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Glucose interaction with Au, Ag, and Cu clusters: Theoretical investigation

Jamshidi, Z ; Sharif University of Technology | 2013

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  1. Type of Document: Article
  2. DOI: 10.1002/qua.24122
  3. Publisher: 2013
  4. Abstract:
  5. Interactions of α-D-glucose with gold, silver, and copper metal clusters are studied theoretically at the density functional theory (CAM-B3LYP) and MP2 levels of theory, using trimer clusters as simple catalytic models for metal particles as well as investigating the effect of cluster charge by studying the interactions of cationic and anionic gold clusters with glucose. The bonding between α-D-glucose and metal clusters occurs by two major bonding factors; the anchoring of M atoms (M = Cu, Ag, and Au) to the O atoms, and the unconventional M.H-O hydrogen bond. Depending on the charge of metal clusters, each of these bonds contributes significantly to the complexation. Binding energy calculations indicate that the silver cluster has the lowest and gold cluster has the highest affinity to interact with glucose. Natural bond orbital analysis is performed to calculate natural population analysis and charge transfers in the complexes. Quantum theory of atoms in molecules was also applied to interpret the nature of bonds
  6. Keywords:
  7. Biosensor ; Metal clusters ; Anionic gold clusters ; Metal cluster ; Metal particle ; Natural bond orbital analysis ; Natural population analysis ; Quantum theory of atoms in molecules ; Theoretical investigations ; Trimer clusters ; Binding energy ; Biosensors ; Charge transfer ; Complexation ; Density functional theory ; Glucose ; Gold ; Hydrogen bonds ; Metals ; Quantum theory ; Gold compounds
  8. Source: International Journal of Quantum Chemistry ; Volume 113, Issue 8 , 2013 , Pages 1062-1070 ; 00207608 (ISSN)
  9. URL: http://onlinelibrary.wiley.com/doi/10.1002/qua.24122/abstract