期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 321, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2020.128486
关键词
Iridium(III) dimer; Acetylacetone; Luminogenic probe; Time-Resolved emission spectroscopy
资金
- Hong Kong Baptist University [FRG2/17-18/003]
- Health and Medical Research Fund [HMRF/14150561]
- National Natural Science Foundation of China [21575121, 21775131]
- Hong Kong Baptist University Century Club Sponsorship Scheme 2019
- Interdisciplinary Research Matching Scheme [RC-IRMS/16-17/03]
- Interdisciplinary Research Clusters Matching Scheme [RC-IRCs/17-18/03]
- Collaborative Research Fund [C5026-16 G]
- HKBU Strategic Development Fund [SKLP_1920_P02]
- Science and Technology Development Fund, Macao SAR [0072/2018/A2]
- University of Macau [MYRG2019-00002-ICMS, MYRG2018-00187-ICMS]
- SKLEBA
The wide use of acetylacetone (Acac) in industries is fueling the need for the development of Acac detection methods. However, only a few nanomaterial-based fluorescent probes for Acac have been reported, and these probes either lack turn-on detection capability, and/or aqueous compatibility. Herein, a series of iridium(III) dimers were synthesized in one step and screened as luminescent probes for Acac. The candidate probe 8 exhibited a luminescence enhancement of near 160-fold in the presence of Acac in aqueous solution, with a linear relationship of Acac (0.1-10 mu M) and a limit of detection (LOD) of 0.043 mu M. Mechanistically, the probe chelated with Acac to form a new luminescent complex. Moreover, the long lifetime of probe 8 allowed its response to Acac to be distinguished from fluorescent interference through time-resolved emission spectroscopy (TRES). Probe 8 further demonstrated its practical application as a luminogenic probe for Acac in real water samples. In summary, because probe 8 is very easily prepared and modified compared with existing Acac luminescence probes, it serves as an ideal starting point to develop next-generation luminogenic probes for monitoring Acac in environmental and biological systems.
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