(420f) The Chiral Self- Assembly: From Chiral CdTe Nanoparticles to Chiral CdTe Nanostructures

Abstract:

Self-assembly of
semiconductor nanoparticles (NPs) have been proved a facile method for reproducibly
fabricating large-scale nanoelectronics or nanophotonics device arrays. Among others, chiral assembly by engineering metamterials,
are demonstrated unprecedented photoelectric and electricmegnetic
properties, which cannot produce by naturally materials. Taking advantage of
the chirality of molecules in the assembly of
inorganic NPs, we can obtain novel and functional chiral
nanostuctures. Current work are focusing on
understanding the surface structure of nanoparticles
and assembly of chiral amino acids (cysteine) stabilized CdTe nanoparticles by adjusting the weak interaction forces,
such as electrostatic interactions, hydrogen bonding, dipole-dipole
interactions and hydrophobic force, between nanoparticles.
Our research will facilitate the advance of semiconductor nanostructure and
have great potential application in development of new photoelectric devices.

Figure 1  A), B), C) TEM
of CdTe chiral
nanostructure assembled by L-cysteine (cys) capped CdTe NPs. D), E), F)
TEM of CdTe chiral
nanostructure assembled by D-cys capped CdTe NPs. G) CD spectra of (D-, L-) cys
capped CdTe NPs. H) CD spectra of CdTe
chiral nanostructure assembled by (D-,L-) cys  capped CdTe NPs.