A new water-soluble heteronuclear PdII–AuI pincer complex as two-photon luminescent probe for biological Co2+ detection. Issue 96 (29th September 2016)

• Record Type: Journal Article
• Authors: Tabrizi, Leila; Chiniforoshan, Hossein
• Is Part Of: RSC advances. Volume 6:Issue 96(2016)
• Page Start: 93349
• Page End: 93355
• Publication Date: 2016-09-29
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c6ra21386c
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : A new water-soluble heteronuclear Pd II –Au I pincer complex was synthesized and investigated for biological Co 2+ detection. Abstract : The heterodinuclear NCN pincer complex K[(L)Pd II (DPS)Au I Cl], 1, (HL = 5-methoxy-1, 3-bis(1-methyl-1 H -benzo[ d ]imidazol-2-yl)benzene, DPSH2 = 4, 4′-dicyanamidodiphenyl sulfone) with two-photon induced luminescent properties was synthesized and investigated for biological Co 2+ detection. Importantly, 1 can selectively recognize Co 2+ in aqueous media in the presence of other abundant cellular cations (such as Na +, K +, Mg 2+, and Ca 2+ ), trace metal ions in organisms (such as Zn 2+, Ag +, Fe 3+, Fe 2+, Ni 2+, Mn 2+, and Cu 2+ ), prevalent toxic metal ions in the environment (such as Cd 2+, Hg 2+, and Cr 3+ ), and amino acids, with high sensitivity. The fluorescence response of1 -Co 2+ with respect to pH change was studied and the resulting demonstrated fluorescence enhancement was observed in the pH range of 4–10. The water-soluble probe1 was successfully applied in the visualizing of the site of Co 2+ accumulation as well as estimating of trace amounts of Co 2+ ions in live HeLa cells by two-photon microscopy.