Literature DB >> 20352305

Azo-hydrazo tautomerism and inclusion complexation of 1-phenylazo-2-naphthols with various solvents and beta-cyclodextrin.

A Antony Muthu Prabhu1, G Venkatesh, N Rajendiran.   

Abstract

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.

Entities:  

Year:  2010        PMID： 20352305     DOI： 10.1007/s10895-010-0642-0

Source DB:  PubMed          Journal:  J Fluoresc        ISSN： 1053-0509            Impact factor:   2.217


  7 in total

1.  Rotaxane-Encapsulation Enhances the Stability of an Azo Dye, in Solution and when Bonded to Cellulose This work was supported by the Engineering and Physical Sciences Research Council (UK) and by BASF plc.

Authors:  Michael R. Craig; Michael G. Hutchings; Tim D. W. Claridge; Harry L. Anderson
Journal:  Angew Chem Int Ed Engl       Date:  2001-03-16       Impact factor: 15.336

2.  The nature of solid-state N-H triplebondO/O-H triplebond N tautomeric competition in resonant systems. Intramolecular proton transfer in low-barrier hydrogen bonds formed by the triplebond O=C-C=N-NH triple bond --> <-- triplebond HO-C=C-N=N triplebond Ketohydrazone-Azoenol system. A variable-temperature X-ray crystallographic and DFT computational study.

Authors:  Paola Gilli; Valerio Bertolasi; Loretta Pretto; Antonín Lycka; Gastone Gilli
Journal:  J Am Chem Soc       Date:  2002-11-13       Impact factor: 15.419

3.  Intramolecular proton transfer effects on 2,6-diaminopyridine.

Authors:  A Antony Muthu Prabhu; S Siva; R K Sankaranarayanan; N Rajendiran
Journal:  J Fluoresc       Date:  2009-08-08       Impact factor: 2.217

4.  Heterodimerization of dye-modified cyclodextrins with native cyclodextrins.

Authors:  Tetsuo Kuwabara; Taiyo Aoyagi; Makoto Takamura; Akiko Matsushita; Asao Nakamura; Akihiko Ueno
Journal:  J Org Chem       Date:  2002-02-08       Impact factor: 4.354

5.  Potentiometric study of molecular complexes of weak acids and bases applied to complexes of alpha-cyclodextrin with para-substituted benzoic acids.

Authors:  K A Connors; S F Lin; A B Wong
Journal:  J Pharm Sci       Date:  1982-02       Impact factor: 3.534

6.  Unusual spectral shifts on fast violet-B and benzanilide: Effect of solvents, pH and beta-cyclodextin.

Authors:  A Antony Muthu Prabhu; R K Sankaranarayanan; S Siva; N Rajendiran
Journal:  Spectrochim Acta A Mol Biomol Spectrosc       Date:  2009-07-01       Impact factor: 4.098

7.  Spectrophotometric study on the thermodynamics of binding of alpha- and beta-cyclodextrin towards some p-nitrobenzene derivatives.

Authors:  Paolo Lo Meo; Francesca D'Anna; Serena Riela; Michelangelo Gruttadauria; Renato Noto
Journal:  Org Biomol Chem       Date:  2003-05-07       Impact factor: 3.876
  7 in total

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