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.
Venugopal
B R
BR
Department of Chemistry, St. Joseph's College, Lalbagh Road, Bangalore 560 027, India.
Ravishankar
N
N
Perrey
Christopher R
CR
Shivakumara
C
C
Rajamathi
Michael
M