Please use this identifier to cite or link to this item: https://doi.org/10.1021/jacs.7b02696
Title: Salicylideneanilines-Based Covalent Organic Frameworks as Chemoselective Molecular Sieves
Authors: Ning, Guo-Hong 
Chen, Zixuan
Gao, Qiang 
Tang, Wei 
Chen, Zhongxin 
Liu, Cuibo 
Tian, Bingbing 
Li, Xing 
Loh, Kian Ping 
Keywords: Science & Technology
Physical Sciences
Chemistry, Multidisciplinary
Chemistry
SCHIFF-BASES
SOLID-STATE
N-SALICYLIDENEANILINES
CRYSTALLINE
PHOTOCHROMISM
THERMOCHROMISM
TOPOCHEMISTRY
CONSTRUCTION
SPECTROSCOPY
Issue Date: 5-Jul-2017
Publisher: AMER CHEMICAL SOC
Citation: Ning, Guo-Hong, Chen, Zixuan, Gao, Qiang, Tang, Wei, Chen, Zhongxin, Liu, Cuibo, Tian, Bingbing, Li, Xing, Loh, Kian Ping (2017-07-05). Salicylideneanilines-Based Covalent Organic Frameworks as Chemoselective Molecular Sieves. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 139 (26) : 8897-8904. ScholarBank@NUS Repository. https://doi.org/10.1021/jacs.7b02696
Abstract: © 2017 American Chemical Society. Porous materials such as covalent organic frameworks (COFs) are good candidates for molecular sieves due to the chemical diversity of their building blocks, which allows fine-tuning of their chemical and physical properties by design. Tailored synthesis of inherently functional building blocks can generate framework materials with chemoresponsivity, leading to controllable functionalities such as switchable sorption and separation. Herein, we demonstrate a chemoselective, salicylideneanilines-based COF (SA-COF), which undergoes solvent-triggered tautomeric switching. This is unique compared to solid-state salicylideneanilines' counterpart, which typically requires high energy input such as photo or thermal activation to trigger the enol-keto tautomerisim and cis-trans isomerization. Accompanying the tautomerization, the ionic properties of the COF can be tuned reversibly, thus forming the basis of size-exclusion, selective ionic binding or chemoseparation in SA-COF demonstrated in this work.
Source Title: JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
URI: https://scholarbank.nus.edu.sg/handle/10635/167653
ISSN: 0002-7863
1520-5126
DOI: 10.1021/jacs.7b02696
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