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Bulletin of the Chemical Society of Japan
Volumn 84, Issue 1, 2011, Pages 40-48
Synthesis of a doubly strapped light-harvesting porphyrin bearing energy donor molecules hanging on to the straps: An attempt toward macroscopic control over molecular conformation that affects the efficiency of fluorescence resonance energy transfer
Author keywords

[No Author keywords available]
Indexed keywords

ABSORPTION TRANSITIONS; ALKYL CHAIN; ANISOTROPIC ABSORPTION; BITHIOPHENES; DONOR AND ACCEPTOR; ELASTOMERIC FILMS; EMISSION TRANSITION; ENERGY ACCEPTORS; ENERGY DONORS; FLUORESCENCE RESONANCE ENERGY TRANSFER; LIGHT-HARVESTING; MOLECULAR CONFORMATION; MOLECULAR DESIGN; ORIENTATION FACTORS; POLYDIMETHYLSILOXANE PDMS; POLYSILOXANES; RELATIVE ORIENTATION; SPECTRAL MEASUREMENT; TRANSITION DIPOLE;
EID: 78751502916     PISSN: 00092673     EISSN: 13480634     Source Type: Journal    
DOI: 10.1246/bcsj.20100232     Document Type: Article
Times cited : (24)
References (53)
  • 36
    • 78751526822 scopus 로고    scopus 로고
    • 2nd ed., by Springer, New York, Chap. 13, Principles of Fluorescence Spectroscopy
    • J. R. Lakowicz, Principles of Fluorescence Spectroscopy, 2nd ed., by Springer, New York, 1999, Chap. 13, pp. 367394.
    • (1999) , pp. 367394
    • Lakowicz, J.R.1
  • 50
    • 78751469894 scopus 로고    scopus 로고
    • The fluorescence spectrum of the donor units in the stretched 1/PDMS film (Figure 3b) was blue-shifted compared to that of D1 in solution (Figure 1b) or that of D2 in the elastomeric films (see Figure S11 in the Supporting Information). It is unclear at present why the spectral shift was induced upon stretching. It should be noted that the blue-shifted donor fluorescence changes the spectral overlap integral [J(λ)] that is the factor affecting the FRET efficiency (E) as represented in eq 2. In fact, the blue-shifted donor fluorescence results in a larger spectral overlap integral [J(λ)]. Importantly, eqs 1 and 2 suggest that the FRET efficiency (E) will increase upon stretching in case a spectral overlap integral [J(λ)] increases. This predicted phenomenon is opposite to our results in which we observed the decrease of E upon stretching. Thus, we could at least rule out the effect of the blue-shifted donor fluorescence on our proposed mechanism
    • The fluorescence spectrum of the donor units in the stretched 1/PDMS film (Figure 3b) was blue-shifted compared to that of D1 in solution (Figure 1b) or that of D2 in the elastomeric films (see Figure S11 in the Supporting Information). It is unclear at present why the spectral shift was induced upon stretching. It should be noted that the blue-shifted donor fluorescence changes the spectral overlap integral [J(λ)] that is the factor affecting the FRET efficiency (E) as represented in eq 2. In fact, the blue-shifted donor fluorescence results in a larger spectral overlap integral [J(λ)]. Importantly, eqs 1 and 2 suggest that the FRET efficiency (E) will increase upon stretching in case a spectral overlap integral [J(λ)] increases. This predicted phenomenon is opposite to our results in which we observed the decrease of E upon stretching. Thus, we could at least rule out the effect of the blue-shifted donor fluorescence on our proposed mechanism.
  • 51
    • 78751548951 scopus 로고    scopus 로고
    • D) of 1 when elongated by 30 and 60% were calculated to be 0.045 (83.9°) and 0.019 (86.1°), respectively
    • D) of 1 when elongated by 30 and 60% were calculated to be 0.045 (83.9°) and 0.019 (86.1°), respectively.

* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.