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Volumn 5, Issue 20, 1995, Pages 2385-2390

Photoinduced electron transfer for pyrenesulfonamide conjugates of tryptophan-containing peptides. Mitigation of fluoroprobe behavior in N-terminal labeling experiments

Author keywords

[No Author keywords available]

Indexed keywords

SULFONAMIDE; TRYPTOPHAN DERIVATIVE;

EID: 0028874480     PISSN: 0960894X     EISSN: None     Source Type: Journal    
DOI: 10.1016/0960-894X(95)00416-Q     Document Type: Article
Times cited : (47)

References (29)
  • 1
    • 84916557092 scopus 로고    scopus 로고
    • Paper no. 6 in the series, Photoactive Peptides.
  • 4
    • 84989712905 scopus 로고
    • THE PHOTOPHYSICS AND PHOTOCHEMISTRY OF THE NEAR-UV ABSORBING AMINO ACIDS-I. TRYPTOPHAN AND ITS SIMPLE DERIVATIVES
    • (1984) Photochemistry and Photobiology , vol.39 , pp. 537
    • Creed1
  • 14
  • 20
    • 84916557091 scopus 로고    scopus 로고
    • Jones, II, G.; Lu, L. N.; Oh, C.; Mari, F.; Gosztola, D. J. Greenfield, S. R.; Wasielewski, M. R., in preparation.
  • 21
    • 84916557090 scopus 로고    scopus 로고
    • Conjugates were new compounds, with structures assigned consistent with proton and carbon NMR and HRMS determinations. For the NPyr series, 1,6- and 1,8- isomers were distinguished by NMR; the latter (major) products were utilized.
  • 22
    • 84916557089 scopus 로고    scopus 로고
    • Fluorescence lifetimes for the conjugates were also recorded using phase-shift fluorimetry [ref 6 and 11] with results that paralled the emission yields; for example, the average lifetimes from biexponential decays were 0.88 and 3.1 ns for PyrAlaTrp and PyrAlaAlaTrp, respectively, in acetonitrile.
  • 26
    • 84916557088 scopus 로고    scopus 로고
    • The transient decay kinetics from both fs and ns laser flash experiments were not cleanly exponential, as one might expect for systems in which back ET occurs at different rates for a multiplicity of peptide conformations. For the faster time scale, the decays could be fit nicely to double exponential functions for which weighted averages are presented (Table). For the NPyr series, the longer decay times that approach the μs range are under further investigation and reported here as half-lives.
  • 27
    • 84916557087 scopus 로고    scopus 로고
    • o′ = −1.69 and −2.15 V vs SCE, respectively (values referenced to the ferrocene couple and converted to SCE).
  • 28
    • 0039972823 scopus 로고
    • Photosensitization by reversible electron transfer: theories, experimental evidence, and examples
    • (1986) Chemical Reviews , vol.86 , pp. 401
    • Turro1    Kavarnos2
  • 29
    • 84916557086 scopus 로고    scopus 로고
    • et, including the size of the solvent reorganization energy, and the attentuation of electronic coupling with the distance that separates reactant groups [ref 6, 9 and 23].


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.