Nanostructured oxygen sensor--using micelles to incorporate a hydrophobic platinum porphyrin.

Nanostructured oxygen sensor--using micelles to incorporate a hydrophobic platinum porphyrin.
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DOI:
10.1371/journal.pone.0033390
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发表时间:
2012
期刊:
影响因子:
3.7
通讯作者:
Meldrum DR
Meldrum DR
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Su F;Alam R;Mei Q;Tian Y;Youngbull C;Johnson RH;Meldrum DR

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Hydrophobic platinum(II)-5,10,15,20-tetrakis-(2,3,4,5,6-pentafluorophenyl)-porphyrin (PtTFPP) was physically incorporated into micelles formed from poly(ε-caprolactone)-block-poly(ethylene glycol) to enable the application of PtTFPP in aqueous solution. Micelles were characterized using dynamic light scattering (DLS) and atomic force microscopy (AFM) to show an average diameter of about 140 nm. PtTFPP showed higher quantum efficiency in micellar solution than in tetrahydrofuran (THF) and dichloromethane (CH2Cl2). PtTFPP in micelles also exhibited higher photostability than that of PtTFPP suspended in water. PtTFPP in micelles exhibited good oxygen sensitivity and response time. This study provided an efficient approach to enable the application of hydrophobic oxygen sensors in a biological environment.
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