Results 291 to 300 of about 1,552,843 (326)

Covalent versus Ionic Bonding in Al-C Clusters.

Journal of Physical Chemistry A, 2017
The low-energy structures of AlnCm (n = 4, 6; m = 1-4) are determined by using the genetic algorithm combined with density functional theory and the QCISD models.
N. Du, Huihui Yang, Hongshan Chen
semanticscholar   +1 more source

Hydrogen bonding in ionic liquids

Chemical Society Reviews, 2015
Ionic liquids (IL) and hydrogen bonding (H-bonding) are two diverse fields for which there is a developing recognition of significant overlap. Doubly ionic H-bonds occur when a H-bond forms between a cation and anion, and are a key feature of ILs. Doubly
Patricia A Hunt, C Ashworth, Richard P Matthews   +2 more
exaly   +2 more sources

Porous liquid zeolites: hydrogen bonding-stabilized H-ZSM-5 in branched ionic liquids.

Nanoscale, 2019
Porous liquids, as a newly emerging type of porous material, have great potential in gas separation and storage. However, the examples and synthetic strategies reported so far likely represent only the tip of the iceberg due to the great difficulty and ...
Peipei Li, Hao Chen, Jennifer A. Schott, Bo Li, Yaping Zheng, S. Mahurin, D. Jiang, Guokai Cui, Xunxiang Hu, Yangyang Wang, Lengwan Li, S. Dai   +11 more
semanticscholar   +1 more source

Ionic Bonding Without Directionality Facilitates Efficient Interfacial Bridging for Perovskite Solar Cells.

Small
Interface passivation through Lewis acid-base coordinate chemistry in perovskite solar cells (PSCs) is a universal strategy to reduce interface defects and hinder ion migration.
Lulan Chen, Letian Chen, Zijing Chen, Jianqiang Wu, Tiantian Lou, Yiming Li, Zhen Zhou, Hongshi Li, Guoran Li, Q. Meng   +9 more
semanticscholar   +1 more source

An Easily Accessible Ionic Aggregation-Induced Emission Luminogen with Hydrogen-Bonding-Switchable Emission and Wash-Free Imaging Ability.

Angewandte Chemie, 2018
Ionic fluorophores are powerful tools for the study of environmental science and bio-imaging. However, traditional ionic dyes usually require long synthetic steps and suffer from a quenching effect caused by aggregation. A water-soluble ionic aggregation-
Yuncong Chen, Weijie Zhang, Zheng Zhao, Yuanjing Cai, Junyi Gong, R. K. Kwok, J. Lam, H. Sung, Ian D. Williams, B. Tang   +9 more
semanticscholar   +1 more source

Self-Healing Gelatin Hydrogels Cross-Linked by Combining Multiple Hydrogen Bonding and Ionic Coordination.

Macromolecular rapid communications, 2017
Self-healing hydrogels have been studied by many researchers via multiple cross-linking approaches including physical and chemical interactions. It is an interesting project in multifunctional hydrogel exploration that a water soluble polymer matrix is ...
Guangzhao Zhang, Lei Lv, Yonghong Deng, Chaoyang Wang   +3 more
semanticscholar   +1 more source

Design and characterization of liquidlike POSS-based hybrid nanomaterials synthesized via ionic bonding and their interactions with CO2.

Langmuir, 2013
Liquidlike nanoparticle organic hybrid materials (NOHMs) were designed and synthesized by ionic grafting of polymer chains onto nanoscale silica units called polyhedral oligomeric silsesquioxane (POSS).
C. Petit, Kunhua Lin, A. Park
semanticscholar   +1 more source

Activating Room-Temperature Phosphorescence of Organic Luminophores via External Heavy-Atom Effect and Rigidity of Ionic Polymer Matrix.

Angewandte Chemie, 2021
Pure organic room-temperature phosphorescence (RTP) materials have attracted wide attention for their easy preparation, low toxicity, and applications in various fields like bioimaging and anti-counterfeiting.
Zi‐Ang Yan, Xiaohan Lin, Siyu Sun, Xiang Ma, H. Tian   +4 more
semanticscholar   +1 more source

Mesoporous Material SBA-15 Modified by Amino Acid Ionic Liquid To Immobilize Lipase via Ionic Bonding and Cross-Linking Method

, 2013
Novel supported task-specific amino acid ionic liquids have been developed for the first time via the ionic-pair coupling of imidazolium cation of the modified mesoporous material SBA-15 with l-lysine anion.
Bin Zou, Yi Hu, Ling Jiang, Ru Jia, He Huang   +4 more
semanticscholar   +1 more source

Moving beyond definitions: what student-generated models reveal about their understanding of covalent bonding and ionic bonding

, 2013
Chemistry students encounter a variety of terms, definitions, and classification schemes that many instructors expect students to memorize and be able to use.
C. Luxford, Stacey Lowery Bretz
semanticscholar   +1 more source