A magnetic resonance imaging nanosensor for Hg (II) based on thymidine-functionalized supermagnetic iron oxide nanoparticles

摘要：

　　A MRI nanosensor for Hg (II) was developed based on superparamagnetic iron oxide nanoparticles (SPIO NPs).The detection mechanism is attributed to Hg (II)-induced nanoassembly of thymidinefunctionalized SPIO NPs from a dispersed to an aggregated state with a corresponding decrease in the transverse relaxation time (T2) of adjacent water protons.Furthermore,an enhancement of transverse relaxation rates (1/T2) showed the high selectivity for Hg (II) compared with other transition and main group metal ions.

关键词： MRI nanosensor Hg (II) Thymidine Iron oxide Nanoparticles Transverse relaxation rates

作者: Hong Yang Zhiqing Tian Juanjuan Wang Shiping Yang

作者单位: Department of Chemistry,College of Life and Environmental Science,Shanghai Normal University,No. 100 Shanghai Key Laboratory of Rare Earth Functional Materials,College of Life and Environmental Science

会议类型: 国内会议

会议名称: 第六届全国低场核磁共振技术与应用研讨会

会议地点: 杭州

会议语种:英文

页码: 142-146

在线出版日期: 2014-10-01（万方平台首次上网日期，不代表论文的发表时间）