Molecular View on Supramolecular Chain and Association Dynamics
Molecular View on Supramolecular Chain and Association Dynamics
The chain and association dynamics of supramolecular polymer ensembles decisively determines their properties. Using neutron spin echo (NSE) spectroscopy we present molecular insight into the space and time evolution of this dynamics. Studying a well characterized ensemble of linearly associating te...
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Personal Name(s): | Monkenbusch, M. |
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Krutyeva, M. / Pyckhout-Hintzen, W. / Antonius, W. / Hövelmann, C. H. / Allgaier, J. / Brás, A. (Corresponding author) / Farago, B. / Wischnewski, A. / Richter, D. | |
Contributing Institute: |
Neutronenstreuung; JCNS-1 |
Published in: | Physical review letters, 117 (2016) 14, S. 147802 |
Imprint: |
College Park, Md.
APS
2016
|
DOI: |
10.1103/PhysRevLett.117.147802 |
DOI: |
10.34734/FZJ-2016-07222 |
Document Type: |
Journal Article |
Research Program: |
Molecular Information Processing in Cellular Systems Multilevel Brain Organization and Variability Life Sciences – Building Blocks of Life: Structure and Function Jülich Centre for Neutron Research (JCNS) (FZJ) |
Link: |
OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.34734/FZJ-2016-07222 in citations.
The chain and association dynamics of supramolecular polymer ensembles decisively determines their properties. Using neutron spin echo (NSE) spectroscopy we present molecular insight into the space and time evolution of this dynamics. Studying a well characterized ensemble of linearly associating telechelic poly(ethylene glycol) melts carrying triple H-bonding end groups, we show that H-bond breaking significantly impacts the mode spectrum of the associates. The breaking affects the mode contributions and not the relaxation times as was assumed previously. NSE spectra directly reveal the so far intangible H-bond lifetimes in the supramolecular melt and demonstrate that for both the microscopic and the macroscopic dynamics of the supramolecular ensemble the instantaneous average of the Mw distribution governs the system response at least as long as the Rouse picture applies. |