Title
Orientation of Chiral Schiff Base Metal Complexes Involving Azo-Groups for Induced CD on Gold Nanoparticles by Polarized UV Light Irradiation.
Abstract
In this study, we report the synthesis, characterization, and chiroptical properties of azo-group-containing chiral salen type Schiff base Ni(II), Cu(II), and Zn(II) complexes absorbed on gold nanoparticles (AuNPs) of 10 nm diameters. Induced circular dichroism (CD) around the plasmon region from the chiral species weakly adsorbed on the surface of AuNP were observed when there were appropriate dipole-dipole interactions at the initial states. Spectral changes were also observed by not only cis-trans photoisomerization of azo-groups but also changes of orientation due to Weigert effect of azo-dyes after linearly polarized UV light irradiation. Spatial features were discussed based on dipole-dipole interactions mainly within an exciton framework.
Year
DOI
Venue
2019
10.3390/sym11091094
SYMMETRY-BASEL
Keywords
Field
DocType
chirality,azobenzene,photo-isomerization,Weigert effect,Schiff base complexes,gold nanoparticles,time-dependent density functional theory (TD-DFT)
Chirality (chemistry),Photoisomerization,Schiff base,Colloidal gold,Mathematical analysis,Circular dichroism,Azobenzene,Metal,Photochemistry,Mathematics,Plasmon
Journal
Volume
Issue
Citations 
11
9
0
PageRank 
References 
Authors
0.34
0
3
Name
Order
Citations
PageRank
Nobumitsu Sunaga100.34
Tomoyuki Haraguchi200.34
Takashiro Akitsu312.32