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Vibrationally resolved absorption and emission spectra of rubrene multichromophores : temperature and aggregation effects

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Vibrationally resolved absorption and emission spectra of rubrene multichromophores : temperature and aggregation effects

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dc.contributor.author Gao, Fang
dc.contributor.author Liang, Wanzhen
dc.contributor.author Zhao, Yang
dc.date.accessioned 2011-12-15T08:15:12Z
dc.date.available 2011-12-15T08:15:12Z
dc.date.copyright 2009
dc.date.issued 2011-12-15
dc.identifier.citation Gao, F., Liang, W., & Zhao, Y. (2009) Vibrationally Resolved Absorption and Emission Spectra of Rubrene Multichromophores: Temperature and Aggregation Effects. Journal of Physical Chemistry A, 113(46), 12847–12856.
dc.identifier.uri http://hdl.handle.net/10220/7409
dc.description.abstract We present a theoretical study on the temperature-dependent absorption and photoluminescence spectroscopy of rubrene multichromophores by combining the time-dependent long-range-corrected density functional theory with the exciton model. The spectra of rubrene multichromophores up to heptamers are calculated, and the effects of exciton−phonon coupling and temperature on the photophysical properties of both H- and J-aggregated oligomers are addressed. It is found that the spectral behavior of rubrene aggregates is very much dependent on aggregation details. As the temperature increases, higher excitonic states become populated, and low-energy dark states in H-aggregated oligomers become observable gradually while the peak intensities near the 0−0 transition decrease for J-aggregated oligomers.
dc.language.iso en
dc.relation.ispartofseries Journal of physical chemistry A
dc.rights © 2009 American Chemical Society
dc.subject DRNTU::Engineering::Materials::Photonics and optoelectronics materials.
dc.title Vibrationally resolved absorption and emission spectra of rubrene multichromophores : temperature and aggregation effects
dc.type Journal Article
dc.contributor.school School of Materials Science and Engineering
dc.identifier.doi http://dx.doi.org/10.1021/jp904105p

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