使用有机芳族溶剂,环己烷,DMSO,乙醇和乙酸乙酯,获得了一种新型的基于尿嘧啶的蒽有机胶凝剂。通过场发射扫描电子显微镜和透射电子显微镜进一步表征。具体而言,伴随着胶凝剂的破坏,所得到的有机凝胶被证明是对氟离子具有高灵敏度和选择性的有希望的比色和荧光传感器。光谱研究和1 H NMR滴定实验表明,氢原子在N上的去质子化氟离子在尿嘧啶部分的位置是识别事件的原因,证据是在加入少量质子溶剂甲醇后立即从溶胶相转变为凝胶态。该过程是可逆的,即使经过五次运行,传感活性和溶胶-凝胶转化能力的损失也为零。
使用有机芳族溶剂,环己烷,DMSO,乙醇和乙酸乙酯,获得了一种新型的基于尿嘧啶的蒽有机胶凝剂。通过场发射扫描电子显微镜和透射电子显微镜进一步表征。具体而言,伴随着胶凝剂的破坏,所得到的有机凝胶被证明是对氟离子具有高灵敏度和选择性的有希望的比色和荧光传感器。光谱研究和1 H NMR滴定实验表明,氢原子在N上的去质子化氟离子在尿嘧啶部分的位置是识别事件的原因,证据是在加入少量质子溶剂甲醇后立即从溶胶相转变为凝胶态。该过程是可逆的,即使经过五次运行,传感活性和溶胶-凝胶转化能力的损失也为零。
New Route to Unsymmetrical 9,10-Disubstituted Ethynylanthracene Derivatives
作者:Gilles Argouarch、Frédéric de Montigny、Claude Lapinte
DOI:10.1055/s-2005-918512
日期:——
The preparation of new organic compounds bearing ethynylanthracene fragments is described, and an original pathway for the selective synthesis of unsymmetrical 9,10-diethynylanthracenes is given. The synthesis of some 9-ethynyl-10-substituted anthracene derivatives is also reported.
Cooperative Effect of Spacer and Lewis Base on Highly Reversible Spectral Changes of the Octaethylporphyrin Chromatic System in Sensitivity, Stability, and Visibility to Trifluoroacetic Acid
The diacetylene-group connected chromatic system of [octaethylporphyrin]-[spacer]-[Lewis base] triads (OEP-SPC-LB) was conclusively studied, in which a trigger-like interaction of the terminal LB with trifluoroacetic acid (TFA) dramatically affects the inherent electronic properties of OEP. The 1H NMR, IR, and electronic absorption spectral properties of these OEP derivatives were examined, and were contemplated