5870-37-1Relevant articles and documents
Supramolecular 2D monolayered nanosheets constructed by using synergy of non-covalent interactions
Ding, Qinwen,Dong, Zeyuan,Qi, Shuaiwei,Wang, Wenzhe,Zhang, Chenyang,Zhang, Hongyu,Zhang, Jing
, p. 6272 - 6275 (2021)
Here, a straightforward and rational approach to construct supramolecular assemblies with ordered nanostructures in a two-dimensional arrangement is reported. Taking advantage of the synergistic effect of multiple non-covalent interactions (hydrogen bonding and π-π interactions), the designed molecular monomer has a specific orientation in the self-assembly process, thus realizing two-dimensional control. Supramolecular two-dimensional nanosheets with single-layer thickness and controllable dimensions have been obtained, which can be clearly confirmed using TEM, SEM, AFM and XRD and by comparing with the self-assembled structures of the control system. The strategy of collaborative self-assembly proposed here using multiple non-covalent interactions is expected to be extended to the construction of various kinds of unique supramolecular 2D materials. This journal is
Fabricating Covalent Organic Framework Capsules with Commodious Microenvironment for Enzymes
Andaloussi, Yassin H.,Chen, Yao,Cheng, Peng,Li, Ang,Li, Mingmin,Li, Xia,Ma, Shengqian,Qiao, Shan,Zhang, Zhenjie,Zheng, Yunlong
, p. 6675 - 6681 (2020)
Enzyme immobilization has been demonstrated to be a favorable protocol to promote industrialization of biomacromolecules. Despite tremendous efforts to develop new strategies and materials to realize this process, maintaining enzyme activity is still a fo
Synthesis and antimicrobial activities of 2,5-substituent hydroquinone derivatives
Liu, Hui-Lian,Wang, Qing-Zhong
, p. 5165 - 5167 (2014)
A series of 2,5-substituent hydroquinone derivatives were designed and synthesized. Their structures were identified by elemental analysis, 1H NMR, IR spectra. Their assayed antibacterial (Escherichia coli, Bacillus subtilis) and antifungal (Candida albicans) activities were also evaluated by MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide) method. The results of biological test showed compounds 1 and 10 have favorable antimicrobial activity with MICs of 20.5, 24.6, 18.9 and 28.6 μg/mL against Escherichia coli and Bacillus subtilis, respectively.
Alkylation of methyl 4-chloro-3-oxobutanoate with di- and tribromoalkanes
Ismailov,Ibragimova,Sadykhova,Mamedov,Nagiev,Yusubov
, (2017)
Alkylation of methyl 4-chloro-3-oxobutanoate with 1,2-dibromoethane, 1,3-dibromopropane, and 1,2,3-tribromopropane afforded the corresponding dimethyl 2,5-dioxocyclohexane-1,4-dicarboxylate enol ethers.
Amidation, Esterification, and Thioesterification of a Carboxyl-Functionalized Covalent Organic Framework
Guo, Lei,Jia, Shang,Diercks, Christian S.,Yang, Xuejing,Alshmimri, Sultan A.,Yaghi, Omar M.
, p. 2023 - 2027 (2020)
Three new post-synthetic modification reactions, namely amidation, esterification, and thioesterification, were demonstrated on a novel highly crystalline two-dimensional covalent organic framework (COF), COF-616, bearing pre-installed carboxyl groups. Th
Synthesis and Self-Assembly of Mixed-Graft Block Copolymers
Le, An N.,Liang, Ruiqi,Zhong, Mingjiang
, p. 8177 - 8189 (2019)
Mixed-graft block copolymers (mGBCPs) consist of two or more types of polymeric side chains grafted on a linear backbone in a random, alternating, or pseudo-alternating sequence. They can phase-separate with the backbone serving as the interface of the bl
EUROPIUM BASED METAL ORGANIC FRAMEWORK FOR PALLADIUM SENSING
-
Paragraph 0090, (2021/01/26)
A method of detecting Pd2+ in an aqueous solution is described. The method involves mixing an Eu-based metal organic framework with the aqueous solution and measuring the amount of fluorescence quenching. The fluorescence quenching is specific
Crystal Flexibility Design through Local and Global Motility Cooperation
Wang, Ping,Otake, Ken-ichi,Hosono, Nobuhiko,Kitagawa, Susumu
supporting information, p. 7030 - 7035 (2021/02/26)
Incorporating local mobility into a flexible framework promises to create cooperative properties unattainable in a conventional soft porous crystal. In this study, we propose a design strategy that integrates substituent moieties and a flexible porous crystal framework via intra-framework π–π interactions. This integration not only facilitates framework structural transitions but also gives the porous coordination polymers (PCPs) different guest-free structures that depend on the activation conditions. The incorporated flexibility gives the material the ability to discriminate C6 alkane isomers based on different gate-opening behaviors. Thus, the PCP has potential applications in C6 isomer separation, a critical step in the petroleum refining process to produce gasoline with high octane rating. This strategy, based on ligand designability, offers a new approach to flexible PCP structural and functional design.
Fine-tuning the pore structure of metal-organic frameworks by linker substitution for enhanced hydrogen storage and gas separation
Han, Xiwei,Yang, Xiaoxian,Yu, Chuan,Lu, Shuyan,Pouya, Ehsan Sadeghi,Bai, Peng,Lyu, Jiafei,Guo, Xianghai
, p. 3026 - 3032 (2021/05/03)
The modification of metal-organic frameworks (MOFs) by functionalizing ligands has been investigated for improved properties. In this study, by introducing substituents to the backbone of organic linkers, isostructural dihydroxy-/dialkoxy-functionalized Zr-MOFs were delicately constructed and sophisticatedly characterized for crystallinity, morphology, porosity and structural defects. Pure-component CO2, CH4, N2, and H2adsorption isotherms on the microporous synthesized materials were investigated under the pressure up to 10 MPa at 303 K. By the ideal adsorbed solution theory (IAST) model, enhanced adsorption selectivity towards CO2/N2, CO2/CH4, CH4/N2and CO2/H2binary mixtures was observed compared to the parent material, and dihydroxy functionalization endows the material with high selectivity towards CO2/H2. Moreover, the diethoxy-functionalized material with narrow cavities exhibits improved high pressure H2adsorption due to structural defects and strong overlapping potentials.
An Ultrasensitive and Selective Metal-Organic Framework Chemosensor for Palladium Detection in Water
Helal, Aasif,Nguyen, Ha L.,Al-Ahmed, Amir,Cordova, Kyle E.,Yamani, Zain H.
supporting information, p. 1738 - 1741 (2019/02/12)
A new europium-based metal-organic framework, termed KFUPM-3, was constructed using an allyloxy-functionalized linker. As a result of coordinative interactions between the allyloxy moieties and Pd2+, highly selective changes in both the absorpt