Abstract

A Room-Temperature Phosphorescence Lifetime Spectrometer (RTPLS) capable of resolving multicomponent intensity decays into separate lifetimes is described. Careful blank subtraction facilitated by a reproducible chopped-xenon arc source and data reduction with the use of nonlinear least-squares reconvolution are major features of the RTPLS. The performance and limitations of the RTPLS were evaluated with synthetic data and prepared samples. Better than 2% RSD was attained for multiple determinations of a single sample. 4-amino-1-naphthalenesulfonate, sodium salt and 2-naphthalenesulfonate, sodium salt both exhibit decays resolvable into two lifetimes when they are coadsorbed with Nal onto filter paper. The approximate ratio of the lifetimes is 1 to 10, and the shorter component is proposed to be a charge transfer complex between the analyte and Nal.

Room temperature phosphorescence from Si-doped-CD-based composite materials with long lifetimes and high stability

Guangqi Hu, Yixuan Xie, Xiaokai Xu, Bingfu Lei, Jianle Zhuang, Xuejie Zhang, Haoran Zhang, Chaofan Hu, Wenshi Ma, and Yingliang Liu
Opt. Express 28(13) 19550-19561 (2020)

Lifetime-tunable green room temperature phosphorescence of carbon dots by the multi-step modification

Jinshu Huang, Jinyang Zhu, Gang Yang, Yongsheng Zhu, Xiumei Xu, and Gencai Pan
Opt. Express 29(25) 41014-41022 (2021)

Tomographic phosphorescence lifetime multiplexing

Anand T. N. Kumar and Steven S. Hou
Opt. Lett. 43(13) 3104-3107 (2018)

Tomographic imaging of oxygen by phosphorescence lifetime

Sovia V. Apreleva, David F. Wilson, and Sergei A. Vinogradov
Appl. Opt. 45(33) 8547-8559 (2006)

Quantitation of cerebral oxygen tension using phasor analysis and phosphorescence lifetime imaging microscopy (PLIM)

Chang Liu, Amanda Chisholm, Buyin Fu, Clover T.-Y. Su, İkbal Şencan, Sava Sakadžić, and Mohammad A. Yaseen
Biomed. Opt. Express 12(7) 4192-4206 (2021)