365564-05-2Relevant articles and documents
A Heteromeric Carboxylic Acid Based Single-Crystalline Crosslinked Organic Framework
Liang, Rongran,Samanta, Jayanta,Shao, Baihao,Zhang, Mingshi,Staples, Richard J.,Chen, Albert D.,Tang, Miao,Wu, Yuyang,Aprahamian, Ivan,Ke, Chenfeng
, p. 23176 - 23181 (2021)
The development of large pore single-crystalline covalently linked organic frameworks is critical in revealing the detailed structure-property relationship with substrates. One emergent approach is to photo-crosslink hydrogen-bonded molecular crystals. In
Preparation of few-layer two-dimensional polymers by self-assembly of bola-amphiphilic small molecules
Zhang, Na,Wang, Taisheng,Bu, Xiaohai,Wu, Qiong,Zhang, Zewu
, p. 1748 - 1755 (2019)
Two bola-amphiphilic small molecules, based on the diphenylanthracene skeleton structure, namely, BASM-1 and its functionalized small molecule BASM-2, were designed and synthesized. The self-assembly behavior and mechanism of these two molecules in aqueou
Optically active covalent organic frameworks and hyperbranched polymers with chirality induced by circularly polarized light
Bando, Masayoshi,Harada, Takunori,Naga, Naofumi,Nakano, Tamaki,Shimoda, Shuhei,Song, Zhiyi,Wang, Qingyu,Wang, Yuting,Yazawa, Koji
, p. 7681 - 7684 (2021)
Axial chirality was induced by circularly polarized light to covalent organic frameworks as well as hyperbranched polymers composed of bezene-1,3,5-triyl core units and oligo(benzene-1,4-diyl) as linker units where variation in induction efficiency was ra
Synthesis and Characterization of π-Extended Triangulene
Mishra, Shantanu,Beyer, Doreen,Eimre, Kristjan,Liu, Junzhi,Berger, Reinhard,Gr?ning, Oliver,Pignedoli, Carlo A.,Müllen, Klaus,Fasel, Roman,Feng, Xinliang,Ruffieux, Pascal
, p. 10621 - 10625 (2019)
The electronic and magnetic properties of nanographenes strongly depend on their size, shape and topology. While many nanographenes present a closed-shell electronic structure, certain molecular topologies may lead to an open-shell structure. Triangular-s
Water-Soluble hyperbranched polyelectrolytes with high fluorescence quantum yield: Facile synthesis and selective chemosensor for Hg2+and Cu2+ ions
Biqing, Bao,Yuwen, Lihui,Zhan, Xiaowei,Wang, Lianhui
, p. 3431 - 3439 (2010)
New water-soluble hyperbranched polyfluorenes bearing carboxylate side chains have been synthesized by the simple "A2 + B2 + C3" protocol based on Suzuki coupling polymerization. The linear polyfluorene analogue LPFA was also synthesized for comparative i
Enhancing Hydrogen Evolution Activity of Au(111) in Alkaline Media through Molecular Engineering of a 2D Polymer
Abufager, Paula,Alexa, Patrick,Busnengo, Heriberto Fabio,Grumelli, Doris,Gutzler, Rico,Haase, Frederik,Kern, Klaus,Lombardi, Juan Manuel,Lotsch, Bettina V.,Vyas, Vijay S.
