topic: Photochemistry and Electron Transfer Studies

Subfield: Physical and Theoretical Chemistry

Field: Chemistry

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2101443239

FWCI: 9.804

Cites: 40

Cited by: 178

Related to: 9