申请人:Minnesota Mining and Manufacturing Company
公开号:US05409666A1
公开(公告)日:1995-04-25
A sensor for measuring the concentration of an analyte in a medium is disclosed. In one embodiment, the sensor comprises a sensing element including a matrix material and, covalently bonded thereto, one or more monomeric indicator components each of which is capable of providing a first emitted signal of a given wavelength in response to being exposed to an excitation signal. The sensing element is capable of providing a second emitted signal having a longer wavelength than the first emitted signal or signals in response to being exposed to the excitation signal, the second emitted signal being provided by an excimer component produced in the sensing element from the monomeric indicator component(s) and being dependent on the concentration of the analyte in the medium to a greater extent than the first emitted signal or signals. In another embodiment, the sensor comprises a sensing element including two or more different monomeric components at least one of which is a monomeric indicator component capable of providing a first emitted signal in response to being exposed to a first excitation signal. The sensing element is capable of providing a second emitted signal in response to being exposed to a second excitation signal. This second emitted signal is provided by an exciplex produced from the monomeric components. This second emitted signal is preferably dependent on the concentration of the analyte in the medium. An excitation assembly is positioned and adapted to provide the excitation signal to the sensing element. A detector assembly is positioned and adapted to detect the second emitted signal. Preferably, a processor assembly is positioned and adapted to analyze the second emitted signal in determining the concentration of the analyte in the medium.
本文介绍了一种用于测量介质中分析物浓度的传感器。在一种实施例中,该传感器包括一个感应元件,其中包括一个基质材料和与之共价键合的一个或多个单体指示剂组分,每个单体指示剂组分都能够在暴露于激发信号下提供给定波长的第一发射信号。感应元件能够在暴露于激发信号下提供比第一发射信号更长波长的第二发射信号,第二发射信号是由单体指示剂组分在感应元件中产生的激基元件提供的,并且比第一发射信号更大程度地依赖介质中分析物的浓度。在另一种实施例中,该传感器包括一个感应元件,其中包括两个或两个以上不同的单体组分,其中至少一个是单体指示剂组分,能够在暴露于第一激发信号下提供第一发射信号。感应元件能够在暴露于第二激发信号下提供第二发射信号。这个第二发射信号是由单体组分产生的激聚物提供的。这个第二发射信号最好是依赖于介质中分析物的浓度。激发组件被定位和适应于向感应元件提供激发信号。检测器组件被定位和适应于检测第二发射信号。最好,处理器组件被定位和适应于分析第二发射信号以确定介质中分析物的浓度。