4.2 Article

Study of interfacial charge transfer in nanosemiconductor-molecule composites

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出版社

WILEY
DOI: 10.1002/poc.3600

关键词

cocoon-like; CT direction; docking; imidazole-Ag4O4 composite; imidazole-metal oxide composites; Nyquist plot; photoelectrode; silver oxide clusters

资金

  1. CSIR [01/(2707)/13EMR-II]
  2. DST [EMR/2014/000094]
  3. DRDO [NRB-213/MAT/10-11]
  4. UGC [36-21/2008]

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Interaction of sol-gel synthesized Ce-Ag-codoped ZnO (CSZO) nanocrystals with (E)-1-(naphthalen-1-yl)-2-styryl-1H-phenanthro[ 9,10-d] imidazole has been analysed. The synthesized nanocrystals and their composites with naphthyl styryl phenanthrimidazole have been characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy, X-ray diffractometry, X-ray photoelectron spectroscopy (XPS) lifetime and Fourier transform infrared spectroscopy and cyclic voltammetry. XPS shows doped silver and cerium in Ag-0 and Ce4+ states, respectively. SEM and TEM images of CSZO nanoparticles show that they appear to be 3D trapezoid and cocoon-like shape. The selected area electron diffraction pattern supports the nanocrystalline character of the synthesized material. The percentages of doping of cerium and silver in CSZO are 0.54 (at.) and 0.34 (at.), respectively. From the energy levels of the materials used in the imidazole-CSZO composite, the dominant CT direction has been analysed. Theoretical investigation shows that the binding energy and energy gap of the imidazole composites are highly dependent on the nature of the silver oxide cluster and that charge transfer in the imidazole-Ag4O4 composite is faster than the same in other composites. Molecular docking technique has also been carried out to understand the imidazole-DNA interactions. Copyright (C) 2016 John Wiley & Sons, Ltd.

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