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Jiang Z, Zhao Y, Luo Z, Peng A, Wang H, Yao J. Delayed Fluorescent Emission from Pyrene Doped Phenanthrene Nanoparticles Based on Triplet-triplet Energy Transfer. CHINESE J CHEM 2010. [DOI: 10.1002/cjoc.201090349] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Kozankiewicz B, Al-Abbas J, Prochorow J. Migration of electronic excitation energy in the charge-transfer crystal of pyromellitic dianhydride-phenanthrene. Chem Phys Lett 1995. [DOI: 10.1016/0009-2614(95)00162-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Frank HA, Innes J, Aldema M, Neumann R, Schenck CC. Triplet state EPR of reaction centers from the His(L173)→Leu (L173) mutant of Rhodobacter sphaeroides which contains a heterodimer primary donor. PHOTOSYNTHESIS RESEARCH 1993; 38:99-109. [PMID: 24317835 DOI: 10.1007/bf00015066] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/1993] [Accepted: 08/11/1993] [Indexed: 06/02/2023]
Abstract
Electron paramagnetic resonance (EPR) spectroscopy has been used to examine the triplet states in reaction centers of Rhodobacter sphaeroides which have undergone a genetic modification affecting the primary donor. Reaction centers containing the His(L173)→Leu(L173) substitution in the amino acid sequence have a primary donor which consists of a BChl-BPh heterodimer. The triplets formed in this heterodimer reaction center were compared with those formed in the wild-type reaction center which contains the BChl-BChl homodimer. Both reaction centers transfer triplet energy to the carotenoid under illumination at liquid nitrogen temperatures (∼90 K). However, the intensity of the carotenoid triplet signal is significantly decreased in the Leu(L173) mutant compared with the wild-type reaction center. At 12 K, in wild-type reaction centers only the primary donor triplet is observed. The Leu(L173) mutant exhibits a signal similar to that observed by Bylina et al. (1990) in His(M200)→Leu(M200) mutant reaction centers from Rb. capsulatus. The values of the zero-field splitting parameters of this triplet are discussed within the context of various models for the primary donor triplet state. No alteration in the ability of the carotenoid to quench the primary donor triplet state results from mutations at these sites.
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Affiliation(s)
- H A Frank
- Department of Chemistry, University of Connecticut, 06269-3060, Storrs, CT, USA
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Thermal-delayed fluorescence of pyromellitic dianhydride—anthracene trap in charge-transfer pyromellitic dianhyride—phenanthrene host crystal. Chem Phys Lett 1990. [DOI: 10.1016/0009-2614(90)87226-h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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The mechanisms of delayed fluorescence in charge-transfer crystal of tetracyanobenzene-hexamethylbenzene. Chem Phys 1989. [DOI: 10.1016/0301-0104(89)87030-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Gundel D, Frick J, Krzystek J, Sixl H, von Schütz J, Wolf H. A quasi-neutral triplet state of TCNQ in phenazine/TCNQ and fluorene/TCNQ CT crystals. Chem Phys 1989. [DOI: 10.1016/0301-0104(89)80030-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Energy transfer and exciton self-trapping in the charge-transfer crystal naphthalene-tetracyanobenzene. Chem Phys 1988. [DOI: 10.1016/0301-0104(88)85063-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Lisa Maniero A, Corvaja C, Pasimeni L. Proton endor spectra of phenanthrene-TCNB triplet traps in single crystals of naphthalene-TCNB. Chem Phys 1988. [DOI: 10.1016/0301-0104(88)87027-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Kozankiewicz B. The origin of delayed fluorescence in charge-transfer crystals: pyromellitic dianhydride-phenanthrene crystal. Chem Phys Lett 1987. [DOI: 10.1016/0009-2614(87)87145-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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The 1:1 charge-transfer crystal fluorene-1,2,4,5-tetracyanobenzene (F-TCNB): triplet excitons, optical and structural properties. Chem Phys 1986. [DOI: 10.1016/0301-0104(86)87001-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Bos