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No HS, Hong JI. Reaction-based energy level modulation of a cyclometalated iridium complex for electrochemiluminescent detection of formaldehyde. RSC Adv 2023; 13:32070-32076. [PMID: 37920760 PMCID: PMC10618939 DOI: 10.1039/d3ra06936b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Accepted: 10/23/2023] [Indexed: 11/04/2023] Open
Abstract
Formaldehyde is a toxic compound present in both the environment and living systems, and its detection is important due to its association with various pathological process. In this study, we report a new electrochemiluminescence (ECL) probe based on a cyclometalated iridium complex (IrHAA) for the selective detection of formaldehyde. The homoallylamine moiety in IrHAA reacts with formaldehyde, undergoing a 2-aza-Cope-rearrangement reaction to form a formyl group. Significant changes in the electronic properties and molecular orbital energies of the iridium complex through the functional group transformation result in enhanced ECL and radiometric phosphorescence changes, enabling the quantitative and selective detection of formaldehyde. The energetic requirements for ECL sensing were investigated, highlighting the importance of the excited state energy for achieving efficient ECL. The sensing mechanism was elucidated using NMR spectroscopy and MALDI-TOF analysis.
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Affiliation(s)
- Hyun Seung No
- Department of Chemistry, Seoul National University 1 Gwanak-ro, Gwanak-gu Seoul 08826 Korea
| | - Jong-In Hong
- Department of Chemistry, Seoul National University 1 Gwanak-ro, Gwanak-gu Seoul 08826 Korea
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Altinolcek N, Battal A, Tavasli M, Cameron J, Peveler WJ, Yu HA, Skabara PJ, Fairbairn NJ, Hedley GJ. A red-orange carbazole-based iridium(III) complex: Synthesis, thermal, optical and electrochemical properties and OLED application. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.122004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Gao X, Han S, Zheng M, Liang A, Li J, Zou D, Wu Y, Wu Y. Transition-Metal-Free Oxidation of Benzylic C-H Bonds of Six-Membered N-Heteroaromatic Compounds. J Org Chem 2019; 84:4040-4049. [PMID: 30854850 DOI: 10.1021/acs.joc.9b00035] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A novel oxidation of benzylic C-H bonds for the synthesis of diverse six-membered N-heteroaromatic aldehydes and ketones has been developed. The obvious advantages of this approach are the simple operation, mild reaction conditions, and without use of toxic reagent and transition metal. The present method should provide a useful access for the synthesis and modification of N-heterocycles.
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Affiliation(s)
- Xianying Gao
- The College of Chemistry and Molecular Engineering, Henan Key Laboratory of Chemical Biology and Organic Chemistry , Zhengzhou University , Zhengzhou 450052 , People's Republic of China
| | - Shuaijun Han
- The College of Chemistry and Molecular Engineering, Henan Key Laboratory of Chemical Biology and Organic Chemistry , Zhengzhou University , Zhengzhou 450052 , People's Republic of China
| | - Maolin Zheng
- The College of Chemistry and Molecular Engineering, Henan Key Laboratory of Chemical Biology and Organic Chemistry , Zhengzhou University , Zhengzhou 450052 , People's Republic of China
| | - Apeng Liang
- The College of Chemistry and Molecular Engineering, Henan Key Laboratory of Chemical Biology and Organic Chemistry , Zhengzhou University , Zhengzhou 450052 , People's Republic of China
| | - Jingya Li
- Tetranov Biopharm LLC and Collaborative Innovation Center of New Drug Research and Safety Evaluation , Zhengzhou 450052 , People's Republic of China
| | - Dapeng Zou
- The College of Chemistry and Molecular Engineering, Henan Key Laboratory of Chemical Biology and Organic Chemistry , Zhengzhou University , Zhengzhou 450052 , People's Republic of China
| | - Yusheng Wu
- The College of Chemistry and Molecular Engineering, Henan Key Laboratory of Chemical Biology and Organic Chemistry , Zhengzhou University , Zhengzhou 450052 , People's Republic of China.,Tetranov Biopharm LLC and Collaborative Innovation Center of New Drug Research and Safety Evaluation , Zhengzhou 450052 , People's Republic of China.,Tetranov International, Inc. , 100 Jersey Avenue, Suite A340 , New Brunswick , New Jersey 08901 , United States
| | - Yangjie Wu
- The College of Chemistry and Molecular Engineering, Henan Key Laboratory of Chemical Biology and Organic Chemistry , Zhengzhou University , Zhengzhou 450052 , People's Republic of China
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