http://hdl.handle.net/20.500.12128/21888
Tytuł: | Complex reorientation dynamics of sizable glass-formers with polar rotors revealed by dielectric spectroscopy |
Autor: | Rams-Baron, Marzena Yao, Beibei Cheng, Shinian Dulski, Mateusz Paluch, Marian |
Słowa kluczowe: | sizable glass-formers; dielectric measurements; dielectric spectroscopy; polar rotors revealed |
Data wydania: | 2021 |
Źródło: | "The Journal of Physical Chemistry Letters" (2021), iss. 0, s. 11303-11307 |
Abstrakt: | We present the results of dielectric measurements for three sizable glass-formers with identical nonpolar cores linked to various dipole-labeled rotors that shed new light on the picture of reorientation of anisotropic systems with significant moment of inertia revealed by broadband dielectric spectroscopy. The dynamics of sizable glass-formers formed by partially rigid molecular cores linked to small polar rotors in many respects differs from that of typical glass-formers. For instance, the extraordinarily large prefactors (τ0 > 10−12 s) in the Vogel− Fulcher−Tammann equation were found. The rich and highly diverse relaxation pattern was governed by the location of a dipole, its ability to rotate freely, and the degree of coupling to the motion of the entire sizable system. |
URI: | http://hdl.handle.net/20.500.12128/21888 |
DOI: | 10.1021/acs.jpclett.1c03088 |
ISSN: | 1948-7185 |
Pojawia się w kolekcji: | Artykuły (WNŚiT) |
Plik | Opis | Rozmiar | Format | |
---|---|---|---|---|
Rams_Baron_complex_reorientation_dynamics.pdf | 1,65 MB | Adobe PDF | Przejrzyj / Otwórz |
Uznanie Autorstwa 3.0 Polska Creative Commons