The solid-state synchronous vs. conventional fluorescence spectroscopy and complementary methods to study the interactions of aluminum metal-organic framework Basolite A100 with dimethyl sulfoxide
The solid-state synchronous vs. conventional fluorescence spectroscopy and complementary methods to study the interactions of aluminum metal-organic framework Basolite A100 with dimethyl sulfoxide
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DOI：
10.1016/j.jlumin.2019.01.062
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发表时间：
2019-06-01
影响因子：
3.6
通讯作者：
Samokhvalov, Alexander
中科院分区：
文献类型：
--
作者：
Grinnell, Cole;Samokhvalov, Alexander
本文首次报道了金属有机骨架（MOF）与二甲亚砜（DMSO）相互作用的实验研究。铝MOF Basolite A100吸附DMSO，形成化学计量络合物[A100](2)[DMSO](3)。固态同步荧光光谱可以观察到Basolite A100及其吸附配合物[A100]（2)[DMSO](3)中以下主要的激发/发射跃迁，这些跃迁在“传统”荧光光谱中不能很好地解决：1）孤立的BDC连接体的窄共振，2)跨光学带隙的激发，以及3)准分子。在吸附配合物[A100](2)[DMSO](3)中，DMSO分子通过p-p体系与Basolite A100的mu(2)-OH基团及其BDC连接体相互作用。我们首次提出了固态同步荧光光谱的新变种，我们称之为固态增强分辨率同步荧光（激发）光谱。采用固态增强分辨率同步荧光（激发）光谱法精确测量了吸附配合物[A100](2)[DMSO](3)和Basolite A100的光学带隙的微小变化。
We report, for the first time, an experimental study of interaction of metal-organic framework (MOF) with dimethyl sulfoxide (DMSO). Adsorption of DMSO on aluminum MOF Basolite A100 results in formation of the stoichiometric complex [A100](2)[DMSO](3). The solid-state synchronous fluorescence spectroscopy allows observation of the following major excitation/emission transitions in Basolite A100 and its adsorption complex [A100](2)[DMSO](3) which are not well-resolved in "conventional" fluorescence spectra: 1) narrow resonance of the isolated BDC linker, 2) excitation across optical bandgap, and 3) excimers. In the adsorption complex [A100](2)[DMSO](3), the DMSO molecules interact with the mu(2)-OH group of Basolite A100 and with its BDC linker through the p-p system. We present, for the first time, the new variety of the solid-state synchronous fluorescence spectroscopy, which we denote as the solid-state enhanced-resolution synchronous fluorescence (excitation) spectroscopy. The accurate measurements of small changes in the optical bandgap of the adsorption complex [A100](2)[DMSO](3) and Basolite A100 are described by the solid-state enhanced-resolution synchronous fluorescence (excitation) spectroscopy.