Effect of the Solvent Environment on the Spectroscopic Properties and Dynamics of the Lowest Excited States of Carotenoids

Harry A. Frank, James A. Bautista, Jesusa Josue, Zeus Pendon, Roger G. Hiller, Frank P. Sharples, David Gosztola, Michael R Wasielewski

Research output: Contribution to journalArticle

239 Citations (Scopus)

Abstract

The spectroscopic properties and dynamics of the lowest excited singlet states of peridinin, fucoxanthin, neoxanthin, uriolide acetate, spheroidene, and spheroidenone in several different solvents have been studied by steady-state absorption and fast-transient optical spectroscopic techniques. Peridinin, fucoxanthin, uriolide acetate, and spheroidenone, which contain carbonyl functional groups in conjugation with the carbon-carbon π-electron system, display broader absorption spectral features and are affected more by the solvent environment than neoxanthin and spheroidene, which do not contain carbonyl functional groups. The possible sources of the spectral broadening are explored by examining the absorption spectra at 77 K in glassy solvents. Also, carotenoids which contain carbonyls have complex transient absorption spectra and show a pronounced dependence of the excited singlet state lifetime on the solvent environment. It is postulated that these effects are related to the presence of an intramolecular charge transfer state strongly coupled to the S1 (21Ag) excited singlet state. Structural variations in the series of carotenoids studied here make it possible to focus on the general molecular features that control the spectroscopic and dynamic properties of carotenoids.

Original languageEnglish
Pages (from-to)4569-4577
Number of pages9
JournalJournal of Physical Chemistry B
Volume104
Issue number18
Publication statusPublished - May 11 2000

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carotenoids
Carotenoids
Excited states
absorption spectra
Functional groups
excitation
Absorption spectra
acetates
Acetates
Carbon
carbon
display devices
conjugation
dynamic characteristics
Charge transfer
charge transfer
life (durability)
Electrons
electrons
peridinin

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Effect of the Solvent Environment on the Spectroscopic Properties and Dynamics of the Lowest Excited States of Carotenoids. / Frank, Harry A.; Bautista, James A.; Josue, Jesusa; Pendon, Zeus; Hiller, Roger G.; Sharples, Frank P.; Gosztola, David; Wasielewski, Michael R.

In: Journal of Physical Chemistry B, Vol. 104, No. 18, 11.05.2000, p. 4569-4577.

Research output: Contribution to journalArticle

Frank, HA, Bautista, JA, Josue, J, Pendon, Z, Hiller, RG, Sharples, FP, Gosztola, D & Wasielewski, MR 2000, 'Effect of the Solvent Environment on the Spectroscopic Properties and Dynamics of the Lowest Excited States of Carotenoids', Journal of Physical Chemistry B, vol. 104, no. 18, pp. 4569-4577.
Frank HA, Bautista JA, Josue J, Pendon Z, Hiller RG, Sharples FP et al. Effect of the Solvent Environment on the Spectroscopic Properties and Dynamics of the Lowest Excited States of Carotenoids. Journal of Physical Chemistry B. 2000 May 11;104(18):4569-4577.
Frank, Harry A. ; Bautista, James A. ; Josue, Jesusa ; Pendon, Zeus ; Hiller, Roger G. ; Sharples, Frank P. ; Gosztola, David ; Wasielewski, Michael R. / Effect of the Solvent Environment on the Spectroscopic Properties and Dynamics of the Lowest Excited States of Carotenoids. In: Journal of Physical Chemistry B. 2000 ; Vol. 104, No. 18. pp. 4569-4577.
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