Solvent-dependent cis-trans one-way photoisomerization of bisformyl-substituted 1,6-diphenyl-1,3,5-hexatriene

Chemistry Letters

Volumn , Issue 8, 1996, Pages 659-660

  Sonoda, Yoriko ^a   Suzuki, Yasuzo ^a  

^a NATL INST OF MAT AND CHEM RES   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0030496601     PISSN: 03667022     EISSN: None     Source Type: Journal    
DOI: 10.1246/cl.1996.659     Document Type: Article

References (12)

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3. a) Y. Sonoda and K. Kaeriyama, Polymer, 33, 2437 (1992);
4. b) Y. Sonoda and Y Suzuki, J.Chem.Soc., Perkin Trans.2, 401 (1996).
5. 3a It was separated from by-products by recyclable GPC, and further purified by recrystallization from acetonitrile.
6. 3b
7. a) For measurements of quantum yields of isomerization, the concentrations of each isomer in the reaction mixtures were determined from UV-vis spectra at the stage of 8-10% conversion Light intensity was determined by potassium tris(oxalato)ferrate(III)actinometry;
8. 6 was used as the reference. The integrated areas of the spectra were multiplied by the square of the refractive index of the solvent used and compared with that obtained for the reference. All the emission spectra were obtained with diluted solutions (OD < 0.05) optically matched at the excitation wavelength (360 nm) using a fully corrected spectrofluorimeter with a rhodamine B photoncounter.
9. E.D. Cehelnik, R. B. Cundall, J.R. Lockwood, and T. F. Palmer, Chem.Phys.Lett., 27, 586 (1974).
10. G. Orlandi and W. Siebrand, Chem.Phys.Lett., 30, 352 (1975).
11. a in nonpolar solvents for diphenylpolyenes, see: S. L. Bondarev and S.M. Bachilo, J.Photochem.Photobiol.A, 59, 273 (1991).
12. S. L. Murov, I. Carmichael, and G. L. Hug, "Handbook of Photochemistry," 2nd ed., revised and expanded, Marcel Dekker, Inc., New York (1993), pp.284-287.