期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 59, 期 24, 页码 9293-9298出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201912155
关键词
crown ethers; host-guest chemistry; macrocycle; room-temperature phosphorescence; supramolecular interaction
资金
- National Science Foundation of China [21788102, 81372274, 81501591, 8141101080]
- Research Grants Council of Hong Kong [16308016, C6009-17G, 16305618, 16304819]
- Innovation and Technology Commission [ITC-CNERC14SC01]
- Science and Technology Plan of Shenzhen [JCYJ20160229205601482, JCYJ20170818113602462, JCYJ20170818113348852]
Supramolecular macrocyclic hosts have long been used in smart materials. However, their triplet emission and regulation at crystal level is rarely studied. Herein, ultralong and universal room-temperature phosphorescence (RTP) is reported for traditional crown ethers. A supramolecular strategy involving chain length adjustment and morphological locking through complexation with K+ was explored as a general method to tune the phosphorescence lifetime in the solid state. A maximum 10-fold increase of lifetime after complex formation accompanied with by invisible to visible phosphorescence was achieved. A deep encryption based on this activated RTP strategy was also facilely fabricated. This work thus opens a new world for supramolecular macrocycles and their intrinsic guest responsiveness offers a new avenue for versatile smart luminescent materials.
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