Molecular spectroscopic analysis of nano-chitosan blend as biosensor
Ibrahim, Medhat; Mahmoud, Abdel Aziz; Osman, Osama; Refaat, Ahmed; Soliman, El-Sayed;
Abstract
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 NH₂ 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 TiO₂ into the blend.
Other data
| Title | Molecular spectroscopic analysis of nano-chitosan blend as biosensor | Authors | Ibrahim, Medhat; Mahmoud, Abdel Aziz; Osman, Osama; Refaat, Ahmed; Soliman, El-Sayed | Keywords | Chitosan;Starch;Gelatin;FTIR;UV-vis and PM3;GELATIN;FILMS;STARCH | Issue Date | Nov-2010 | Publisher | PERGAMON-ELSEVIER SCIENCE LTD | Journal | Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy | Volume | 77 | Issue | 4 | Start page | 802 | End page | 806 | ISSN | 1386-1425 | DOI | 10.1016/j.saa.2010.08.007 | PubMed ID | 20801710 | Scopus ID | 2-s2.0-77957294450 | Web of science ID | WOS:000283906100013 |
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