Investigation of the Mechanism Behind Conductive Fluorescent and Multistimuli‐responsive Li
<sup>+</sup>
‐enriched Metallogel Formation
作者:Jay Shukla、Yeeshu Kumar、Manish K. Dixit、Chinthakuntla Mahendar、Vinay K. Sharma、Abul Kalam、Mrigendra Dubey
DOI:10.1002/asia.202000630
日期:2020.10
of chelation enhanced fluorescence (CHEF) phenomenon. Further, the participation of CHEF followed by aggregation‐caused quenching (ACQ) and aggregation‐induced emission (AIE) in the gelation process have been well established by fluorescence experiments. Transmission electron microscopy (TEM) analysis disclosed the sequential creation of nanonuclei followed by nanoballs and their alignment towards the
荧光metallogel(w / v的2.6%)已经从两个非荧光组分获得即。苯丁二酸衍生的配体H 2 PSL和LiOH(2当量),在DMF中。李+离子不仅通过聚集在胶凝中起关键作用,而且还通过限制激发态分子内质子转移(ESIPT)以及随后螯合增强荧光(CHEF)现象的产生,对增强荧光做出了贡献。此外,通过荧光实验已经很好地确定了CHEF的参与,随后的聚集引起的猝灭(ACQ)和聚集诱导的发射(AIE)。透射电子显微镜(TEM)分析揭示了依次形成纳米核,随后形成纳米球,以及它们分别对准直径分别约为3、31和40 nm的纤维的生成。通过扫描电子显微镜(SEM)进一步证明了金属原料中存在长距离纤维形态。流变学研究显示成金属胶体具有真正的凝胶相材料性质。奈奎斯特(Nyquist)阻抗研究显示,金属对电极的电阻值为7.4kΩ,在施加超声波后,电阻值增加至8.5kΩ,而70°C的高温导致电阻值减小至4.