نتایج جستجو برای: mechanochemistry

تعداد نتایج: 497  

Journal: :Beilstein Journal of Organic Chemistry 2017

2017
Joel M. Andersen James Mack

Mechanochemistry continues to reveal new possibilities in chemistry including the opportunity for “greening” reactions. Nevertheless, a clear understanding of the energetic transformations within mechanochemical systems remains elusive. We employed a uniquely modified ball mill and strategically chosen Diels–Alder reactions to evaluate the role of several ball-milling variables. This revealed t...

Journal: :Ultrasonics Sonochemistry 1995

2017
Tadej Rojac Primož Šegedin Marija Kosec

Since the first laboratory experiments of M. Carey Lea and the original definition by F. W. Ostwald at the end of the 19th century, mechanochemistry, a field treating chemical changes induced in substances as a result of applied mechanical stress, has been evolved as an important area of chemistry from the viewpoint of both the fundamental research and applications (Takacs, 2004; Boldyrev & Tka...

2015
Kuo-Ching Mei Yukuang Guo Jie Bai Pedro M. Costa Houmam Kafa Andrea Protti Robert C. Hider Khuloud T. Al-Jamal

In this study, we propose an organic solvent-free, one-step mechanochemistry approach to engineer water-dispersible graphene oxide/superparamagnetic iron oxide (GO/SPIOs) hybrids, for biomedical applications. Although mechanochemistry has been proposed in the graphene field for applications such as drug loading, exfoliation or polymer-composite formation, this is the first study to report mecha...

Journal: :Angewandte Chemie 2009
Jordi Ribas-Arino Motoyuki Shiga Dominik Marx

The time is ripe: A general theoretical framework based on force-transformed potential energy surfaces rationalizes the intriguing results of recent experiments in the emerging field of covalent mechanochemistry.

2017
Zhenghui Liu Tadayuki Yago Nan Zhang Sumith R Panicker Ying Wang Longbiao Yao Padmaja Mehta-D'souza Lijun Xia Cheng Zhu Rodger P McEver

Circulating neutrophils must avoid premature activation to prevent tissue injury. The leukocyte adhesion receptor L-selectin forms bonds with P-selectin glycoprotein ligand-1 (PSGL-1) on other leukocytes and with peripheral node addressin (PNAd) on high endothelial venules. Mechanical forces can strengthen (catch) or weaken (slip) bonds between biological molecules. How these mechanochemical pr...

Journal: :Journal of the American Chemical Society 2014

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