A Water-Soluble Organometallic Conjugated Polyelectrolyte for the Direct Colorimetric Detection of Silver Ion in Aqueous Media with High Selectivity and Sensitivity

	A Water-Soluble Organometallic Conjugated Polyelectrolyte for the Direct Colorimetric Detection of Silver Ion in Aqueous Media with High Selectivity and Sensitivity
	Qin CJ ; Wong WY ; Wang LX
刊名	macromolecules
	2011
卷号	44 期号:3 页码:483-489
关键词	RATIOMETRIC FLUORESCENT SENSOR FUNCTIONALIZED POLYFLUORENE OPTICAL-PROPERTIES ENERGY-TRANSFER POLYMERS CHEMOSENSOR COMPLEXES DERIVATIVES MEMBRANES PHOSPHORESCENCE
ISSN号	0024-9297
通讯作者	wong wy
中文摘要	a water-soluble organometallic conjugated polyelectrolyte pi and its corresponding model complex m1 based on an aspartic acid-substituted fluorene spacer are reported, which possess good water solubility as well as intriguing fluorescent and phosphorescent dual-emissive properties in a completely organic-free aqueous medium at room temperature. a new colorimetric silver ion sensor based on pi is developed, which shows high selectivity and sensitivity for ag(+) ions in buffered water solution because of the ag(+)-induced intersystem crossing from the singlet to triplet states. the obvious color change from colorless to yellow upon exposure to ag(+) ion is visible to the naked eyes and can be quantified colorimetrically by the visible absorption spectroscopic method. on the basis of the fluorescence intensity of pi obtained in the fluorescence titration curves, a linear relationship is observed in the stern-volmer plot at low concentrations (1-5 mu m), and the corresponding stern-volmer quenching constant (k(sv)) of 1.9 x 10(5) m(-1) for p1 is comparable to that obtained from the fluorescence titration studies. as determined by the benesi-hildebrand plot obtained from the absorption spectra, a 1:1 complex formation is anticipated between the pt compound and ag(+) ion. the limit of detection is low at 0.5 mu m, i.e., at concentrations in the ppb range. the present study represents an original approach using a water-soluble organometallic conjugated polyelectrolyte for the accurate and rapid detection of trace amounts of ag+ ion in pure water. it also establishes a new system featuring dual-emissive properties of platinum(h) acetylide-based conjugated polymers for chemosensing application.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000286691500010
公开日期	2012-06-11
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/44833]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Qin CJ,Wong WY,Wang LX. A Water-Soluble Organometallic Conjugated Polyelectrolyte for the Direct Colorimetric Detection of Silver Ion in Aqueous Media with High Selectivity and Sensitivity[J]. macromolecules,2011,44(3):483-489.
APA	Qin CJ,Wong WY,&Wang LX.(2011).A Water-Soluble Organometallic Conjugated Polyelectrolyte for the Direct Colorimetric Detection of Silver Ion in Aqueous Media with High Selectivity and Sensitivity.macromolecules,44(3),483-489.
MLA	Qin CJ,et al."A Water-Soluble Organometallic Conjugated Polyelectrolyte for the Direct Colorimetric Detection of Silver Ion in Aqueous Media with High Selectivity and Sensitivity".macromolecules 44.3(2011):483-489.