期刊
ACS APPLIED MATERIALS & INTERFACES
卷 15, 期 3, 页码 4569-4579出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.2c20580
关键词
covalent organic framework; fluorescent COF; N-* B interaction; sensors; amine detection
A general strategy to modify COF-1 by different fluorescent molecules via N-* B interaction was developed, leading to highly fluorescent COFs with tunable emission colors.
Highly fluorescent covalent organic frameworks (COFs) are rarely obtained because of the pi-pi stacked layers with aggregation-caused quenching behavior. Unarguably, highly fluorescent COFs with tunable emission colors are even more rarely achieved. Herein, a general strategy to modify the classical COF material (named COF-1) by different fluorescent molecules via N-* B interaction was developed. In this method, the boron-containing COF-1 acted as a porous and crystalline matrix as well as a reaction partner of Lewis acid; after interacting with fluorescent molecules with the anchoring group of pyridine (Lewis base), COF-1 takes a gorgeous transfiguration from a non-emissive powder into a highly fluorescent COF material with tunable emission colors. This disclosed method endowed the typical COFs with new emissive life and is speculated with the general research concept for all boron-containing COFs. Benefiting from the prominent fluorescent emission in the aggregation state, sensitive probes toward amines are achieved.
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