Glassy dynamics of sorbitol solutions at terahertz frequencies
Literature Information
Juraj Sibik, Evgenyi Y. Shalaev, J. Axel Zeitler
The absorption spectra of D-sorbitol and a range of its concentrated aqueous solutions were studied by terahertz spectroscopy over the temperature interval of 80 K < T < 310 K. It is shown that the slow-down of molecules at around the glass transition temperature, Tg, dramatically influences the thermal dependence of the absorption at terahertz frequencies. Furthermore, two different absorption regimes are revealed below Tg: at temperatures well below Tg, the absorption resembles the coupling of terahertz radiation to the vibrational density of states (VDOS); above these temperatures, between 160 K and Tg, in the sample of pure sorbitol and the sample of a solution of 70 wt% sorbitol in water, another type of absorption is observed at terahertz frequencies. Several possibilities of the physical origin of this absorption are discussed and based on the experimental data this process is tentatively assigned to the Johari–Goldstein β-relaxation processes shifting to lower frequencies at temperatures below Tg leaving behind a spectrum largely dominated by losses into the VDOS.
Related Literature
The role of solute polarity on methanol–silica interfacial solvation: a molecular dynamics study
Kezhou Ren, Yong-Peng Wang, Shule Liu
DOI: 10.1039/D0CP04422A
Polarization consistent basis sets using the projector augmented wave method: a renovation brought by PAW into Gaussian basis sets
Masaya Hagai, Xiao-Gen Xiong
DOI: 10.1039/D0CP05229A
Integrative structural modeling of a multidomain polo-like kinase
Hao Ruan, Janna Kiselar, Weilin Zhang, Siyang Li, Ruoyao Xiong, Sichun Yang
DOI: 10.1039/D0CP05030J
Tracing the driving forces responsible for the remarkable infectivity of 2019-nCoV: 1. Receptor binding domain in its bound and unbound states
Miaoren Xia
DOI: 10.1039/D0CP04435K
Influence of the Coriolis effect on the properties of scattering resonances in symmetric and asymmetric isotopomers of ozone
Igor Gayday, Elizaveta Grushnikova, Dmitri Babikov
DOI: 10.1039/D0CP05060A
Local structure of a highly concentrated NaClO4 aqueous solution-type electrolyte for sodium ion batteries
Ryo Sakamoto, Maho Yamashita, Kosuke Nakamoto, Yongquan Zhou, Nobuko Yoshimoto, Kenta Fujii, Toshio Yamaguchi
DOI: 10.1039/D0CP04376A
Born–Oppenheimer molecular dynamics simulations on structures of high-density and low-density water: a comparison of the SCAN meta-GGA and PBE GGA functionals
Mengli Li, Lu Chen, Lirong Gui, Shuo Cao, Di Liu, Gang Zhao, Mingcui Ding, Jinliang Yan, Dehua Wang
DOI: 10.1039/D0CP05707J
A quantum-based molecular dynamics study of the ICM-102/HNO3 host–guest reaction at high temperatures
Yiwen Xiao, Lang Chen, Deshen Geng, Kun Yang, Jianying Lu, Junying Wu
DOI: 10.1039/D0CP04511J
How external perturbations affect the chemoselectivity of substrate activation by cytochrome P450 OleTJE
Abayomi S. Faponle
DOI: 10.1039/D0CP05169A
Accurate equilibrium structure of 3-aminophthalimide from gas electron diffraction and coupled-cluster computations and diverse structural effects due to electron density transfer
Nina I. Giricheva, Georgiy V. Girichev
DOI: 10.1039/D0CP04423G
You might also like
Are there alternatives to 1-(4-Chlorophenyl)-N-hydroxymethanimine (CAS: 3848-36-0) in synthesis?
When considering alternatives to 1-(4-Chlorophenyl)-N-hydroxymethanimine (CAS: 3...
How should (1R,9S,10S,12S,14E,16S,19R,20R,21S,22R)-3,9,21-Trihydroxy-5,10,12,14,16,20,22-heptamethyl-23,24-dioxatetracyclo[17.3.1.1~6,9~.0~2,7~]tetracosa-2,5,7,14-tetraen-4-one (CAS: 183202-73-5) be stored?
This compound should be stored in a cool, dry place away from direct sunlight. I...
How is 3-(4-Bromophenyl)-5-(2-fluorophenyl)-1,2,4-oxadiazole (CAS: 419553-16-5) typically synthesized?
3-(4-Bromophenyl)-5-(2-fluorophenyl)-1,2,4-oxadiazole is synthesized through a m...
How is 5-Chloro-2-(4-chlorophenyl)-4-methyl-6-[3-(1-piperidinyl)propoxy]pyrimidine (CAS: 1639220-19-1) typically synthesized?
5-Chloro-2-(4-chlorophenyl)-4-methyl-6-[3-(1-piperidinyl)propoxy]pyrimidine (CAS...
What industries use 2-Chloro-4-(difluoromethoxy)pyridine (CAS: 1206978-15-5)?
2-Chloro-4-(difluoromethoxy)pyridine is used in the pharmaceutical industry for ...
What regulatory guidelines apply to 3-Chloro-6-methylpyridazine (CAS: 1121-79-5)?
3-Chloro-6-methylpyridazine (CAS: 1121-79-5) is classified under the Globally Ha...
Are there alternatives to Methyl 4,5-dimethyl-2-nitrobenzoate in synthesis?
Several alternatives can be used in the synthesis of Methyl 4,5-dimethyl-2-nitro...
Are there alternatives to (2E,2'E)-3,3'-(1,4-Phenylene)bisacrylaldehyde in synthesis?
Alternatives to (2E,2'E)-3,3'-(1,4-Phenylene)bisacrylaldehyde include other acry...
What is 3-Amino-5-chloropyridin-2-ol hydrochloride (CAS: 1261906-29-9)?
3-Amino-5-chloropyridin-2-ol hydrochloride is an organic compound with the CAS n...
What precautions should be taken when handling 6,7-Difluoro-2,3-dihydro-4H-chromen-4-one (CAS: 1092349-93-3)?
When handling 6,7-Difluoro-2,3-dihydro-4H-chromen-4-one, it is essential to wear...
Source Journal
Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.












![[4-(Isobutyrylamino)phenyl]boronic acid structure [4-(Isobutyrylamino)phenyl]boronic acid structure](https://static.chemtradehub.com/structs/874/874219-50-8-6ab5.webp)

