title: Quantum-Dot-Based (Aero)gels: Control of the Optical Properties.
abstract: In this work, we have developed novel hybrid quantum dot gels based on the controllable and reversible assembly of nanoparticles via metal-tetrazole complexation. Combining in one hybrid network nanocrystals of different semiconductors (ZnSe and CdTe) as well as quantum dots of different sizes (green and red emitting CdTe) with different band gaps, we have examined energy relations within these systems and act out a facile route to the color design of the resulting gels. Efficient energy pumping from donor quantum dots to acceptors leads to a remarkable enhancement of the emission intensity of the gel. Furthermore, by integrating three different quantum dot types into one network, we obtained a white-light-emitting aerogel.
authors: Physical Chemistry, TU Dresden, Bergstr. 66b, 01062 Dresden, Germany.
authors: André
authors: A
authors: Wolf
authors: Physical Chemistry, TU Dresden, Bergstr. 66b, 01062 Dresden, Germany.
authors: Vladimir
authors: V
authors: Lesnyak
authors: Physical Chemistry, TU Dresden, Bergstr. 66b, 01062 Dresden, Germany.
authors: Nikolai
authors: N
authors: Gaponik
authors: Physical Chemistry, TU Dresden, Bergstr. 66b, 01062 Dresden, Germany.
authors: Alexander
authors: A
authors: Eychmüller
keywords: (aero)gels; CdTe; ZnSe; emission enhancement; energy transfer; quantum dots; tetrazole capping