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Volumn 122, Issue 32, 2000, Pages 7662-7672

C 2-symmetric dibenzosuberane-based helicenes as potential chirochromic optical switches

Author keywords

[No Author keywords available]

Indexed keywords

BENZOIC ACID DERIVATIVE;

EID: 0034675016     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja993297d     Document Type: Article
Times cited : (60)

References (65)
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    • note
    • pss stands for the enantiomeric excess of a helicene under a photostationary state at a given irradiation wavelength.
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    • (a) Their chemical yields were all = 80% if based on recovered 1.
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    • (b) See the Supporting Information for the X-ray data of 6a-c and 7c.
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    • Unpublished results from this laboratory
    • Unpublished results from this laboratory.
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    • note
    • Molecular modeling was carried out on an SGI-Indy Worksystem. Global minimum conformations of the diastereomeric pair, 7c and 7c′, were calculated with the Sybyl simulation package.
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    • (a) Irradiations were carried out with a 300 W Xe lamp equipped with a monochromator with a slit size equivalent to 16 nm bandwidth.
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    • (b) Irradiation was performed with a 100 W Hg lamp equipped with a 20-nm bandwidth filter.
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    • (a) ZLI-1167: 4-n-alkyl-4-cyano-1,1′-bicyclohexyls.
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    • note
    • (b) K-15: 4-cyano-4′-pentoxy-biphenyl.
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    • note
    • The retention time of ZLI-1167 happens to coincide with that of 7a on HPLC chromatogram.
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    • (a) Simulations were performed in CAChe Worksystem.
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    • note
    • P-eq.
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    • Photoisomerization with a concomitant conformational flip for 1,1′,2,2′,3,3′,4,4′-octahydro-3,3′-dimethyl-4, 4′-biphenanthrylidenes as monodirectional molecular rotors has been recently documented, see: Feringa, B. L. Nature 1999, 401, 152.
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* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.