A novel multifunctional near-infrared absorbing dye for Hg2+ recognition

摘要：

　　A novel near-infrared absorbing colorimetric sensor with multifunctional groups, bis-dibenzo-18-crown-6 squaraine (BCSQ), has been identified and applied for accurate Hg2+ analysis based on the decrement of its UV absorbance (ΔA) in the aqueous medium.The proposed method was successfully applied to analyse synthetic Hg2+ samples and natural Hg2+ samples.The results show that the linear range of Hig2+ detection in aqueous medium is 7.5~150× 10-8 mol·L-1 with a correlation coefficient (R) of 0.9983 and a limit of detection (3σ, n=20) of 5.6 × 10-9 mol·L-1.The relative standard deviation (R.S.D.) for Hg2+ detection was lower than 2.4% (n=5).The proposed method possesses the advantages of simplicity, rapidity, high selectivity and sensitivity.

关键词： Bis-dibenzo-18-crown-6 squaraine Near infrared Ratiometric sensors Recognition Hg2+

作者: Lei Hu Yafei Zhang Fangkuo Wang Zhengquan Yan

作者单位: Anhui Provincial Laboratory of Biomimetic Sensor and Detecting Technology & Department of Material and Chemical Industry,West Anhui University,Luan 237012,China

会议类型: 国际会议

会议名称: 2012 China Functional Materials Technology and Industry Forum(2012中国功能材料科技与产业高层论坛)(CFMTIF2012)

会议地点: 昆明

会议语种:英文

页码: 460-464

在线出版日期: 2012-11-09（万方平台首次上网日期，不代表论文的发表时间）