AI Article Synopsis
- AIECL (aggregation-induced electrochemiluminescence) luminophores show promise in ECL engineering by overcoming the quenching issues found in solid luminescent materials, but there’s a scarcity of emitters with high AIECL performance.
- Researchers designed imine-linked covalent organic frameworks (COFs) using specific symmetrical monomers to serve as ECL emitters in water.
- The study found that COFs containing terthienyl units exhibited ECL intensity 206 times greater than those with furan units due to enhanced thiophene units and π-π conjugation, providing a new strategy for creating efficient ECL-active COFs with excellent AIECL efficiency.
Article Abstract
Since aggregation-induced electrochemiluminescence (AIECL) luminophore overcomes the restriction of aggregation-caused quenching in solid luminescent materials, AIECL luminophore has become a promising material in the field of electrochemiluminescence (ECL) engineering. However, the lack of ECL emitters with high AIECL performance limits its wide application. Herein, imine-linked covalent organic frameworks (COFs) with C symmetrical tetraphenyl ethylene and C symmetrical five-membered heteroaromatic monomers are designed as ECL emitter in aqueous media. Significantly, the ECL intensity of COFs with terthienyl units (TTA-TAPE) is 206 times that of COFs with furan units in the presence of tri-n-propylamine (TPrA), which is the result of enhancing ECL signals by increasing the thiophene units and π-π conjugation of COFs. Furthermore, the ECL mechanism of these COFs is vested in the bandgap model. Thus, the study provides a strategy for designing highly efficient ECL-active COFs emitters with excellent AIECL efficiency.
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| http://dx.doi.org/10.1002/chem.202403820 | DOI Listing |
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