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Volumn 72, Issue 3, 2007, Pages 888-897

Opening a spiropyran ring by way of an exciplex intermediate

Author keywords

[No Author keywords available]

Indexed keywords

CHROMOPHORES; DECAY (ORGANIC); ENERGY TRANSFER; FLUORESCENT LAMPS; LIGHTING; MOLECULAR STRUCTURE; RATE CONSTANTS; SOLVENTS; SYNTHESIS (CHEMICAL);

EID: 33846923128     PISSN: 00223263     EISSN: None     Source Type: Journal    
DOI: 10.1021/jo062124l     Document Type: Article
Times cited : (17)

References (82)
  • 1
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    • Ed, Photochromism; Wiley-Interscience: New York
    • Brown G. H., Ed. Techniques of Chemistry; Vol. III, Photochromism; Wiley-Interscience: New York, 1971.
    • (1971) Techniques of Chemistry , vol.3
  • 2
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    • For a comprehensive review see:, and references cited therein
    • For a comprehensive review see: Irie, M. Chem. Rev. 2000, 100, 1683 and references cited therein.
    • (1683) Chem. Rev , vol.100
    • Irie, M.1
  • 3
    • 0000562142 scopus 로고
    • For a comprehensive review see:, and references cited therein
    • For a comprehensive review see: Hampp, N. Chem. Rev. 2000, 100, 1755 and references cited therein.
    • (1755) Chem. Rev , vol.100
    • Hampp, N.1
  • 4
    • 2942544399 scopus 로고    scopus 로고
    • For a comprehensive review see:, and references cited therein
    • For a comprehensive review see: Minkin, V. I. Chem. Rev. 2004, 104, 2751 and references cited therein.
    • (2004) Chem. Rev , vol.104 , pp. 2751
    • Minkin, V.I.1
  • 55
    • 33846917389 scopus 로고    scopus 로고
    • The term exciplex, originating from excited state complex, applies equally well to intermolecular and intramolecular species. Distinction between an exciplex and an excited charge-transfer state is less obvious.
    • (d) The term "exciplex", originating from "excited state complex", applies equally well to intermolecular and intramolecular species. Distinction between an exciplex and an excited charge-transfer state is less obvious.
  • 67
    • 33846923974 scopus 로고    scopus 로고
    • T and again there is no ring opening. The nitro group might facilitate intersystem crossing, because of its efficient spin orbit coupling properties, or weaken the bond around the spiro center, as shown by X-ray crystallography. Further research is required to fully explore this effect. Note well, the perylene derivative of P-SPN was particularly insoluble and limited analytical data are collected in the Supporting Information.
    • T and again there is no ring opening. The nitro group might facilitate intersystem crossing, because of its efficient spin orbit coupling properties, or weaken the bond around the spiro center, as shown by X-ray crystallography. Further research is required to fully explore this effect. Note well, the perylene derivative of P-SPN was particularly insoluble and limited analytical data are collected in the Supporting Information.
  • 79
    • 33846910978 scopus 로고    scopus 로고
    • Preliminary Write-Read-Erase experiments were carried out on P-SPN dispersed in sucrose octaacetate glass. Thus, pulsed illumination of a P-SPN impregnated glass with short wavelength light (λ max, 400 nm) caused the development of the usual colored product. The so-formed MC species could be detected by absorption spectroscopy. Subsequent illumination with a long wavelength pulse (λmax, 600 nm) bleached the colored spot and restored the original spectrum from the pyrene moiety. Repeated cycling was possible by exposure of the glass to the two different wavelengths see the Supporting Information
    • max = 600 nm) bleached the colored spot and restored the original spectrum from the pyrene moiety. Repeated cycling was possible by exposure of the glass to the two different wavelengths (see the Supporting Information).


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