期刊
ACS APPLIED MATERIALS & INTERFACES
卷 13, 期 24, 页码 28782-28789出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.1c05195
关键词
bipolar aggregation-induced electrochemiluminescence; tetraphenylethylene (TPE); thiophene; conjugated microporous polymer (CMP); sensor
资金
- National Natural Science Foundation of China [21735003, 21527811, 21605096, 21974080]
- Taishan Scholar Program of Shandong Province of China [ts20110829]
- Award for Team Leader Program of Taishan Scholars of Shandong Province, China
The study successfully induced strong dual-band bipolar electrochemiluminescence with ThT-CMP and TPBE, emitting at 554 nm (anodic) and 559 nm (cathodic). A dipolar ECL sensor based on resonance energy transfer was further developed to sensitively detect RhB, displaying a large dynamic range and high sensitivity. This research opens up possibilities for designing organic structures with bipolar AIECL characteristics for luminescent device development.
Herein, we synthesize the thiophene tetraphenylethene-based conjugated microporous polymer (ThT-CMP) using the tetraphenylethylene derivative [i.e., 1,1,2,2-tetrakis(4-bromophenyl)-ethane (TPBE)] and 2,5-thiophenediboronic acid as the precursors. The aggregation of TPBE in the ThT-CMP can induce a strong dual-band bipolar electrochemiluminescence (AIECL) emission at 554 nm (anodic) and 559 nm (cathodic) with tri-n-propylamine (TPrA) and S2O82- as the coreactants, respectively. The anodic and cathodic ECL efficiencies are measured to be 11.49 and 3.82% with respect to the standard of the Ru(bpy)(3)(2+)/TPrA system, respectively. We further develop a dipolar ECL sensor to sensitively detect rhodamine B (RhB) based on resonance energy transfer. This ECL sensor possesses a large dynamic range and high sensitivity. This research provides a new avenue of designing organic structures with the characteristic of bipolar AIECL for the development of luminescent devices.
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