Results 11 to 20 of about 40,447 (275)

Solvatochromic covalent organic frameworks [PDF]

Nature Communications, 2018
Covalent organic frameworks (COFs) find increasing application as sensor material, but fast switching solvatochromism was not realized. Here the authors demonstrate that combination of electron-rich and -deficient building blocks leads to COFs which fast
Laura Ascherl, Emrys W. Evans, Matthias Hennemann, Daniele Di Nuzzo, Alexander G. Hufnagel, Michael Beetz, Richard H. Friend, Timothy Clark, Thomas Bein, Florian Auras   +9 more
doaj   +6 more sources

Polyphosphonate covalent organic frameworks

Nature Communications
Herein, we report polyphosphonate covalent organic frameworks (COFs) constructed via P-O-P linkages. The materials are synthesized via a single-step condensation reaction of the charge-assisted hydrogen-bonded organic framework, which is constructed from
Ke Xu, Robert Oestreich, Takin Haj Hassani Sohi, Mailis Lounasvuori, Jean G. A. Ruthes, Yunus Zorlu, Julia Michalski, Philipp Seiffert, Till Strothmann, Patrik Tholen, A. Ozgur Yazaydin, Markus Suta, Volker Presser, Tristan Petit, Christoph Janiak, Jens Beckmann, Jörn Schmedt auf der Günne, Gündoğ Yücesan   +17 more
doaj   +4 more sources

Multiple-component covalent organic frameworks

Nature Communications, 2016
Covalent organic frameworks are crystalline porous polymers integrating molecular building blocks into periodic structures. Here, the authors report a general multiple-component condensation strategy that enables the use of one knot and two or three ...
Ning Huang, Lipeng Zhai, Damien E. Coupry, Matthew A. Addicoat, Keiko Okushita, Katsuyuki Nishimura, Thomas Heine, Donglin Jiang   +7 more
doaj   +3 more sources

2.5-dimensional covalent organic frameworks

Nature Communications
Covalently bonded crystalline substances with micropores have broad applications. Covalent organic frameworks (COFs) are representative of such substances. They have so far been classified into two-dimensional (2D) and three-dimensional (3D) COFs.
Tomoki Kitano, Syunto Goto, Xiaohan Wang, Takayuki Kamihara, Yoshihisa Sei, Yukihito Kondo, Takumi Sannomiya, Hidehiro Uekusa, Yoichi Murakami   +8 more
doaj   +3 more sources

Colloidal Covalent Organic Frameworks

ACS Central Science, 2017
Covalent organic frameworks (COFs) are two- or three-dimensional (2D or 3D) polymer networks with designed topology and chemical functionality, permanent porosity, and high surface areas. These features are potentially useful for a broad range of applications, including catalysis, optoelectronics, and energy storage devices.
Brian J. Smith, Lucas R. Parent, Anna C. Overholts, Peter A. Beaucage, Ryan P. Bisbey, Anton D. Chavez, Nicky Hwang, Chiwoo Park, Austin M. Evans, Nathan C. Gianneschi, William R. Dichtel   +10 more
doaj   +4 more sources

Reconstructed covalent organic frameworks [PDF]

Nature, 2022
AbstractCovalent organic frameworks (COFs) are distinguished from other organic polymers by their crystallinity1–3, but it remains challenging to obtain robust, highly crystalline COFs because the framework-forming reactions are poorly reversible4,5.
Weiwei Zhang, Linjiang Chen, Sheng Dai, Chengxi Zhao, Cheng Ma, Lei Wei, Minghui Zhu, Samantha Y. Chong, Haofan Yang, Lunjie Liu, Yang Bai, Miaojie Yu, Yongjie Xu, Xiao-Wei Zhu, Qiang Zhu, Shuhao An, Reiner Sebastian Sprick, Marc A. Little, Xiaofeng Wu, Shan Jiang, Yongzhen Wu, Yue-Biao Zhang, He Tian, Wei-Hong Zhu, Andrew I. Cooper   +24 more
openaire   +3 more sources

Dynamic Covalent Synthesis of Crystalline Porous Graphitic Frameworks [PDF]

, 2020
Porous graphitic framework (PGF) is a two-dimensional (2D) material that has emerging energy applications. An archetype contains stacked 2D layers, the structure of which features a fully annulated aromatic skeleton with embedded heteroatoms and periodic
Cai, S, Chan, EM, Chen, H, Ciston, J, Dun, C, Gordon, MP, Li, X, Liu, Y, Liu, Y, Mao, H, Reimer, JA, Sun, B, Tan, T, Urban, JJ, Wang, H, Zhang, J, Zhang, Q, Zheng, H, Zheng, Q   +18 more
core   +2 more sources

Covalent organic frameworks for optical applications

Aggregate, 2021
Linking molecules into extended crystalline networks to construct covalent organic frameworks (COFs) added in variety to the readily thriving research on molecule‐based solid‐state materials, featured by classic polymers and molecular crystals.
Liang Zhang, Lezhi Yi, Zhi‐Jun Sun, Hexiang Deng   +3 more
doaj   +1 more source

Electronic chemical potentials of porous metal-organic frameworks [PDF]

, 2014
The binding energy of an electron in a material is a fundamental characteristic, which determines a wealth of important chemical and physical properties. For metal-organic frameworks this quantity is hitherto unknown.
Butler, Keith T., Hendon, Christopher H., Walsh, Aron   +2 more
core   +4 more sources

Development of covalent triazine frameworks as heterogeneous catalytic supports [PDF]

, 2019
Covalent triazine frameworks (CTFs) are established as an emerging class of porous organic polymers with remarkable features such as large surface area and permanent porosity, high thermal and chemical stability, and convenient functionalization that ...
Krishnaraj, Chidharth, Leus, Karen, Tahir, Norini, Van Der Voort, Pascal   +3 more
core   +1 more source