Preparation and spectroscopic properties of multiluminophore luminescent oxygen and temperature sensor films
Preparation and spectroscopic properties of multiluminophore luminescent oxygen and temperature sensor films
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DOI：
10.1021/la050997p
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发表时间：
2005-09-27
期刊：
影响因子：
3.9
通讯作者：
Schanze, KS
中科院分区：
文献类型：
--
作者：
Köse, ME;Carroll, BF;Schanze, KS
一种新型的发光氧和温度传感器已被开发出来，它利用了两种发光染料，即5,10,15,20 - 四（五氟苯基）卟啉铂（II）（PtTFPP，氧传感器）和二氯化三（1,10 - 菲啰啉）钌（II）（Ruphen，温度传感器）。这两种染料分散在一种由4 - 叔丁基苯乙烯（tBS）和甲基丙烯酸2,2,2 - 三氟乙酯（p - tBS - co - TFEM）的共聚物组成的透氧聚合物粘结剂中。为了减轻p - tBS - co - TFEM粘结剂中两种发光染料之间的能量转移和其他猝灭相互作用，Ruphen温度传感器被封装在聚丙烯腈（PAN）聚合物纳米球中，这些纳米球是通过从N,N - 二甲基甲酰胺溶液中使PAN和Ruphen共沉淀制备的。通过发射光谱对传感器膜发射的温度和气压响应进行了全面表征。两种发光染料的发射在光谱上很好地分离。Ruphen发射的强度随温度变化很大（约为1.4%/℃），而PtTFPP发射的强度随温度和气压变化。这种双染料发光涂层可用作压敏涂料（PSP），其中Ruphen温度传感器的发射用于校正PtTFPP传感器压力响应的温度依赖性。为了演示PSP应用，使用CCD相机对涂有传感器的试样进行成像，并通过强度比方法分析CCD图像。还对一种含有三种染料的传感器进行了光谱研究，以证明在传感器中同时包含强度参考染料以及温度和压力染料的可行性。
A new luminescent oxygen and temperature sensor has been developed that utilizes two luminescent dyes, 5,10,15,20-tetrakis(pentafluorophenyl)porphyrin platinum(II) (PtTFPP, the oxygen sensor) and tris(1, 10-phenanthroline)ruthenium(II) dichloride (Ruphen, the temperature sensor). The two dyes are dispersed in an oxygen-permeable polymer binder consisting of a copolymer of 4-tert-butylstyrene (tBS) and 2,2,2-trifluoroethyl methacrylate (p-tBS-co-TFEM). To alleviate energy transfer and other quenching interactions between the two luminescent dyes in the p-tBS-co-TFEM binder, the Ruphen temperature sensor is encapsulated in polyacrylonitrile (PAN) polymer nanospheres that are prepared by coprecipitation of PAN and Ruphen from N,N-dimethylformamide solution. The temperature and air-pressure response of the emission from the sensor film is fully characterized by using emission spectroscopy. The emission from the two luminescent dyes is spectrally well-separated. The intensity of the Ruphen emission varies strongly with temperature (similar to 1.4% degrees C-1), whereas the intensity of the PtTFPP emission varies with temperature and air pressure. The two-dye luminescent coating is useful as a pressure-sensitive paint (PSP), where the emission from the Ruphen temperature sensor is used to correct for the temperature dependence of the pressure response of the PtTFPP sensor. To demonstrate the PSP application, a coupon coated with the sensor was imaged using a CCD camera, and the CCD images were analyzed by intensity ratio methods. Spectroscopic studies were also carried out on a sensor that contains three dyes in order to demonstrate the feasibility of including an intensity reference dye along with the temperature and pressure dyes into the sensor.