...
首页> 外文期刊>Journal of the Brazilian Chemical Society >Quantum confinement in PbI2 nanodisks prepared with cucurbit[7]uril
【24h】

Quantum confinement in PbI2 nanodisks prepared with cucurbit[7]uril

机译:葫芦[7] uril制备的PbI2纳米盘中的量子限制

获取原文
           

摘要

This work presents an alternative route for the preparation of heavy metal iodide nanoparticles, particularly lead iodide nanodisks (ca. 50-340 × 7 ?, diameter × thickness), using the macrocycle cucurbit[7]uril as a synthetic template and stabilizing agent. These nanoparticles exhibit an optical-gap blue shift consistent with their small size and 1D quantum confinement. Their thicknesses are compatible with an exfoliated single layer of lead iodide, indicating that cucurbit[7]uril, preventing the stacking and formation of tactoids, thus limiting nanoparticles growth in the z direction. The structure, morphology and properties of these disks were analyzed by X-ray powder diffractometry (XRD), UV-Visible spectroscopy, atomic force microscopy (AFM), scanning electron microscopy with analysis of energy dispersive X-ray fluorescence (SEM-EDS) and high resolution transmission electron microscopy (HRTEM).
机译:这项工作提出了使用大环葫芦[7]尿嘧啶作为合成模板和稳定剂制备重金属碘化物纳米粒子,特别是碘化铅纳米盘(约50-340×7 ?,直径×厚度)的另一种方法。这些纳米粒子显示出与它们的小尺寸和一维量子限制一致的光学间隙蓝移。它们的厚度与剥落的碘化铅单层相容,表明葫芦[7]尿嘧啶,阻止了触针的堆积和形成,从而限制了纳米颗粒在z方向的生长。通过X射线粉末衍射(XRD),紫外可见光谱,原子力显微镜(AFM),扫描电子显微镜以及能量色散X射线荧光分析(SEM-EDS)分析了这些盘的结构,形态和性能。和高分辨率透射电子显微镜(HRTEM)。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号