Herein, we demonstrated a strategy to regulate the conductivemetal–organicframework (MOF) surface, by the conjugated molecule wires for selective and sensitive determination of dopamine (DA) in the live brain. The MOFs were decorated at the carbon fiber electrode deposited by Au nanoleaves as the upper electric transducer to provide rich electrocatalytic sites for electron transfer of neurochemicals
在此,我们展示了一种通过共轭分子线调节导电金属有机骨架 (MOF) 表面的策略,用于选择性和灵敏地测定活脑中的多巴胺 (DA)。MOFs装饰在由Au nanoleaves沉积的碳纤维电极上作为上电传感器,为电极表面神经化学物质的电子转移提供了丰富的电催化位点,从而大大提高了检测神经化学物质的灵敏度。另一方面,共轭分子线 4-(thiophen-3-ylethynyl)-benzaldehyde (RP1) 被合成并组装为基础桥,以调节基于 MOF 的电极的电化学过程,特别是减少吉布斯反应DA氧化自由能,从而选择性地促进 DA 从 MOF 层到电极表面的异质电子转移。由于 DA 氧化的电催化活性,本发明的微传感器在 0.004-0.4 μM 范围内具有良好的线性关系,具有高选择性,可实时跟踪 DA,检测限为 1 nM。最终,该功能化电极成功应用于帕金森病 (PD) 模型小鼠大脑中 DA 的体内监测。结果表明,在急性和亚急性
Synthesis, Structure, and Spectroscopy of Phenylacetylenylene Rods Incorporating<i>meso</i>-Substituted Dipyrrin Ligands
作者:Sara R. Halper、Seth M. Cohen
DOI:10.1002/chem.200305041
日期:2003.10.6
The synthesis, structure, and spectroscopic characterization of a series of phenylacetylenylene rodlike molecules containing dipyrromethene (dipyrrin) ligands are described. The combination of the phenylacetylenylene groups with the porphyrinogenic dipyrrin moieties results in a rich absorption spectroscopy for these compounds, although the fluorescence of the phenylacetylenylene moiety is quenched