@article{10272/20863,
year = {2019},
url = {http://hdl.handle.net/10272/20863},
abstract = {Four new dyes that derive from borylated arylisoquinolines were prepared, containing a third aryl residue (naphthyl, 4-methoxynaphthyl, pyrenyl or anthryl) that is linked via an additional stereogenic axis. The triaryl cores were synthesized by Suzuki couplings and then transformed into boronic acid esters by employing an Ir(I)-catalyzed reaction. The chromophores show dual emission behavior, where the long-wavelength emission band can reach maxima close to 600 nm in polar solvents. The fluorescence quantum yields of the dyes are generally in the range of 0.2–0.4, reaching in some cases values as high as 0.5–0.6. Laser-flash photolysis provided evidence for the existence of excited triplet states. The dyes form fluoroboronate complexes with fluoride anions, leading to the observation of the quenching of the long-wavelength emission band and ratiometric response by the build-up of a hypsochromically shifted emission signal.},
organization = {Funding by the Spanish Ministry of Economy, Industry, and
Competitiveness (CTQ2014-54729-C2-1-P for U.P., CTQ2013-
48164-C2-1-P and CTQ2013-48164-C2-2-P for A.R., Ramón y
Cajal contracts RYC-2013-12585 for A.R. and RYC-2015-
17737 for I.V.), the Spanish Ministry of Science, Innovation,
and Universities (CTQ2017-89832-P for U.P., CTQ2016-
78875-P for M.C.J., and CTQ2017-89416-R for I.V.), the European Research and Development Fund, and the Andalusian
Government (2012/FQM-2140 for U.P., 2009/FQM-4537 and
2012/FQM-1078 for A.R) is gratefully acknowledged.},
publisher = {Beilstein-Institut},
title = {Arylisoquinoline-derived organoboron dyes with a triaryl skeleton show dual fluorescence},
doi = {10.3762/bjoc.15.254},
author = {Fernandes Pais, Vania Cristina and Neumann, Tristan and Vayá, Ignacio and Jiménez Molero, María Consuelo and Ros, Abel and Pischel, Uwe},
}