![4-Chloro-3-(trifluoromethyl)-1H-pyrrolo[2,3-b]pyridine structure](https://static.chemtradehub.com/structs/869/869335-75-1-a9d0.webp "4-Chloro-3-(trifluoromethyl)-1H-pyrrolo[2,3-b]pyridine structure")
4-Chloro-3-(trifluoromethyl)-1H-pyrrolo[2,3-b]pyridine
CAS Number:
869335-75-1
Molecular Formula:
C8H4ClF3N2
Raising glass transition temperature of polymer nanofilms as a function of negative interface energy
Literature Information
Publication Date
2019-02-07
DOI
10.1039/C8CP07267A
Impact Factor
3.676
Authors
Xue Yao, Yaru Wang, Xingyou Lang, Yongfu Zhu, Qing Jiang
View Original
Abstract
Based on a thermodynamic approach, glass transition temperature (Tg) of substrate-supported polymer nanofilms (s-PNFs) is investigated for carbon-chain polymers, taking the role of the interface energy into consideration. Relative to the Tg depression, originating from the positive interface energy due to the weak interfacial van der Waals interactions, the Tg raise is reversely induced by the negative interface energy, induced by the hydrogen bonds formed between the side-chains of polymers and the surface hydroxyl groups of substrates. Moreover, the Tg raise can be reinforced for s-PNFs with simple side-chains. The model predictions agree well with available experimental or simulation results.
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Source Journal
Physical Chemistry Chemical Physics
CiteScore:
5.5
Self-citation Rate:
10.3%
Articles per Year:
3036
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.
Recommended Compounds
![Methyl 4-({[(2-methyl-2-propanyl)oxy]carbonyl}amino)bicyclo[2.2.2]octane-1-carboxylate structure](https://static.chemtradehub.com/structs/943/943845-74-7-b7e5.webp "Methyl 4-({[(2-methyl-2-propanyl)oxy]carbonyl}amino)bicyclo[2.2.2]octane-1-carboxylate structure")
Methyl 4-({[(2-methyl-2-propanyl)oxy]carbonyl}amino)bicyclo[2.2.2]octane-1-carboxylate
CAS Number:
943845-74-7
Molecular Formula:
C15H25NO4
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