期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 21, 期 11, 页码 4326-4332出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201406026
关键词
aggregation-induced emission; cell imaging; fluorescence; hydrazones; photoactivatable fluorophores
资金
- National Natural Science Foundation of China [2142200199, 21390410, 21375074]
- National Key Scientific Instrument and Equipment Development Project of China [2012YQ030111]
- Tsinghua University Initiative Scientific Research Program [20131089220]
- Recruitment Program of Global Youth Experts of China
Photoactivatable (caged) fluorophores are widely used in chemistry, materials, and biology. However, the development of such molecules exhibiting photoactivable solid-state fluorescence is still challenging due to the aggregation-caused quenching (ACQ) effect of most fluorophores in their aggregate or solid states. In this work, we developed caged salicylaldehyde hydrazone derivatives, which are of aggregation-induced emission (AIE) characteristics upon light irradiation, as efficient photoactivatable solid-state fluorophores. These compounds displayed multiple-color emissions and ratiometric (photochromic) fluorescence switches upon wavelength-selective photoactivation, and were successfully applied for photopatterning and photoactivatable cell imaging in a multiple-color and stepwise manner.
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