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Volumn 38, Issue 5, 1999, Pages 674-678

A novel three-way chromophoric molecular switch: pH and light controllable switching cycles

Author keywords

Fluorescence spectroscopy; Molecular devices; Optical memory; Photochromism; Tetraethynylethenes

Indexed keywords

AZULENE DERIVATIVE; ETHYLENE DERIVATIVE; N,N DIMETHYLANILINE;

EID: 0033105646     PISSN: 14337851     EISSN: None     Source Type: Journal    
DOI: 10.1002/(SICI)1521-3773(19990301)38:5<674::AID-ANIE674>3.0.CO;2-0     Document Type: Article
Times cited : (184)

References (38)
  • 1
    • 0003699562 scopus 로고
    • VCH, Weinheim
    • For an overview of switchable molecular devices, see a) J.-M. Lehn, Supramolecular Chemistry, VCH, Weinheim, 1995, pp. 124-138;
    • (1995) Supramolecular Chemistry , pp. 124-138
    • Lehn, J.-M.1
  • 2
    • 0000499466 scopus 로고    scopus 로고
    • b) M. Ward, Chem. Ind. 1997, 16, 640-645;
    • (1997) Chem. Ind. , vol.16 , pp. 640-645
    • Ward, M.1
  • 6
  • 17
    • 33747541328 scopus 로고    scopus 로고
    • note
    • 13C NMR spectroscopy, FAB-MS, and elemental analysis.
  • 18
    • 33747543403 scopus 로고    scopus 로고
    • note
    • 2) = 0.16 for 566 parameters and 3377 reflections with I > 2σ(I) and θ < 50°. The disordered seven-membered ring, based on one set of atomic positions, is nearly planar. However, by refining partial atoms as mentioned above, two different conformations are obtained. The one shown in Figure 1 (based on a population parameter of 0.63) is approximately boat shaped, whereas the other (based on a population parameter of 0.37) is less clear. Crystallographic data (without structure factors) for the structure reported in this paper have been deposited with the Cambridge Crystallographic Data Centre as supplementary publication no CCDC-102924. Copies of the data can be obtained free of charge on application to CCDC, 12 Union Road, Cambridge CB21EZ (fax: (+44)1223-336-033; e-mail: deposit@ccdc.cam.ac.uk).
  • 19
    • 33747561900 scopus 로고    scopus 로고
    • note
    • [13] An absolute error of about 10% is claimed for the quantum yields.
  • 27
    • 33747568571 scopus 로고    scopus 로고
    • note
    • The rate constant for the thermal electrocyclization was determined by an exponential fit of the data obtained by following the decrease in intensity of the absorption band at 500 nm (trans-1c) and at 481 nm (4b) at 25°C in the dark.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.