Document Type

Journal Article

Department/Unit

Department of Chemistry

Title

Design and synthesis of heterobimetallic Ru(II)–Ln(III) complexes as chemodosimetric ensembles for the detection of biogenic amine odorants

Language

English

Abstract

The detection of neutral biogenic amines plays a crucial role in food safety. Three new heterobimetallic Ru(II)-Ln(III) donor-acceptor complexes, KPrRu, KNdRu, and KSmRu, K{[Ru(II)(tBubpy)(CN) 4]2-Ln(III)(H2O)4} (where tBubpy = 4,4′-di-tert-butyl-2,2′-bipyridine), have been synthesized and characterized. Their photophysical and X-ray crystallographic data were reported in this study. These complexes were found to be selective for biogenic amine vapors, such as histamine, putrescine, and spermidine, with a detection limit down to the ppb level. The sensitivities of these complexes to the amines were recorded as ∼log K = 3.6-5.0. Submicron rods of the complexes, with a nanoscale diameter and microscale length, were obtained through a simple precipitation process. Free-standing polymeric films with different degrees of porosity were fabricated by blending the submicron rods with polystyrene polymer. The polymer with the highest level of porosity exhibited the strongest luminescence enhancement after amine exposure. Real time monitoring of gaseous biogenic amines was applied to real fish samples (Atlantic mackerel) by studying the spectrofluorimetric responses of the Ru(II)-Ln(III) blended polymer film. © 2013 American Chemical Society.

Publication Date

2013

Source Publication Title

Analytical Chemistry

Volume

85

Issue

17

Start Page

8246

End Page

8253

Publisher

American Chemical Society

DOI

10.1021/ac401513j

Link to Publisher's Edition

http://dx.doi.org/10.1021/ac401513j

ISSN (print)

00032700

ISSN (electronic)

15206882

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