Cyclometalated Iridium(III) Chelates-a New Exceptional Class of the Electrochemiluminescent Luminophores

Overview

Journal Anal Bioanal Chem

Specialty Chemistry

Date 2016 Jun 4

PMID 27255104

Citations 5

Authors

Andrzej Kapturkiewicz

Affiliations

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Abstract

Recent development of the phosphorescent cyclometalated iridium(III) chelates has enabled, due to their advantageous electrochemical and photo-physical properties, important breakthroughs in many photonic applications. This particular class of 5d(6) ion complexes has attracted increasing interest because of their potential application in electroluminescence devices with a nearly 100 % internal quantum efficiency for the conversion of electric energy to photons. Similar to electroluminescence, the cyclometalated iridium(III) chelates have been successfully applied in the electricity-to-light conversion by means of the electrochemiluminescence (ECL) processes. The already reported ECL systems utilizing the title compounds exhibit extremely large ECL efficiencies that allow one to envisage many potential application for them, especially in further development of ECL-based analytical techniques. This review, based on recently published papers, focuses on the ECL properties of this very exciting class of organometallic luminophores. The reported work, describing results from fundamental as well as application-oriented investigations, will be surveyed and briefly discussed. Graphical abstract Depending on the chemical nature of the cyclometalated irdium(III) chelate different colours of the emitted light can be produced during electrochemical excitation.

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References

Lamansky S, Djurovich P, Murphy D, Kwong R, Tsyba I, Bortz M . Synthesis and characterization of phosphorescent cyclometalated iridium complexes. Inorg Chem. 2001; 40(7):1704-11. DOI: 10.1021/ic0008969. View

Truong J, Spilstead K, Barbante G, Doeven E, Wilson D, Barnett N . Chemiluminescence detection with water-soluble iridium(III) complexes containing a sulfonate-functionalised ancillary ligand. Analyst. 2014; 139(22):6028-35. DOI: 10.1039/c4an01366b. View

Li M, Jiao P, Lin M, He W, Chen G, Chen X . High electrochemiluminescence of a new water-soluble iridium(III) complex for determination of antibiotics. Analyst. 2010; 136(1):205-10. DOI: 10.1039/c0an00444h. View

Monaco S, Semeraro M, Tan W, Tian H, Ceroni P, Credi A . Multifunctional switching of a photo- and electro-chemiluminescent iridium-dithienylethene complex. Chem Commun (Camb). 2012; 48(69):8652-4. DOI: 10.1039/c2cc34054b. View

You Y, Nam W . Photofunctional triplet excited states of cyclometalated Ir(III) complexes: beyond electroluminescence. Chem Soc Rev. 2012; 41(21):7061-84. DOI: 10.1039/c2cs35171d. View

Wu F, Tong B, Wei X, Chen L . Chemiluminescence determination of sulphite using a cyclometalated iridium complex as chemiluminescence reagent. Luminescence. 2012; 27(6):519-23. DOI: 10.1002/bio.1387. View

Sajoto T, Djurovich P, Tamayo A, Oxgaard J, Goddard 3rd W, Thompson M . Temperature dependence of blue phosphorescent cyclometalated Ir(III) complexes. J Am Chem Soc. 2009; 131(28):9813-22. DOI: 10.1021/ja903317w. View

Moon H, Lodge T, Frisbie C . Solution-processable electrochemiluminescent ion gels for flexible, low-voltage, emissive displays on plastic. J Am Chem Soc. 2014; 136(9):3705-12. DOI: 10.1021/ja5002899. View

Chou P, Chi Y . Phosphorescent dyes for organic light-emitting diodes. Chemistry. 2006; 13(2):380-95. DOI: 10.1002/chem.200601272. View

10.

Lowry M, Bernhard S . Synthetically tailored excited states: phosphorescent, cyclometalated iridium(III) complexes and their applications. Chemistry. 2006; 12(31):7970-7. DOI: 10.1002/chem.200600618. View

11.

Chen K, Schmittel M . A triple-channel lab-on-a-molecule for triple-anion quantification using an iridium(III)-imidazolium conjugate. Chem Commun (Camb). 2014; 50(43):5756-9. DOI: 10.1039/c4cc01421a. View

12.

Kiran R, Zammit E, Hogan C, James B, Barnett N, Francis P . Chemiluminescence from reactions with bis-cyclometalated iridium complexes in acidic aqueous solution. Analyst. 2009; 134(7):1297-8. DOI: 10.1039/b905024h. View

13.

Miao W . Electrogenerated chemiluminescence and its biorelated applications. Chem Rev. 2008; 108(7):2506-53. DOI: 10.1021/cr068083a. View

14.

Swanick K, Sandroni M, Ding Z, Zysman-Colman E . Enhanced Electrochemiluminescence from a Stoichiometric Ruthenium(II)-Iridium(III) Complex Soft Salt. Chemistry. 2015; 21(20):7435-40. DOI: 10.1002/chem.201406533. View

15.

Zanarini S, Felici M, Valenti G, Marcaccio M, Prodi L, Bonacchi S . Green and blue electrochemically generated chemiluminescence from click chemistry--customizable iridium complexes. Chemistry. 2011; 17(16):4640-7. DOI: 10.1002/chem.201002956. View

16.

Doeven E, Barbante G, Hogan C, Francis P . Potential-Resolved Electrogenerated Chemiluminescence for the Selective Detection of Multiple Luminophores. Chempluschem. 2020; 80(3):456-470. DOI: 10.1002/cplu.201402407. View

17.

Zanoni K, Coppo R, Amaral R, Murakami Iha N . Ir(III) complexes designed for light-emitting devices: beyond the luminescence color array. Dalton Trans. 2015; 44(33):14559-73. DOI: 10.1039/c5dt01644d. View

18.

Liu Z, Qi W, Xu G . Recent advances in electrochemiluminescence. Chem Soc Rev. 2015; 44(10):3117-42. DOI: 10.1039/c5cs00086f. View

19.

Kirschbaum S, Baeumner A . A review of electrochemiluminescence (ECL) in and for microfluidic analytical devices. Anal Bioanal Chem. 2015; 407(14):3911-26. DOI: 10.1007/s00216-015-8557-x. View

20.

Muegge B, Richter M . Electrogenerated chemiluminescence from polymer-bound ortho-metallated iridium(III) systems. Luminescence. 2005; 20(2):76-80. DOI: 10.1002/bio.807. View