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Synthesis and assembly with mesoporous silica of platinum (II) porphyrin complexes bearing carbazyl groups: Luminescent and oxygen sensing properties

机译:带有咔唑基的铂(II)卟啉配合物的介孔二氧化硅的合成和组装:发光和氧感测特性

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摘要

A series of platinum meso-tetrakis [3-methoxy-4-(N-carbazyl)n-alkyloxyphenyl]porphyrin (Pt-4Cn=TPP, n = 4, 6 and 8) are synthesized. Pt-4C4-TPP, Pt-4C6-TPP and Pt-4C8-TPP exhibit similar luminescent properties in solution and solid state. Three protonated platinum (II) porphyrins are assembled with mesoporous silica MCM-48, respectively, resulting in assembly materials Pt-4Cn-TPP~(4+)/ MCM-48 (n = 4, 6 and 8). The luminescent intensity of Pt-4Gn-TPP~(4+)/MCM-48 can be extremely quenched by molecular oxygen with high sensitivity (/I_0/I_(100) > 9)- The Stern-Volmer plots of these assembly materials display considerable linearity within a wide range of oxygen concentration (0 to 100 percent). The response time is all <= 1 s and recovery time <= 22 s for these assembly materials.
机译:合成了一系列的铂介孔四[3-甲氧基-4-(N-咔唑基)n-烷氧基苯基]卟啉(Pt-4Cn = TPP,n = 4、6和8)。 Pt-4C4-TPP,Pt-4C6-TPP和Pt-4C8-TPP在溶液和固态下均显示相似的发光特性。将三种质子化的铂(II)卟啉分别与中孔二氧化硅MCM-48组装,得到组装材料Pt-4Cn-TPP〜(4 +)/ MCM-48(n = 4、6和8)。 Pt-4Gn-TPP〜(4 +)/ MCM-48的发光强度可以被分子氧以高灵敏度淬灭(/ I_0 / I_(100)> 9)-这些组装材料的Stern-Volmer图显示在很宽的氧气浓度范围内(0%到100%)具有相当大的线性。这些组装材料的响应时间均为<= 1 s,恢复时间<= 22 s。

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