Two spirobifluorene-based fluorescent probes with aggregation-induced emission properties: synthesis and application in the detection of Zn2+ and cell imaging?
Journal of Materials Chemistry C Pub Date: 2019-01-21 DOI: 10.1039/C8TC05526B
Abstract
In this work, two spirobifluorene-based probes, namely SPF-1 and SPF-2, were designed and synthesized. They exhibited high selectivity and sensitivity toward Zn2+ with enhanced emissions, which could be attributed to the formation of an L–Zn complex. The detection limit of SPF-2 is 63 nM for Zn2+ and this is significantly lower than most previous reports. SPF-1 was successfully used for intracellular Zn2+ imaging. In addition, SPF-2 possesses two-photon absorption properties and has been applied in two-photon fluorescence cell imaging. This study is the first time that a spirobifluorene-based probe with aggregation-induced emission enhancement (AIEE) properties has been reported. We hope that this molecular design triggers further interest in using spiro-configured compounds in AIEE-based bioprobes for further applications.
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Journal Name：Journal of Materials Chemistry C
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CAS no.: 89640-58-4
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