1.
Nanotechnology
; 28(44): 445704, 2017 Nov 03.
Artigo
em Inglês
| MEDLINE
| ID: mdl-28820424
RESUMO
Bovine serum albumin (BSA)-protected gold clusters (atomicity â¼ 20), prepared using a wet chemical route, show strong dipolar radiative transition with a gap energy of 1.93 eV due to the high oscillator strength, as confirmed by the emission studies. Self-arrangement of the clusters with fixed atomicity yields a low dispersive dielectric and electric self-polarization nature. The electrical hysteresis loop measurements returned a remanent polarization of 0.05 µC cm-2, which can be correlated with the dipolar orientation (activation energy â¼ 45.32 meV), originating from the structure-dependent deformation of the charge density.