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70. Substituent Effects on Absorption and Fluorescence Spectra of Carbostyrils
Fabian W.M.F., Niederreiter K.S., Uray G., Stadlbauer W., J. Mol. Structure (1999), 209-220

Abstract: The substituent effects of a series of carbostyrils (2-quinolones) on absorption and fluorescence spectra have been studied. Furthermore the experimental results are completed by theoretical calculations using semiempirical molecuar orbital methods (AM1 and ZINDO) to help in the design of suited compounds with long wavelength absorbing and/or emitting compounds. The results show that donor substituents in position 6 have a more pronounced bathochromic shift than in position 7. The presence of 7-methoxy group enhances significantly the absorption intensity.


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