Abstract

The solid-matrix fluorescence (SMF) quenching of (±)-anti-benzo[a]pyrene-trans-7,8-dihydrodiol-9,10-epoxide (BPDE)-DNA adducts and a hydrolysis product of the DNA adducts, tetrol I-1, were investigated by using thallium nitrate and sodium iodide to quench the SMF. Several fluorescence quenching models were evaluated for both (±)-anti-BPDE-DNA adducts and tetrol I-1. The SMF quenching phenomena were quite different with the two salts for the (±)-anti-BPDE-DNA adducts and tetrol I-1. Generally, with thallium nitrate as a quencher, a two-site model with two independent quenching sites was applicable to both the (±)-anti-BPDE-DNA adducts and tetrol I-1 data. However, with sodium iodide, the SMF quenching data for tetrol I-1 were fit to the sphere of action model, but the (±)-anti-BPDE-DNA adducts SMF quenching data were qualitatively related to a BET isotherm. From the SMF quenching data, unique information was acquired for the quasi-intercalated BPDE-DNA adducts and the external form of the BPDE-DNA adducts. In addition, insights were obtained on how the adsorbed salts interacted with the solid matrix and with the (±)-anti-BPDE-DNA adducts and tetrol I-1.

Quenching of two-photon fluorescence and stimulated anti-Stokes emission in rhodamine solutions

H. J. Eichler, D. Langhans, and U. Klein
Appl. Opt. 18(9) 1383-1386 (1979)

Microdroplet temperature calibration via thermal dissociation of quenched DNA oligomers

Eric W. Hall and Gregory W. Faris
Biomed. Opt. Express 5(3) 737-751 (2014)

Fluorescence quenching of osthole by silver nanoparticles

Hongyan Zhao, Feng Song, Jun Zhang, Fengxiao Wang, Jiadong Liu, and Yanling Liu
J. Opt. Soc. Am. B 30(9) 2387-2392 (2013)

Fluorescence enhancement of hemicyanines bound to DNA or DNA-complex and their application to dye laser

Yuki Suzuki and Yutaka Kawabe
Opt. Mater. Express 7(6) 2062-2068 (2017)

Concentration Quenching of Nd³⁺ Fluorescence

Jackson S. Stroud
Appl. Opt. 7(5) 751-757 (1968)