Abstract

The effects of a heavy-atom salt on the room-temperature solid-matrix luminescence properties of the (±)-<i>trans</i>-7,8-dihydroxy-<i>anti</i>-9,10-epoxy-7,8,9,10-tetrahydrobenzo[<i>a</i>]pyrene-DNA adducts [(±)-<i>anti</i>-BPDE-DNA adductsl and benzo[<i>a</i>]pyrene-<i>r</i>-7,<i>t</i>-8,9,<i>c</i>-10-tetrahydrotetrol (tetrol I-1) on several solid matrices were investigated. TlNO₃ was found to be very effective in enhancing the room-temperature phosphorescence of the (±)-<i>anti</i>-BPDE-DNA adducts and tetrol I-1. However, the room-temperature fluorescence signals were quenched from the (±)-<i>anti</i>-BPDE-DNA adducts and tetrol I-1 on the solid matrices with the heavy-atom salt. It was found that 1% α-cyclodextrin/TlNO₃, 10% trehalose/TlNO₃, and 30% TlNO₃/sodium acetate (NaOAc) yielded very strong RTP signals from the (±)-<i>anti</i>-BPDE-DNA adducts. The greatest enhancement of the RTP intensities from the (±)-<i>anti</i>-BPDE-DNA adducts was achieved with 30% TlNO₃/NaOAc. In addition, a very low limit of detection (0.14 fmole/mg) for tetrol I-1 was acquired with 30% TlNO₃/NaOAc. With its tremendous enhancement of RTP signals from the adducts and tetrol I-1 and the sub-femtomole limit of detection obtained for tetrol I-l, 30% TlNO₃/NaOAc is ideal for the characterization and analysis of DNA adducts and their tetrol products.

Polymeric Matrices for Organic Phosphors*

Nicholas Geacintov, Gerald Oster, and Thomas Cassen
J. Opt. Soc. Am. 58(9) 1217-1229 (1968)

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)

Site occupancy and luminescence properties of Eu³⁺ in double salt silicate Na₃LuSi₃O₉

Jianbang Zhou, Liujing Xie, Jiuping Zhong, Hongbin Liang, Jianhui Zhang, and Mingmei Wu
Opt. Mater. Express 8(4) 736-743 (2018)

Cationic lipid binding control in DNA based biopolymer and its impacts on optical and thermo-optic properties of thin solid films

Woohyun Jung, Hwiseok Jun, Seongjin Hong, Bjorn Paulson, Yoon Sung Nam, and Kyunghwan Oh
Opt. Mater. Express 7(11) 3796-3808 (2017)

Luminescence and photosensitivity of gadolinium labeled hematoporphyrin monomethyl ether

Peng Wang, Feng Qin, Li Wang, Fajun Li, Yangdong Zheng, Yunfei Song, Zhiguo Zhang, and Wenwu Cao
Opt. Express 22(3) 2414-2422 (2014)