基于荧光熄灭的钌络合物高性能溶解氧光极的研制  

A High Sensitivity Dissolved Oxygen Optode Based On Fluorescence Quenching of Ruthenium Complex

作　　者：莫远尧[1] 赵莉[1] 鲁勗琳 王青[1] 段菁华[1] 蔡明发[2] 肖丹[1] 

机构地区：[1]化学生物传感与计量学国家重点实验室,化学化工学院,生物技术研究院,湖南大学 [2]香港浸会大学化学系,中国香港,长沙410082

出　　处：《化学传感器》2002年第4期38-44,共7页Chemical Sensors

摘　　要：该文探讨了一种基于荧光熄灭作用的钌络合物高性能溶解氧传感器的研制。敏感物质是吸附在硅胶60上的[Ru(dpp)_3][(4-Clph_4)B]_2,此络合物对氧的响应在曲线分成两段后符合Stern-Volmer方程,并且具有良好的重现性、高光学稳定性、无滞后和长寿命等特点。光极分别以高亮度蓝色发光二极管(LED)和光敏二极管为光源和检测器,集成在一个塑料模具中,在测量过程中不需消耗氧,灵敏度高、体积小,此光极可实时、在线监测溶解氧浓度。A optode based on fluorescence quenching of[Ru(dpp) 3] [ (4 - Clph4) B]2 absorbed on silica gel by dissolved oxygen is presented. A typical linear Stem - Volmer behavior were obtained for detection of dissolved oxygen at the range of 0- 2 ppm and 2 - 8 ppm, good repro-ducibility, photostability, and long - term stability were also provided. The optode is buildup with an ultra - blue light -emitting diode(LED) and a photodiode, all components were integrated in a plastic support, the optode was an oxygen - consuming free, high sensitive, small size, low - cost system for dissolved oxygen determination.

关 键 词：荧光熄灭 钌络合物 溶解氧光极 发光二极管 光敏二极管 传感器 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]