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Volumn 132, Issue 12, 2010, Pages 4191-4196

Photoswitchable intramolecular H-stacking of perylenebisimide

Author keywords

[No Author keywords available]

Indexed keywords

CENTRAL SWITCHING; DYNAMIC CONTROLS; EFFICIENT CONTROL; INTERMOLECULAR INTERACTIONS; ORDERS OF MAGNITUDE; ORGANIC OPTOELECTRONICS; PHOTO-SWITCHABLE; PHOTOSWITCHING; STACK FORMATION; UV-VIS ABSORPTIONS;

EID: 77950271961     PISSN: 00027863     EISSN: 15205126     Source Type: Journal    
DOI: 10.1021/ja910829b     Document Type: Article
Times cited : (88)

References (40)
  • 23
    • 77950249075 scopus 로고    scopus 로고
    • See the absorption spectrum (Figure Sl) of the reference compound 3
    • See the absorption spectrum (Figure Sl) of the reference compound 3.
  • 27
    • 54949152649 scopus 로고    scopus 로고
    • J-type PBI stacking would be expected to result in a strong absorption band centered at 600 nm, see for example: Würthner, F.; Bauer, C.; Stepanenko, V.; Yagai, S. Adv. Mater. 2008, 20, 1695-1698.
    • (2008) Adv. Mater , vol.20 , pp. 1695-1698
    • Würthner, F.1    Bauer, C.2    Stepanenko, V.3    Yagai, S.4
  • 33
    • 77950212552 scopus 로고    scopus 로고
    • note
    • It should be noted also that two distinct mechanisms for excited state quenching can be invoked to rationalise the behaviour of the present systems: (a) Energy transfer quenching of the excited state of the switching unit to the PBI and (b) photoinduced electron transfer quenching of the PBI excited state by the switching unit, (a) The excited state lifetime of the switching unit is of the order of 1-5 ps during which isomerisation takes place prior to relaxation to the ground state. For energy transfer from the excited switching unit to the ground state PBI unit to take place the energy transfer would have to proceed at a similar rate which is unlikely as previously we and others have shown that such energy transfer typically proceeds at rates of the order of 10-20 ps. (b) The excited state lifetime of the PBI excited state is of the order of 5-10 ns. Hence for the switching unit in the ground state to be able to engage in photoinduced electron transfer quenching then the rate would only have to be of the order of several nanoseconds to be competitive. Hence PET can be several orders of magnitude slower than energy transfer and still be competitive.
  • 35
    • 77950264357 scopus 로고    scopus 로고
    • note
    • In solvents such as heptane and acetone, intermolecular aggregation occurs manifested in the formation of precipitation and a more intense 0-1 band in both trans and cis state. Photoisomerization does not result in significant change in the absorption of PBI chromophore.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.