, p. 8411 - 8415 (2020)
The electrochemical splitting of water holds promise for the storage of energy produced intermittently by renewable energy sources. The evolution of hydrogen currently relies on the use of platinum as a catalyst—which is scarce and expensive—and ongoing r
Photo-induced thiolate catalytic activation of inert Caryl-hetero bonds for radical borylation
K?nig, Burkhard,Wang, Hua,Wang, Shun
supporting information, p. 1653 - 1665 (2021/06/17)
Substantial effort is currently being devoted to obtaining photoredox catalysts with high redox power. Yet, it remains challenging to apply the currently established methods to the activation of bonds with high bond dissociation energy and to substrates with high reduction potentials. Herein, we introduce a novel photocatalytic strategy for the activation of inert substituted arenes for aryl borylation by using thiolate as a catalyst. This catalytic system exhibits strong reducing ability and engages non-activated Caryl–F, Caryl–X, Caryl–O, Caryl–N, and Caryl–S bonds in productive radical borylation reactions, thus expanding the available aryl radical precursor scope. Despite its high reducing power, the method has a broad substrate scope and good functional-group tolerance. Spectroscopic investigations and control experiments suggest the formation of a charge-transfer complex as the key step to activate the substrates.
Novel compound and organic light emitting device comprising the same
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Paragraph 0270-0274, (2021/07/27)
The present invention provides a novel compound and an organic light emitting device including the same.
Metal-Stabilized Boronate Ester Cages
Fadaei-Tirani, Farzaneh,Giraldi, Erica,Scopelliti, Rosario,Severin, Kay
supporting information, p. 10873 - 10879 (2021/08/16)
Molecular cages with arylboronate ester caps at the vertices are described. The cages were obtained by metal-templated polycondensation reactions of a tris(2-formylpyridine oxime) ligand with arylboronic acids. Suited templates are triflate or triflimide salts of ZnII, FeII, CoII, or MnII. In the products, the metal ions are coordinated internally to the pyridyl and oximato N atoms adjacent to the boronate ester, resulting in an improved hydrolytic stability of the latter. It is possible to decorate the cages with cyano or aldehyde groups using functionalized arylboronic acids. The aldehyde groups allow for a postsynthetic modification of the cages via an imine bond formation.
Linkage Engineering by Harnessing Supramolecular Interactions to Fabricate 2D Hydrazone-Linked Covalent Organic Framework Platforms toward Advanced Catalysis
Qian, Cheng,Zhou, Weiqiang,Qiao, Jingsi,Wang, Dongdong,Li, Xing,Teo, Wei Liang,Shi, Xiangyan,Wu, Hongwei,Di, Jun,Wang, Hou,Liu, Guofeng,Gu, Long,Liu, Jiawei,Feng, Lili,Liu, Yuchuan,Quek, Su Ying,Loh, Kian Ping,Zhao, Yanli
supporting information, p. 18138 - 18149 (2020/11/02)
Covalent organic frameworks (COFs) are an emerging class of crystalline porous polymers with tailor-made structures and functionalities. To facilitate their utilization for advanced applications, it is crucial to develop a systematic approach to control the properties of COFs, including the crystallinity, stability, and functionalities. However, such an integrated design is challenging to achieve. Herein, we report supramolecular strategy-based linkage engineering to fabricate a versatile 2D hydrazone-linked COF platform for the coordination of different transition metal ions. Intra- and intermolecular hydrogen bonding as well as electrostatic interactions in the antiparallel stacking mode were first utilized to obtain two isoreticular COFs, namely COF-DB and COF-DT. On account of suitable nitrogen sites in COF-DB, the further metalation of COF-DB was accomplished upon the complexation with seven divalent transition metal ions M(II) (M = Mn, Co, Ni, Cu, Zn, Pd, and Cd) under mild conditions. The resultant M/COF-DB exhibited extended π-conjugation, improved crystallinity, enhanced stability, and additional functionalities as compared to the parent COF-DB. Furthermore, the dynamic nature of the coordination bonding in M/COF-DB allows for the easy replacement of metal ions through a postsynthetic exchange. In particular, the coordination mode in Pd/COF-DB endows it with excellent catalytic activity and cyclic stability as a heterogeneous catalyst for the Suzuki-Miyaura cross-coupling reaction, outperforming its amorphous counterparts and Pd/COF-DT. This strategy provides an opportunity for the construction of 2D COFs with designable functions and opens an avenue to create COFs as multifunctional systems.