Stability of thin film glasses of toluene and ethylbenzene formed by vapor deposition: an in situ nanocalorimetric study
文献信息
Edgar Leon-Gutierrez, Alfonso Sepúlveda, Gemma Garcia, Maria Teresa Clavaguera-Mora
Vapor deposited thin films (∼100 nm thickness) of toluene and ethylbenzene grown by physical vapor deposition show enhanced stability with respect to samples slowly cooled from the liquid at a rate of 5 K min−1. The heat capacity is measured in situ immediately after growth from the vapor or after re-freezing from the supercooled liquid at various heating rates using quasi-adiabatic nanocalorimetry. Glasses obtained from the vapor have low enthalpies and large heat capacity overshoots that are shifted to high temperatures. The stability is maximized at growth temperatures in the vicinity of 0.8 Tg for both molecules, although glasses of ethylbenzene show superior stabilization. Our data is consistent with previous results of larger organic molecules suggesting a generalized behavior on the stability of organic glasses grown from the vapor. In addition, we find that for the small molecules analyzed here, slowing the growth rate below 0.1 nm s−1 does not result in increased thermodynamic stability.
相关文献
SiO2-protected shell mediated templating synthesis of Fe–N-doped carbon nanofibers and their enhanced oxygen reduction reaction performance
Bi-Cheng Hu, Zhen-Yu Wu, Sheng-Qi Chu, Hong-Wu Zhu, Hai-Wei Liang, Jing Zhang
DOI: 10.1039/C8EE00673C
Facile growth of transition metal hydroxide nanosheets on porous nickel foam for efficient electrooxidation of benzyl alcohol
Xiao-Yuan Wu, Sa-Sa Wang, Weiming Wu
DOI: 10.1039/D1GC02218K
g-C3N4 templated synthesis of the Fe3C@NSC electrocatalyst enriched with Fe–Nx active sites for efficient oxygen reduction reaction
Shaik Gouse Peera, Nam Hoon Kim
DOI: 10.1039/C9TA01837A
Potential and limitations of CsBi3I10 as a photovoltaic material
Paz Sebastia-Luna, María C. Gélvez-Rueda, Chris Dreessen, Michele Sessolo, Ferdinand C. Grozema, Francisco Palazon, Henk J. Bolink
DOI: 10.1039/D0TA02237C
Controllable fabrication of nanostructured materials for photoelectrochemical water splitting via atomic layer deposition
Tuo Wang, Zhibin Luo, Chengcheng Li, Jinlong Gong
DOI: 10.1039/C3CS60370A
Ab initio investigation of the affinity of novel bipyrazolate-based MOFs towards H2 and CO2
J. Baima, R. Macchieraldo, C. Pettinari, S. Casassa
DOI: 10.1039/C4CE01989J
Gated molecular baskets
Keith Hermann, Yian Ruan, Alex M. Hardin, Christopher M. Hadad, Jovica D. Badjić
DOI: 10.1039/C4CS00140K
A water solvent-assisted condensation polymerization strategy of superhydrophobic lignocellulosic fibers for efficient oil/water separation
Lei Kang, Jinpeng Li, Jinsong Zeng, Wenhua Gao, Jun Xu, Zheng Cheng, Kefu Chen, Bin Wang
DOI: 10.1039/C9TA04815D
The impact of oxygen evolution and cation migration on the cycling stability of a Li-rich Li[Li0.2Mn0.6Ni0.1Co0.1]O2 positive electrode
Katarzyna Redel, Andrzej Kulka, Katarzyna Walczak, Camelia N. Borca, Janina Molenda
DOI: 10.1039/D0TA05556E
您可能还喜欢
P11(CAS号:848644-86-0)安全吗?
P11作为一种化学化合物,需要谨慎处理。一般来说,该化合物无毒,但在操作过程中仍需遵循实验室安全规定,避免皮肤接触和吸入。建议在通风良好的环境中操作,并佩戴适当...
