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Issue 43, 2012
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A ruthenium(II) complex with environment-responsive dual emission and its application in the detection of cysteine/homocysteine

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Abstract

A ruthenium polypyridine complex [Ru(phen)2(IPBA)](PF6)2 (complex 1) (IPBA = 4-(1H-imidazo[4,5-f][1,9]phenanthroline-2-yl)benzaldehyde), which displays environment-responsive dual emissive properties, was designed and synthesized. In aprotic solvent, such as DMSO, DMF or CH3CN, the complex emits strong cyan light. When in protic solvent, it emits orange light. Similarly, the response of the complex to homocysteine and cysteine (Hcy/Cys) also shows obvious solvent dependence. TDDFT calculations reveal that the protonation of imidazole nitrogen in protic solution is responsible for the luminescent red shift. Hence, the complex could be used to detect Hcy/Cys in aprotic solvent, as well as in protic solvent.

Graphical abstract: A ruthenium(ii) complex with environment-responsive dual emission and its application in the detection of cysteine/homocysteine

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Publication details

The article was received on 01 Jun 2012, accepted on 10 Jul 2012 and first published on 10 Jul 2012


Article type: Paper
DOI: 10.1039/C2DT31180A
Citation: Dalton Trans., 2012,41, 13292-13297
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    A ruthenium(II) complex with environment-responsive dual emission and its application in the detection of cysteine/homocysteine

    H. Chen, X. Li, Y. Wu, W. Gao and R. Bai, Dalton Trans., 2012, 41, 13292
    DOI: 10.1039/C2DT31180A

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