Fiber-optic microsensors for simultaneous sensing of oxygen and pH, and of oxygen and temperature
Fiber-optic microsensors for simultaneous sensing of oxygen and pH, and of oxygen and temperature
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DOI：
10.1021/ac070514h
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发表时间：
2007-11-15
影响因子：
7.4
通讯作者：
Wolfbeis, Otto S.
中科院分区：
文献类型：
--
作者：
Kocincova, Anna S.;Borisov, Sergey M.;Wolfbeis, Otto S.
已开发出尖端直径接近140微米的光纤微型传感器，可以分别同时测量溶解氧(DO)和pH值，以及DO和温度M。光纤的尖端覆盖有基于发光微珠的传感器组合物，该发光微珠通过衰减时间、其发光强度或两者的变化来响应相应的参数。微珠的使用使信号的比率易于改变，降低了指示染料之间的荧光能量转移的风险，并减少了氧敏珠中产生的单线态氧的不利影响。对DO/pH传感器进行了化学修饰。
Fiber-optic microsensors with a tip diameter of similar to 140 mu m have been developed that enable simultaneous measurement of dissolved oxygen (DO) and pH, and of DO and temperature M, respectively. The tip of the optical fiber was covered with sensor compositions based on luminescent microbeads that respond to the respective parameters by a change in the decay time, intensity of their luminescence, or both. The use of microbeads enables the ratio of the signals to be easily varied, reduces the risk of fluorescence energy transfer between indicator dyes, and reduces the adverse effect of singlet oxygen that is produced in the oxygen-sensitive beads. The sensor chemistry for DO/pH was modified.