TY  - JOUR
A1  - Kathrein, Christine C.
A1  - Pester, Christian
A1  - Ruppel, Markus
A1  - Jung, Maike
A1  - Zimmermann, Marc
A1  - Böker, Alexander
T1  - Reorientation mechanisms of block copolymer/CdSe quantum dot composites under application of an electric field
T2  - Soft matter
N2  - Time- and temperature-resolved in situ birefringence measurements were applied to analyze the effect of nanoparticles on the electric field-induced alignment of a microphase separated solution of poly(styrene)-block-poly(isoprene) in toluene. Through the incorporation of isoprene-confined CdSe quantum dots the reorientation behavior is altered. Particle loading lowers the order-disorder transition temperature, and increases the defect density, favoring nucleation and growth as an alignment mechanism over rotation of grains. The temperature dependent alteration in the reorientation mechanism is analyzed via a combination of birefringence and synchrotron SAXS. The detailed understanding of the effect of nanoparticles on the reorientation mechanism is an important prerequisite for optimization of electricfield-induced alignment of block copolymer/nanoparticle composites where the block copolymer guides the nanoparticle self-assembly into anisotropic structures.
Y1  - 2016
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/45742
SN  - 1744-683X
SN  - 1744-6848
VL  - 12
SP  - 8417
EP  - 8424
PB  - Royal Society of Chemistry
CY  - Cambridge
ER  -