Al-Harby Jameelah, Tar Haja, Al-Hazmy Sadeq M
Department of Chemistry, College of Science, Qassim University, Buraidah 51452, Saudi Arabia.
Polymers (Basel). 2021 Aug 16;13(16):2743. doi: 10.3390/polym13162743.
The boron difluoride complex is known as an extraordinary class of fluorescent dyes, which has attracted research interest because of its excellent properties. This article reports the optical properties such as absorption, fluorescence, molar absorptivity, and photo-physical parameters like dipole moment, and oscillator strength of new fluorescent organic dye based on boron difluoride complex 2-(1-(difluoroboraneyl)-1,2-dihydroquinolin-2-yl)-2-(1-methylquinoxalin-2-ylidene) acetonitrile (DBDMA). The spectral characterization of the dye was measured in sol-gel glass, photosol-gel, and organic-inorganic matrices. The absorption and fluorescence properties of DBDMA in sol-gel glass matrices were compared with each other. Compared with the classical sol-gel, it was noticed that the photosol-gel matrix is the best one with immobilized DBDMA. In the latter, a large stokes shift was obtained (97 nm) and a high fluorescence quantum yield of 0.5. Special attention was paid to the addition of gold NPs into the hybrid material. The fluorescence emission intensity of the DBDMA with and without gold nanoparticles in different solid media is described, and that displayed organic-inorganic matrix behavior is the best host.
二氟化硼配合物是一类非凡的荧光染料，因其优异的性能而引起了研究兴趣。本文报道了基于二氟化硼配合物2-(1-(二氟硼烷基)-1,2-二氢喹啉-2-基)-2-(1-甲基喹喔啉-2-亚基)乙腈（DBDMA）的新型荧光有机染料的光学性质，如吸收、荧光、摩尔吸光系数，以及光物理参数，如偶极矩和振子强度。在溶胶-凝胶玻璃、光溶胶-凝胶和有机-无机基质中测量了该染料的光谱特征。比较了DBDMA在溶胶-凝胶玻璃基质中的吸收和荧光性质。与传统的溶胶-凝胶相比，发现光溶胶-凝胶基质是固定DBDMA的最佳基质。在后者中，获得了较大的斯托克斯位移（97 nm）和0.5的高荧光量子产率。特别关注了向杂化材料中添加金纳米颗粒的情况。描述了在不同固体介质中有无金纳米颗粒时DBDMA的荧光发射强度，并且显示出有机-无机基质行为的是最佳主体。
