Please use this identifier to cite or link to this item: http://nopr.niscair.res.in/handle/123456789/7824
Full metadata record
DC FieldValueLanguage
dc.contributor.authorPrabhu, A Antony Muthu-
dc.contributor.authorVenkatesh, G-
dc.contributor.authorSankaranarayanan, R K-
dc.contributor.authorSiva, S-
dc.contributor.authorRajendiran, N-
dc.date.accessioned2010-04-05T07:53:59Z-
dc.date.available2010-04-05T07:53:59Z-
dc.date.issued2010-04-
dc.identifier.urihttp://hdl.handle.net/123456789/7824-
dc.description407-417en_US
dc.description.abstractThe spectral characteristics of 4-amino-2′,3-dimethylazobenzene (GBC), 4-aminoazobenzene (AAB) and azobenzene (AB) have been studied in various solvents, varying hydrogen ion concentrations and in -cyclodextrin (-CD). The inclusion complexes of GBC, AAB and AB with -CD have been analysed by UV-visible, fluorometry, FT-IR, 1H NMR, SEM and Cache-DFT methods. The solvent study shows that the azo form is present only in GBC and AAB molecules. No significant spectral difference is observed in GBC indicating that the presence of two methyl groups does not effectively change the spectral behaviour as compared to that of AAB. In acid solutions, unusual red shift is observed in the monocation suggesting that the azonium-ammonium tautomer is present in both molecules. The absorption maximum at ~500 nm, is due to the azonium cation while that at ~320 nm originates from the ammonium cation. In -CD solutions, the increase in the fluorescence intensity and large bathochromic shift in S1 state indicates that both GBC and AAB form 2:2 inclusion complex, whereas AB forms 1:1 inclusion complex. Also, head-to-head dimer is formed in both the aminoazobenzene compounds.en_US
dc.language.isoen_USen_US
dc.publisherCSIRen_US
dc.sourceIJC-A Vol.49A(04) [April 2010]en_US
dc.subjectSpectral studiesen_US
dc.subjectTautomerismen_US
dc.subjectInclusion compoundsen_US
dc.subjectAzo compoundsen_US
dc.subjectAzobenzenesen_US
dc.subjectAminoazobenzenesen_US
dc.subjectCyclodextrinsen_US
dc.titleAzonium-ammonium tautomerism and inclusion complexation of 4-amino-2′, 3-dimethylazobenzeneen_US
dc.typeArticleen_US
Appears in Collections:IJC-A Vol.49A(04) [April 2010]

Files in This Item:
File Description SizeFormat 
IJCA 49A(4) 407-417.pdf568.88 kBAdobe PDFView/Open


Items in NOPR are protected by copyright, with all rights reserved, unless otherwise indicated.