Azo-hydrazo Tautomerism and Inclusion Complexation of 1-phenylazo-2-naphthols with Various Solvents and beta-cyclodextrin

作者：Prabhu A Antony Muthu; Venkatesh G; Rajendiran N^*

来源：Journal of Fluorescence, 2010, 20(4): 961-972.

DOI：10.1007/s10895-010-0642-0

• 1-phenyazo-2-naphthol
• beta-cyclodextrin
• Inclusion complex
• Azo-hydrazo tautomerism

Spectral characteristics of sudan I (SDI), sudan II (SDII) and mordant violet-5 (MV5) have been studied in various solvents and beta-cyclodextrin (beta-CD). The inclusion complex of the above molecules with beta-CD was analyzed by UV-visible, fluorometry, and DFT methods. The solvent study shows that azo-hydrazo tautomer is present in these molecules. The increase in the fluorescence intensity and a large bathochromic shift in the S(1) state indicate these molecules forms 1:1 inclusion complex with beta-CD.

• 出版日期2010-7