Exploring Electrochemiluminescence Behaviours and Absolute Quantum Efficiencies of Substituted Metal-Free Phthalocyanine and Unsubstituted Zinc Phthalocyanine
| dc.affiliation.institution | Western University | |
| dc.affiliation.institution | The University of Western Ontario | |
| dc.contributor.author | Winslade, Jessica E | |
| dc.contributor.author | Ding, Zhifeng | |
| dc.date.accepted | 2025-09-05 | |
| dc.date.accessioned | 2025-11-03T20:02:56Z | |
| dc.date.issued | 2025-09-05 | |
| dc.date.revised | 2025-08-29 | |
| dc.date.submitted | 2025-07-26 | |
| dc.description.abstract | The electrochemiluminescence (ECL) properties and absolute quantum efficiencies (ΦECL) of octabutoxy-substituted metal-free phthalocyanine (H2Pc(α-OC4H9)8) and unsubstituted zinc phthalocyanine (ZnPc) were systematically investigated using spectroelectrochemical and photoelectrochemical techniques. H2Pc(α-OC4H9)8 exhibited negligible ECL in the annihilation pathway but showed a substantial increase in emission with the addition of benzoyl peroxide (BPO), resulting in an ΦECL of 0.00075 ± 0.00003%. Spectroscopy revealed Q-band transitions at 635 and 780 nm along with the formation of an exciplex at 880 nm in the coreactant ECL system, and a excimer emission at 900 nm were observed via PL. ZnPc demonstrated enhanced ECL with BPO, producing an exciplex emission at 775 nm and an ΦECL of 0.0099 ± 0.0001%, which is lower than that of Ru(bpy)32+ but exceeds that of related porphyrin derivatives. These results highlight the ECL behaviours of phthalocyanines and provide insight into their use as ECL luminophores. | |
| dc.description.disclaimer | The presentation of the authors' names and (or) special characters in the title of the pdf file of the accepted manuscript may differ slightly from what is displayed on the item page. The information in the pdf file of the accepted manuscript reflects the original submission by the author. | |
| dc.identifier.doi | 10.1139/cjc-2025-0169 | |
| dc.identifier.issn | 0008-4042 | |
| dc.identifier.uri | https://hdl.handle.net/1807/149555 | |
| dc.publication.journal | Canadian Journal of Chemistry | |
| dc.publisher | Canadian Science Publishing | |
| dc.title | Exploring Electrochemiluminescence Behaviours and Absolute Quantum Efficiencies of Substituted Metal-Free Phthalocyanine and Unsubstituted Zinc Phthalocyanine | |
| dc.type | Research Article | |
| dc.type | Article Post-Print |