Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 59, Issue 25, Pages 10151-10159Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201915199
Keywords
aggregation induced emission; coordination cages; live-cell imaging; molecular rotors; self-assembly
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Funding
- National Research Foundation Singapore [NRF2018-NRF-ANR007 POCEMON]
- Ministry of Education-Singapore (MOE AcRF Tier 1) [R-279-000-540-114, R-279-000-482-133]
- Ministry of Education-Singapore (MOE AcRF Tier 2) [MOE2018-T2-2148]
- Agency for Science, Technology and Research [IRG A1783c0015, IAF-PP A1789a0024]
- National Natural Science Foundation of China [21676094, 21576058]
- Fundamental Research Funds for the Central Universities [2017MS083]
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The self-assembly of highly stable zirconium(IV)-based coordination cages with aggregation induced emission (AIE) molecular rotors for in vitro bio-imaging is reported. The two coordination cages, NUS-100 and NUS-101, are assembled from the highly stable trinuclear zirconium vertices and two flexible carboxyl-decorated tetraphenylethylene (TPE) spacers. Extensive experimental and theoretical results show that the emissive intensity of the coordination cages can be controlled by restricting the dynamics of AIE-active molecular rotors though multiple external stimuli. Because the two coordination cages have excellent chemical stability in aqueous solutions (pH stability: 2-10) and impressive AIE characteristics contributed by the molecular rotors, they can be employed as novel biological fluorescent probes for in vitro live-cell imaging.
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