【摘要】 在分析现有光子计数技术的基础上,提出了基于多通道光子计数的单态氧(1O2)发光检测技术.利用光电倍增管H10330-45和多通道计数器MSA-300,成功开发了用于检测1O2发光的系统.实验测量了3种卟啉类光敏剂喜泊分、血啉甲醚和癌光啉在二甲基甲酰胺中的1O2发光时间分辨光谱,并得到了它们的1O2寿命分别为:11.31±0.06,10.88±0.06,11.65±0.07μs.结果表明多通道计数器可应用于检测1O2近红外发光.更多还原

【Abstract】 Based on the analysis of the existing photon counting techniques,multiscaler technique was proposed for singlet oxygen(1O2) luminescence measurement.Moreover,a new detection system was developed for the direct measurement of 1O2 luminescence,which consists of a photomultiplier tube module H10330-45 and a multichannel scaler MSA-300.The time-resolved 1O2 luminescence spectra at 1 270 nm for Hiporfin,HMME and PsD-007 in air-saturated dimethylformamide were measured,and the 1O2 lifetimes were determined to be about 11.31±0.06,10.88±0.06 and 11.65±0.07 μs,respectively.The obtained results indicated that the photon counting technique with multichannel scaler is suitable for the 1O2 luminescence detection.更多还原