The static structure and dynamics of cadmium sulfide nanoparticles within poly(styrene-block-isoprene) diblock copolymer melts

Journal Article · Sun Dec 20 00:00:00 EST 2015 · Macromolecular Chemistry and Physics

DOI:https://doi.org/10.1002/macp.201500357· OSTI ID:1342384

Jang, Woo -Sik ^[1]; Koo, Peter ^[1]; Bryson, Kyle ^[2]; Narayanan, Suresh ^[3]; Sandy, Alec R. ^[3]; Russell, Thomas P. ^[2]; Mochrie, Simon G. ^[1]

---

1. Yale Univ., New Haven, CT (United States)
2. Univ. of Massachusetts, Amherst, MA (United States)
3. Argonne National Lab. (ANL), Argonne, IL (United States)

Here, 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 micro- scopy 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.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES)
• Grant/Contract Number: AC02-06CH11357
• OSTI ID: 1342384
• Journal Information: Macromolecular Chemistry and Physics, Vol. 217, Issue 4; ISSN 1022-1352
• Publisher: Wiley
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE