Optimal discrimination threshold for the detection of singlet oxygen luminescence

摘要：

Direct detection of singlet oxygen (1O2) luminescence around 1270 nm is the golden standard of1O2 identification. In this study, the effect of the discrimination threshold on the detection of 1O2 luminescence that generated from the photoirradiation of Rose Bengal (RB) was evaluated by using a selfdeveloped photon-counting detection system. The obtained results show that the discrimination threshold for photon counting has a significant impact on the intensity and shape of the measured 1O2 luminescence, which resulted in the variation of 1O2 lifetimes. The optimal discrimination threshold is determined to be about -0.0412 V, and the corresponding1O2 lifetime in air-saturated distilled water is 4.26±0.06 us.

作者: Defu Chen Huiyun Lin Yi Shen Buhong Li Shusen Xie

作者单位: Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, Fujian Provincial Key Laboratory for Photonics Technology, Fujian Normal University, Fujian 350007, China

会议类型: 国际会议

会议名称: The 9th International Conference on Photonics and Imaging in Biology and Medicine(第九届生物医学光子学与成像技术国际学术研讨会 PIBM 2010)

会议地点: 武汉

会议语种:英文

页码: 1-5

在线出版日期: 2010-11-02（万方平台首次上网日期，不代表论文的发表时间）