[1] Krasovitskii, B. M., Bolotin, B. M., Organic Luminescent Materials, VCH, Basel (1988). [2] Hercules, D. M., Fluorescence and Phosphorescence Analysis, Interscience Publishers, New York (1996). [3] Moecldi, S., “Preparation of some new red fluorescent 4 cyanocoumarin dyes”, Dyes and Pigments, 1 (1), 3 (1990). [4] Rajagopal, R., Seshadri, S., “Synthesis and study of 6 arylazo coumarin derivatives”, Dyes and Pigments, 1 (13),29 (1990). [5] Rajagopal, R., Shenoy, V. U., Padmanabbhan, S., Sequeira, S., Seshadri, S., “Synthesis of fluorescent 2,3-fusod coumarin derivatives”, Dyes and Pigments, 3 (13), 161(1990). [6] Moorty, S. R., Sunaramurthy, V., Subbarao, N. V., Indian J. Chem., 11, 854 (1973). [7] Jones, G., Organic Reaction, 15, 217 (1967). [8] Venkataraman, K., The Chemistry of Synthetic Dyes, IV Acdamic Press, New York, 115 (1971). [9] De Vijlder, M., J. Chem. Soc. Perkin Trans. I., 75, 2077(1981). [10] Cheng, L., Chen, X., Hou, Y., Griffiths, J., “An approach to the prediction of absorption bandwiths of dyes using the PPP-MO procedure”, Dyes and Pigments, 10, 123 (1989). [11] Bonesi, S. M., Errs Balsells, R., J. Photochem. Photobiol.A: Chem., 56, 55 (1991). [12] Ziegler, H., Maier, H., Mh. Chem., 89, 150 (1958). |