@article{a1103ebf44eb41f993c897f16c544899,
title = "Effects of Tailored Dispersity on the Self-Assembly of Dimethylsiloxane-Methyl Methacrylate Block Co-Oligomers",
abstract = "The effect of dispersity on block polymer self-assembly was studied in the monodisperse limit using a combination of synthetic chemistry, matrix-assisted laser desorption ionization spectroscopy, and small-angle X-ray scattering. Oligo(methyl methacrylate) (oligoMMA) and oligo(dimethylsiloxane) (oligoDMS) homopolymers were synthesized by conventional polymerization techniques and purified to generate an array of discrete, semidiscrete, and disperse building blocks. Coupling reactions afforded oligo(DMS-MMA) block polymers with precisely tailored molar mass distributions spanning single molecular systems (D= 1.0) to low-dispersity mixtures (d ≈ 1.05). Discrete materials exhibit a pronounced decrease in domain spacing and sharper scattering reflections relative to disperse analogues. The order-disorder transition temperature (TODT) also decreases with increasing dispersity, suggesting stabilization of the disordered phase, presumably due to the strengthening of composition fluctuations at the low molar masses investigated.",
author = "Bernd Oschmann and Jimmy Lawrence and Schulze, {Morgan W.} and Ren, {Jing M.} and Athina Anastasaki and Yingdong Luo and Nothling, {Mitchell D.} and Pester, {Christian W.} and Delaney, {Kris T.} and Connal, {Luke A.} and McGrath, {Alaina J.} and Clark, {Paul G.} and Bates, {Christopher M.} and Hawker, {Craig J.}",
note = "Funding Information: This work was supported primarily by the National Science Foundation (MRSEC program DMR 1121053) and the Dow Chemical Company. B.O. and C.W.P. acknowledge the Alexander von Humboldt-Foundation for a Feodor Lynen Research Fellowship. A. A. is grateful to the European Union's Horizon 2020 research and innovation program for a Marie Curie Global Fellowship (657650) and the California NanoSystems Institute for an Elings Prize Fellowship. J.M.R. thanks the Victorian Endowment for Science, Knowledge and Innovation (VESKI) for a postdoctoral fellowship. M.D.N. acknowledges a John Stocker Scholarship and an Endeavour Research Fellowship. This research used data acquired at Beamline 7.3.3 of the Advanced Light Source which is a DOE Office of Science User Facility under contract no. DE-AC02-05CH11231. Additional SAXS data were acquired on beamline 1-5 at the Stanford Synchrotron Radiation Lightsource (SSRL) with the assistance of Gabriel Sanoja, Anastasia Patterson, Nicole Michenfelder-Schauser, and Emily Davidson. Publisher Copyright: {\textcopyright} 2017 American Chemical Society.",
year = "2017",
month = jul,
day = "18",
doi = "10.1021/acsmacrolett.7b00262",
language = "English (US)",
volume = "6",
pages = "668--673",
journal = "ACS Macro Letters",
issn = "2161-1653",
publisher = "American Chemical Society",
number = "7",
}