Exciton dynamics in the light-harvesting complexes of Rhodobacter sphaeroides

T. Pullerits; M. Chachisvilis; M. R. Jones; C. N. Hunter; V. Sundström

doi:10.1016/0009-2614(94)00561-3

Exciton dynamics in the light-harvesting complexes of Rhodobacter sphaeroides

T. Pullerits, M. Chachisvilis, M. R. Jones, C. N. Hunter, V. Sundström

Research output: Contribution to journal › Article › peer-review

Abstract

We have used ≈ 40 fs pulses from a Ti:Sa laser to investigate the ultrafast energy transfer and relaxation dynamics in the LH1 and LH2 light-harvesting pigment-proteins of photosynthetic purple bacteria. Our results reveal a new feature, not earlier observed in light-harvesting pigments, ultrafast relaxation characterized by a time constant of approximately 20 fs, which we interpret as interexciton state relaxation. The experimental results are compared with computer simulations of transient excited state absorption from the excited states of an excitonic aggregate.

Original language	English
Pages (from-to)	355-365
Number of pages	11
Journal	Chemical Physics Letters
Volume	224
Issue number	3-4
DOIs	https://doi.org/10.1016/0009-2614(94)00561-3
Publication status	Published - 1994 Jul 15
Externally published	Yes

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title = "Exciton dynamics in the light-harvesting complexes of Rhodobacter sphaeroides",

abstract = "We have used ≈ 40 fs pulses from a Ti:Sa laser to investigate the ultrafast energy transfer and relaxation dynamics in the LH1 and LH2 light-harvesting pigment-proteins of photosynthetic purple bacteria. Our results reveal a new feature, not earlier observed in light-harvesting pigments, ultrafast relaxation characterized by a time constant of approximately 20 fs, which we interpret as interexciton state relaxation. The experimental results are compared with computer simulations of transient excited state absorption from the excited states of an excitonic aggregate.",

author = "T. Pullerits and M. Chachisvilis and Jones, \{M. R.\} and Hunter, \{C. N.\} and V. Sundstr{\"o}m",

year = "1994",

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doi = "10.1016/0009-2614(94)00561-3",

language = "English",

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journal = "Chemical Physics Letters",

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T1 - Exciton dynamics in the light-harvesting complexes of Rhodobacter sphaeroides

AU - Pullerits, T.

AU - Chachisvilis, M.

AU - Jones, M. R.

AU - Hunter, C. N.

AU - Sundström, V.

PY - 1994/7/15

Y1 - 1994/7/15

N2 - We have used ≈ 40 fs pulses from a Ti:Sa laser to investigate the ultrafast energy transfer and relaxation dynamics in the LH1 and LH2 light-harvesting pigment-proteins of photosynthetic purple bacteria. Our results reveal a new feature, not earlier observed in light-harvesting pigments, ultrafast relaxation characterized by a time constant of approximately 20 fs, which we interpret as interexciton state relaxation. The experimental results are compared with computer simulations of transient excited state absorption from the excited states of an excitonic aggregate.

AB - We have used ≈ 40 fs pulses from a Ti:Sa laser to investigate the ultrafast energy transfer and relaxation dynamics in the LH1 and LH2 light-harvesting pigment-proteins of photosynthetic purple bacteria. Our results reveal a new feature, not earlier observed in light-harvesting pigments, ultrafast relaxation characterized by a time constant of approximately 20 fs, which we interpret as interexciton state relaxation. The experimental results are compared with computer simulations of transient excited state absorption from the excited states of an excitonic aggregate.

UR - https://www.scopus.com/pages/publications/0000402982

U2 - 10.1016/0009-2614(94)00561-3

DO - 10.1016/0009-2614(94)00561-3

M3 - Article

AN - SCOPUS:0000402982

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VL - 224

SP - 355

EP - 365

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 3-4

ER -

Exciton dynamics in the light-harvesting complexes of Rhodobacter sphaeroides

Abstract

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