Issue 31, 2005

Oxygen sensing materials based on mesoporous silica MCM-41 and Pt(ii)–porphyrin complexes

Abstract

The preparation and properties of luminescent oxygen sensing materials based on two Pt(II)–porphyrin complexes: platinum meso-tetrakis(4-N-methylpyridyl)porphyrin (PtTMPyP4+) and platinum meso-tetrakis(4-N-pyridyl)porphyrin (PtTPyP) assembled in mesoporous silica (MCM-41) are described. The luminescence of Pt(II)–porphyrin/MCM-41 assembly materials can be extremely quenched by molecular oxygen with good sensitivity (I0/I100 > 7) and rapid response times (<1 s) suggest that the Pt(II)–porphyrin/MCM-41 system can be used for developing oxygen sensors. PtTMPyP4+/MCM-41 (20 mg g−1) exhibits very high sensitivity (I0/I100 > 50). Even when the concentration of oxygen is 1%, the luminescence intensity of PtTMPyP4+/MCM-41 (20 mg g−1) can be quenched by 83.33%.

Graphical abstract: Oxygen sensing materials based on mesoporous silica MCM-41 and Pt(ii)–porphyrin complexes

Supplementary files

Article information

Article type
Paper
Submitted
08 Mar 2005
Accepted
10 Jun 2005
First published
27 Jun 2005

J. Mater. Chem., 2005,15, 3181-3186

Oxygen sensing materials based on mesoporous silica MCM-41 and Pt(II)–porphyrin complexes

H. Zhang, Y. Sun, K. Ye, P. Zhang and Y. Wang, J. Mater. Chem., 2005, 15, 3181 DOI: 10.1039/B503336E

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