Novel optical trace oxygen sensors based on platinum(II) and palladium(II) complexes with 5,10,15,20-meso-tetrakis-(2,3,4,5,6-pentafluorphenyl)-porphyrin covalently immobilized on silica-gel particles
Novel optical trace oxygen sensors based on platinum(II) and palladium(II) complexes with 5,10,15,20-meso-tetrakis-(2,3,4,5,6-pentafluorphenyl)-porphyrin covalently immobilized on silica-gel particles
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DOI：
10.1016/j.aca.2011.01.057
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发表时间：
2011-03-25
影响因子：
6.2
通讯作者：
Klimant, Ingo
中科院分区：
文献类型：
--
作者：
Borisov, Sergey M.;Lehner, Philipp;Klimant, Ingo
新型的微量氧光学传感器是基于5，10，15，20-meso-tetrakis-(2，3，4，5，6-pentafluorphenyl)-porphyrin的铂(II)和钯(II)络合物，它们共价连接在氨基修饰的硅胶颗粒表面。染料掺杂的硅胶颗粒分散在硅橡胶中。斯特恩-伏尔默曲线呈现线性响应，发光强度和衰减时间几乎相同。其他功能包括高光稳定性和快速响应时间(类似于气相中的150ms)。基于钯(II)络合物的传感器显示出更高的灵敏度(在25℃时K(SV)约为67kPa(-1))，动态范围为0.02-100Pa.铂(II)络合物的灵敏度明显降低(K(SV)=3.7-4.2kPa(-1)，动态范围为0.3-1000pa)。该传感器可适用于啤酒厂、水锅炉和海洋研究(氧气最低限度区域的监测)。(C)2011爱思唯尔B.V.保留所有权利。
New optical sensors for trace amounts of oxygen are based on platinum(II) and palladium(II) complexes of 5,10,15,20-meso-tetrakis-(2,3,4,5,6-pentafluorphenyl)-porphyrin covalently attached to the surface of amino-modified silica-gel particles. The dye-doped silica-gel particles are dispersed in silicone rubber. The Stern-Volmer plots show linear response and are virtually identical for either luminescence intensity and decay time. Other features include high photostability and rapid response times (similar to 150 ms in gas phase). The sensors based on the palladium(II) complex show significantly higher sensitivity (K(SV) about 67 kPa(-1) at 25 degrees C) with the dynamic range from 0.02 to 100 Pa. The sensitivity of the platinum(II) complexes is significantly lower (K(SV) =3.7-4.2 kPa(-1), dynamic range 0.3-1000 Pa). The sensors can be suitable for application in breweries, water boilers and for marine research (monitoring of oxygen minimum zones). (C) 2011 Elsevier B.V. All rights reserved.