FC, Schmidt J. Photoinduced reorientation in an electron donor–acceptor complex: An optically detected ENDOR study of triplet traps in anthracene/tetracyanobenzene. J Chem Phys 1986. [DOI: 10.1063/1.450604] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Corvaja C, Maniero A, Pasimeni L. ENDOR of the pyrene triplet state in the charge-transfer crystal naphthalene—tetracyanobenzene. Chem Phys 1985. [DOI: 10.1016/0301-0104(85)85009-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Agostini G, Corvaja C, Giacometti G, Pasimeni L. Delayed-fluorescence ODMR and EPR studies of triplet excitons in charge-transfer molecular crystals. Chem Phys 1983. [DOI: 10.1016/0301-0104(83)85080-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Fünfschilling J, Samoc M, Williams D. Quenching of the delayed fluorescence by charge carriers in crystals of anthracene—TCNB CT complex. Chem Phys Lett 1983. [DOI: 10.1016/0009-2614(83)80483-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Samoc M, Williams DF. Photoconductivity in crystals of charge‐transfer complex anthracene–tetracyanobenzene. J Chem Phys 1983. [DOI: 10.1063/1.444937] [Citation(s) in RCA: 34] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Ripmeester JA, Reddoch AH, Dalal NS. Molecular dynamics and the phase transition in the naphthalene–tetracyanobenzene charge‐transfer complex as studied by1H NMR and triplet state EPR. J Chem Phys 1981. [DOI: 10.1063/1.441291] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Krzystek J. Zero-field-splitting of some aromatic charge-transfer complexes in their lowest excited triplet states—an ESR study. ACTA ACUST UNITED AC 1980. [DOI: 10.1002/mrc.1270130219] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Kozankiewicz B, Prochorow J. On the origin of long-lived emission in some charge-transfer crystals. Chem Phys Lett 1979. [DOI: 10.1016/0009-2614(79)80660-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Keijzers CP, Duran J, Haarer D. Spin polarization of charge‐transfer triplet excitons in phenanthrene–PMDA single crystals. J Chem Phys 1978. [DOI: 10.1063/1.437061] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Beckman R, Small G. Optical studies of the electronphonon interaction in the pyrene-PMDA complex. Chem Phys 1978. [DOI: 10.1016/0301-0104(78)85102-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Möhwald H, Erdle E, Thaer A. Orientational phase transition in a charge-transfer crystal: Triplet excitons as probes for lattice dynamics. Chem Phys 1978. [DOI: 10.1016/0301-0104(78)85164-7] [Citation(s) in RCA: 42] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Temperature dependence of the zero-field spilittings of triplet excitions in anthracene-tetracyanobenzene crystals. Chem Phys Lett 1977. [DOI: 10.1016/0009-2614(77)85423-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Ponte Goncalves AM. Electron paramagnetic resonance of triplet excitons in anthracene-tetracyanobenzene crystals. Chem Phys 1977. [DOI: 10.1016/0301-0104(77)85011-8] [Citation(s) in RCA: 62] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Haarer D, Keijzers CP, Silbey R. The phosphorescence blue shift of anthracene in a charge transfer configuration: A consequence of the donor acceptor overlap in anthracene–PMDA crystals. J Chem Phys 1977. [DOI: 10.1063/1.433977] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Keijzers CP, Haarer D. EPR spectroscopy of delocalized and localized charge-transfer excitons in phenanthrene–PMDA single crystals. J Chem Phys 1977. [DOI: 10.1063/1.434917] [Citation(s) in RCA: 34] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Möhwald H, Bℏm A. High resolution esr experiments to determine the electron distribution in charge-transfer triplet states. Chem Phys Lett 1976. [DOI: 10.1016/0009-2614(76)80754-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Dalal N, Haarer D, Bargon J, Möhwald H. ESR study of the hyperfine structure of the triplet state in crystalline donor acceptor complexes: A probe for the degree of charge transfer in the excited state. Chem Phys Lett 1976. [DOI: 10.1016/0009-2614(76)85089-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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