RT Journal Article
T1 Red-Emitting Tetracoordinate Organoboron Chelates: Synthesis, Photophysical Properties, and Fluorescence Microscopy.
A1 Pais, Vânia F
A1 Ramírez-López, Pedro
A1 Romero-Arenas, Antonio
A1 Collado, Daniel
A1 Nájera, Francisco
A1 Pérez-Inestrosa, Ezequiel
A1 Fernández, Rosario
A1 Lassaletta, José M
A1 Ros, Abel
A1 Pischel, Uwe
AB Seven tetracoordinate organoboron fluorophores with heterobiaryl N,O- or N,N-chelate ligands were prepared and photophysically characterized (in toluene). The electronic variation of the heteroaromatic moiety provided a means for the fine-tuning of the UV/vis absorption and emission spectra. In the most interesting cases, the spectra were red-shifted to maximum absorbance at wavelengths longer than 500 nm and emission maxima between 620 and 660 nm. The pronounced intramolecular charge-transfer character of the dyes yielded large Stokes shifts (3500-5100 cm-1), while maintaining appreciable fluorescence quantum yields of up to 0.2 for emission maxima longer than 600 nm. The lipophilic character of the dyes enabled their application as stains of vesicle substructures in confocal fluorescence microscopy imaging.
YR 2016
FD 2016-09-30
LK http://hdl.handle.net/10668/10492
UL http://hdl.handle.net/10668/10492
LA en
DS RISalud
RD Apr 11, 2025