Molecular spectroscopic analysis of nano-chitosan blend as biosensor

被引：49

作者：

Ibrahim, Medhat ^{[1
,2
]}

Mahmoud, Abdel Aziz ^{[1
]}

Osman, Osama ^{[1
]}

Refaat, Ahmed ^{[1
]}

El-Sayed, El-Sayed M. ^{[3
]}

机构：

[1] Natl Res Ctr, Dept Spect, Cairo 12311, Egypt

[2] Jazan Univ, Fac Sci, Dept Phys, Jazan 2097, Saudi Arabia

[3] Ain Shams Univ, Fac Sci, Biophys Branch, Dept Phys, Cairo 11566, Egypt

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2010年 / 77卷 / 04期

关键词：

Chitosan; Starch; Gelatin; FTIR; UV-vis and PM3; GELATIN; FILMS; STARCH;

D O I：

10.1016/j.saa.2010.08.007

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

Chitosan/starch and chitosan/gelatin of different ratios were prepared following casting method. FTIR results indicate the formation of hydrogen bonding which dedicates the prepared blends for interaction with wide range of molecules specially those of NH(2) and COOH terminals. The results obtained with molecular modeling PM3 model are in agreement with spectroscopic data. As a result of increasing starch and gelatin in chitosan blends HOMO-LUMO energy slightly decreased while total dipole moment increased. UV-vis spectroscopy indicated the suitability of chitosan/starch blend as a glycine sensor. Further enhancement in the sensing performance of chitosan/starch blend was achieved by introducing 5 nm TiO(2) into the blend. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：802 / 806

页数：5

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