Scholarlink

<p>The conventional design of metal-organic frameworks (MOFs) with room-temperature phosphorescence (RTP) mostly relies on using heavy metals, as the heavy atom effect can effectively increase the efficiency of intersystem crossing (ISC) to get a better phosphorescence performance. For the first time, we reported the highly efficient RTP of a lithium-based MOF IMU-101 with a lifetime (<i>τ</i>) of 299 ms and a quantum yield (QY) of 4.91%. In addition, MOFs IMU-102 and IMU-103, with sodium and cesium as metal nodes, were successfully synthesized. The phosphorescence properties of this series of alkali metal MOFs were systematically studied and compared. The crystallography and computational calculation show that the mechanism for achieving RTP for this material lies in the ultrashort coordination bond of Li, which enables the reduction of non-radiative transitions. IMU-101, as a cheap and environmentally friendly room-temperature phosphorescent material, has been further developed into composite polymer inks and bulk materials. This makes them promising for applications in anti-counterfeiting and information encryption.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Li, Na, and Cs-based metal-organic frameworks for room temperature phosphorescence applications

  • 期刊论文

  • 发表日期：

    2025年1月7日

查看全文
  • Jiaqi Ma,
  • Rui Feng,
  • Yanyuan Jia,
  • Mingshi Zhang,
  • Shuo Guo

摘要

The conventional design of metal-organic frameworks (MOFs) with room-temperature phosphorescence (RTP) mostly relies on using heavy metals, as the heavy atom effect can effectively increase the efficiency of intersystem crossing (ISC) to get a better phosphorescence performance. For the first time, we reported the highly efficient RTP of a lithium-based MOF IMU-101 with a lifetime (τ) of 299 ms and a quantum yield (QY) of 4.91%. In addition, MOFs IMU-102 and IMU-103, with sodium and cesium as metal nodes, were successfully synthesized. The phosphorescence properties of this series of alkali metal MOFs were systematically studied and compared. The crystallography and computational calculation show that the mechanism for achieving RTP for this material lies in the ultrashort coordination bond of Li, which enables the reduction of non-radiative transitions. IMU-101, as a cheap and environmentally friendly room-temperature phosphorescent material, has been further developed into composite polymer inks and bulk materials. This makes them promising for applications in anti-counterfeiting and information encryption.