Photophysical and Analyte Sensing Properties of Cyclometalated Ir(III) Complexes

被引：14

作者：

Leavens, Bethany B. H. ^{[1
]}

Trindle, Carl O. ^{[1
]}

Sabat, Michal ^{[1
,2
]}

Altun, Zikri ^{[3
]}

Demas, James N. ^{[1
]}

DeGraff, B. A. ^{[4
]}

机构：

[1] Univ Virginia, Dept Chem, Charlottesville, VA 22904 USA

[2] Univ Virginia, Dept Mat Sci & Engn, Nanoscale Mat Characterizat Facil, Charlottesville, VA 22904 USA

[3] Marmara Univ, Dept Phys, Istanbul, Turkey

[4] James Madison Univ, Dept Chem, Harrisonburg, VA 22807 USA

来源：

JOURNAL OF FLUORESCENCE | 2012年 / 22卷 / 01期

基金：

美国国家科学基金会;

关键词：

Iridium(III); Orthometallated; Luminescence; Lead detection; Iridium complexes; Theoretical state calculations; MOLECULAR CALCULATIONS; AB-INITIO; IRIDIUM(III); METHANOL;

D O I：

10.1007/s10895-011-0943-y

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

The synthesis of some heteroleptic, cyclometalated iridium(III) complexes is described. The utility of these [Ir(ppy)(2)(N-N)]Cl (ppy=2-phenylpyridine and N-N=substituted bipyridine, biquinoline, or phenanthroline) complexes as luminescence-based sensors is assessed. The emission intensity of an Ir(III) complex featuring the 3,3'-H(n)dcbpy ligand (H(n)dcbpy=dicarboxylic acid-2,2'-bipyridine; n=0,1,2 to indicate deprotonated, mono-and diprotonated species, respectively) is seen to increase in the presence of Pb(II). Insight into the structure and analyte-sensing capability is achieved by X-ray crystallography in conjunction with computational modeling. Complexes incorporating carboxylic acid-functionalized bipyridine and biquinoline as the polypyridyl ligand show pH sensitivity while similar phenanthroline complexes do not.

引用

页码：163 / 174

页数：12

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