Layered double hydroxide-CdSe quantum dot composites through colloidal processing: effect of host matrix-nanoparticle interaction on optical behavior.
Layered double hydroxide (LDH)-monodispersed 4-nm CdSe nanoparticle composites were prepared through restacking of layers of colloidally dispersed delaminated LDH in the presence of CdSe nanoparticles in 1-butanol. The composites exhibit a blue shift for CdSe absorption, which increases with a decrease in nanoparticle content. The observed blue shift is due to the interaction of the quantum dots with the LDH layers, which leads to surface modification of the nanoparticles.
Department of Chemistry, St. Joseph's College, Lalbagh Road, Bangalore 560 027, India.
B R
BR
Venugopal
N
N
Ravishankar
Christopher R
CR
Perrey
C
C
Shivakumara
Michael
M
Rajamathi