Instituto de Química, Universidade de São Paulo, CEP 05508-000 São Paulo, Brazil.
Instituto de Química, Universidade de São Paulo, CEP 05508-000 São Paulo, Brazil.
Spectrochim Acta A Mol Biomol Spectrosc. 2021 Nov 15;261:119997. doi: 10.1016/j.saa.2021.119997. Epub 2021 May 24.
Inspired on the outstanding behavior of the BODIPY dye, a new fluorescent boron fluoride derivative of the classical 2,2'-dihydroxy-1,1'-naphtalazine or YELLOW 101 dye has been synthesized and investigated in this work. Analogously to YELLOW 101 (λ = 510 nm), the new species, here denoted BYELLOW 101, exhibits strong fluorescence around 570 and 535 nm in the solid form and in organic solvents, respectively. The observed red shift of the luminescence emission can be explored in the superparamagnetic fluorescent materials employed in MPI (magnetic particle inspection) technology, decreasing the influence of the FRET mechanism, - a critical limitation in this type of system. BYELLOW 101 is stable in solid form, but in organic solvents, it hydrolyses very slowly regenerating the initial dye, keeping the fluorescence emission but exhibiting a small blue shift along the time.
受 BODIPY 染料优异性能的启发，我们合成了一种新型的荧光硼氟化物衍生物，它是经典的 2,2'-二羟基-1,1'-萘嗪或 YELLOW 101 染料的类似物。与 YELLOW 101（λ=510nm）类似，新化合物在固态和有机溶剂中分别在 570nm 和 535nm 左右表现出强烈的荧光。这种发光发射的红移可以在 MPI（磁性粒子检测）技术中使用的超顺磁荧光材料中得到利用，从而降低 FRET 机制的影响，这是该类系统中的一个关键限制。BYELLOW 101 在固态下稳定，但在有机溶剂中会缓慢水解生成初始染料，保持荧光发射，但随着时间的推移会出现小的蓝移。
