期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 142, 期 8, 页码 3701-3705出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.9b13568
关键词
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资金
- JST-CREST program [JPMJCR1321]
- Ministry of Education, Culture, Sports, Science and Technology, Government of Japan [JP16H06517]
- KAKENHI [JP18H02072, JP19H05381]
Unlike commonly used molecular recognition techniques, recognition of polymer structures requires an additional aspect of extremely high recognition ability, by which marginal structural differences can be identified in a large polymer chain. Herein we show that metal-organic frameworks (MOFs) can recognize polymer terminal structures, thus enabling the first reported chromatographic separation of polymers. End-functionalized polyethylene glycols (PEGs) are selectively inserted into the MOF channel, the insertion kinetics being dependent on the projection size of the PEG terminus. This size-selective insertion mechanism facilitates precise discrimination of end-functionalized PEGs using liquid chromatography (LC). An MOF-packed column thus provides an efficient and easily accessible method for the separation of such end-functionalized polymers using conventional LC systems.
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