Reversible fluorescence intensity change of a diarylethene

Chemistry Letters

Volumn , Issue 11, 1998, Pages 1123-1124

  Takeshita, Michinori ^a   Irie, Masahiro ^a  

^a NONE

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0032286719     PISSN: 03667022     EISSN: None     Source Type: Journal    
DOI: 10.1246/cl.1998.1123     Document Type: Article

References (11)

1. For a review, see a) H. Dürr, in "Photochromism, Molecules and Systems," Elsevier, Amsterdam (1990).
2. b) M. Irie, in "Photo-reactive Materials for Ultrahigh Density Optical Memory," Elsevier, Amsterdam (1994).
3. E. A. Jareserijiman, L. L. Song, and T. M. Jovin, Mol. Cryst. Liq. Cryst., 297, 427 (1997).
4. J. Walz, K. Ulrich, H. Port, H. C. Wolf, J. Wonner, and F. Effenberger, Chem. Phys. Lett., 213, 321 (1993).
5. T. Inada, S Uchida, and Y. Yokoyama, Chem. Lett., 1997, 321.
6. H. Görner, C. Fischer, S. Gierisch, and J. Daub, J. Phys. Chem., 97, 4110 (1993).
7. N. P. M. Huck and B. L. Feringa, J. Chem. Soc., Chem. Commun., 1995, 1095.
8. G. M. Tsivgoulis and J.-M. Lehn, Angew. Chem., Int. Ed. Engl., 34, 1119 (1995); G. M. Tsivgoulis and J.-M. Lehn, Chem. Eur J., 2, 1399 (1996).
9. G. M. Tsivgoulis and J.-M. Lehn, Angew. Chem., Int. Ed. Engl., 34, 1119 (1995); G. M. Tsivgoulis and J.-M. Lehn, Chem. Eur J., 2, 1399 (1996).
10. Preparation and spectral data of these compounds will be published elsewhere.
11. 3, 200 MHz, 20°C) δ 1.95 (1.5H, s), 2.21 (1.5H, s), 2.24 (1.5H, s), 2.42 (3H, s), 2.50 (1.5H, s), 7.31-7.90 (8H, m), 9.93 (0.5H, s), 10.02 (0.5H, s). At 20°C, two conformations of 1a, the parallel and the anti-parallel conformations, were observed separately in NMR time scale and the ratio was 1:1, although these conformations exchange each other at room temperature.