氨甲环酸杂质C(CAS号:330838-52-3)通常如何合成?
氨甲环酸杂质C通常通过氨甲环酸的衍生物与环己烯进行缩合反应合成。常见的合成方法包括一步合成法和多步合成法,其中多步合成法可以提高产物的选择性和产率。反应通常在无...
(±)-茉莉酸(CAS号:221682-41-3)通常如何合成?
(±)-茉莉酸的合成通常采用生物合成或者化学合成的方法。化学合成方法中,可以通过2-戊烯-1-醇与环戊酮的缩合反应,再经过氧化反应得到目标产物。该反应需要温和的...
(4S,4'S)-2,2'-(1,1-环己烷二基)双(4-异丙基-4,5-二氢-1,3-噁唑)(CAS号:1373357-00-6)安全吗?
(4S,4'S)-2,2'-(1,1-环己烷二基)双(4-异丙基-4,5-二氢-1,3-噁唑)属于有机化合物,应遵循实验室安全规范。在操作时应佩戴适当的个人防护...
什么是6-苄氧基-5-甲氧基-2-羧基吲哚(CAS号:2495-92-3)?
6-苄氧基-5-甲氧基-2-羧基吲哚是一种有机化合物,分子式为C16H15NO3。它是一种含有苄氧基、甲氧基和羧基官能团的吲哚衍生物。
丙二酸丁酯乙酯(CAS号:17373-84-1)安全吗?
丙二酸丁酯乙酯属于易燃物质,具有一定的毒性。在操作时应佩戴防护眼镜和手套,避免接触皮肤和眼睛。储存时应远离热源和火源,避免阳光直射,以减少火灾和爆炸的风险。
2-碘-3-甲基吡嗪(CAS号:58139-08-5)的市场或研究趋势如何?
2-碘-3-甲基吡嗪作为一种特殊结构的化合物,目前在工业和学术研究中的应用相对有限。然而,随着对特定化学结构及其潜在应用的深入研究,预计未来可能在农药、医药等领...
千层纸素A-7-0-β-D-葡萄糖醛酸苷甲酯(CAS号:82475-01-2)的物理化学性质是什么?
千层纸素A-7-0-β-D-葡萄糖醛酸苷甲酯是一种白色结晶固体,分子量为616.27 g/mol。该化合物在水中溶解度较低,在有机溶剂中溶解度较高。其反应活性主...
什么是7-苄基-4,7-二氮杂螺[2.5]辛烷(CAS号:1222106-45-7)?
7-苄基-4,7-二氮杂螺[2.5]辛烷是一种有机化合物,其结构由一个环状的7-苄基-4,7-二氮杂螺环和一个苯基组成。该化合物的分子式为C14H16N2。它具...
在合成中是否有丁酰胺酸甲酯(CAS号:53171-39-4)的替代品?
丁酰胺酸甲酯的合成中可能的替代品包括其他氨基酸衍生物,如乙酰胺酸甲酯或丙酰胺酸甲酯。这些替代品在某些合成路线中可能更为便利或成本更低。
来源期刊
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.











![4,4-Difluoro-2-methyl-1-{[(2-methyl-2-propanyl)oxy]carbonyl}-L-proline structure 4,4-Difluoro-2-methyl-1-{[(2-methyl-2-propanyl)oxy]carbonyl}-L-proline structure](https://cnstatic.chemtradehub.com/structs/119/1194032-23-9-f426.webp)

![N-[(6-Bromo-3-pyridinyl)methyl]ethanamine structure N-[(6-Bromo-3-pyridinyl)methyl]ethanamine structure](https://cnstatic.chemtradehub.com/structs/120/120740-05-8-ca55.webp)
![4-[(4-Bromophenyl)sulfonyl]thiomorpholine structure 4-[(4-Bromophenyl)sulfonyl]thiomorpholine structure](https://cnstatic.chemtradehub.com/structs/223/223555-81-5-2d67.webp)