1.安徽工业大学 化学与化工学院,安徽 马鞍山 243000
2.成都信息工程大学 信息材料及器件化应用四川省高校重点实验室,四川 成都 610225
吴芳辉,博士,教授,研究方向:功能材料的光电传感研究,E - mail:wfhwfh@ahut.edu.cn
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王婷婷,任美娟,吴芳辉等.新型“开式”环金属铱配合物次氯酸盐荧光探针的合成与应用[J].分析测试学报,2022,41(08):1170-1177.
WANG Ting-ting,REN Mei-juan,WU Fang-hui,et al.Synthesis and Application of a Novel “Switch-on” Cyclometalated Iridium Complex Fluorescent Probe for Hypochlorite Detection[J].Journal of Instrumental Analysis,2022,41(08):1170-1177.
王婷婷,任美娟,吴芳辉等.新型“开式”环金属铱配合物次氯酸盐荧光探针的合成与应用[J].分析测试学报,2022,41(08):1170-1177. DOI: 10.19969/j.fxcsxb.22022603.
WANG Ting-ting,REN Mei-juan,WU Fang-hui,et al.Synthesis and Application of a Novel “Switch-on” Cyclometalated Iridium Complex Fluorescent Probe for Hypochlorite Detection[J].Journal of Instrumental Analysis,2022,41(08):1170-1177. DOI: 10.19969/j.fxcsxb.22022603.
设计合成了一种新型灵敏的荧光化学探针[Ir(bzq),2,(L1)](PF,6,)(bzq = 苯并喹啉,L1 = 4'-甲基-2,2'-联吡啶-4-甲醛肟)并进行了详细表征。将该配合物用于对次氯酸盐(ClO,-,)的荧光测定,发现加入ClO,-,后,探针溶液的荧光显著增强,在365 nm紫外灯下由暗棕色迅速转变为明亮的橙黄色,可能是配体L1中的肟作为反应位点被ClO,-,氧化为羧酸,抑制了非辐射衰变过程从而使探针发射出强荧光。在优化实验条件下,探针[Ir(bzq),2,(L1)](PF,6,)的荧光强度与ClO,-,浓度在0.1 ~ 210 µmol/L范围内呈良好的线性关系,检出限为3.08 nmol/L。荧光探针对ClO,-,的选择性较好,其它可能的共存离子不干扰测定。采用该方法测定了当地河水中的次氯酸盐,加标回收率为92.4% ~ 103%,结果令人满意,表明该方法可用于实际样品中ClO,-,的测定。
In this paper,a novel sensitive fluorescent probe[Ir(bzq),2,(L1)](PF,6,)(bzq,i.e. benzoquinoline,and L1,i.e. 4'-methyl-2,2'-bipyridine-4-formaldehyde oxime) was synthesized and characterized in detail.After adding hypochlorite(ClO,-,) in [Ir(bzq),2,(L1)](PF,6,) system,the fluorescence of this complex was significantly enhanced because the oxime group on L1 as the reaction site was transformed into the carboxylic acid,resulting in a bright visible orange-yellow light from dark brown under a 365 nm ultraviolet lamp.Under the optimum conditions,the fluorescence intensity of [Ir(bzq),2,(L1)](PF,6,) probe showed a good linear relationship with hypochlorite in the concentration range of 0.1-210 µmol/L,with a detection limit of 3.08 nmol/L.The selective and competitive experiments revealed that this probe showed better selectivity and sensitivity for ClO,-, than that for other ions.The proposed method was applied to the detection of ClO,-, in local river samples with satisfactory recoveries of 92.4%-103%,suggesting that the fluorescent probe could be used for analysis of ClO,-, in practical samples.
荧光探针铱配合物次氯酸盐合成应用
fluorescent probeiridium complexhypochloritesynthesisapplication
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