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- Title
The Static Structure and Dynamics of Cadmium Sulfide Nanoparticles within Poly(styrene- block-isoprene) Diblock Copolymer Melts.
- Authors
Jang, Woo‐Sik; Koo, Peter; Bryson, Kyle; Narayanan, Suresh; Sandy, Alec R.; Russell, Thomas P.; Mochrie, Simon G.
- Abstract
The static structure and dynamic behavior of cadmium sulfide nanoparticles suspended in block copolymer matrix are investigated using transmission electron microscopy, small-angle X-ray scattering, and X-ray photon correlation spectroscopy. The transmission electron microscopy study shows that cadmium sulfide nanoparticles are preferentially segregated within the polyisoprene domain of a poly(styrene- block-isoprene) diblock copolymer. For the dynamics study, X-ray photon correlation spectroscopy captures the relaxation process of cadmium sulfide nanoparticles. The measured characteristic relaxation time reveals that the observed dynamics are hyperdiffusive. The characteristic velocity and corresponding activation energy, which are hallmarks of a hyperdiffusive system, are determined from the relationship between the characteristic relaxation time and the wavevector.
- Subjects
CADMIUM; NANOPARTICLES; TRANSMISSION electron microscopy; X-ray scattering; STYRENE
- Publication
Macromolecular Chemistry & Physics, 2016, Vol 217, Issue 4, p591
- ISSN
1022-1352
- Publication type
Article
- DOI
10.1002/macp.201500357