کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1237541 | 968898 | 2008 | 8 صفحه PDF | دانلود رایگان |

The inclusion complexes of β-cyclodextrin (β-CD) with l-tyrosine (l-TYN) were investigated by using spectrophotometers. The absorption and fluorescence enhancement occurs with β-CD and l-TYN forms 1:1 inclusion complex. The unusual blue shift of hydroxyl ion in the β-CD medium confirms OH groups present in the interior part of the β-CD cavity and –COOH group present in the upper part of the β-CD cavity. A mechanism is proposed to explain inclusion process. The inclusion interaction was examined and the thermodynamic parameters of inclusion process ΔG, ΔH and ΔS were determined. The results indicated that the inclusion process was an exergonic and spontaneous process. Stable solid inclusion complexes were established and characterized by FT-IR, scanning electron microscope (SEM) methods.
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 71, Issue 1, 1 November 2008, Pages 125–132