Scholarlink

<p>Structural vacancies in crystalline solids have great potential in tuning optoelectronic properties for specific applications. However, the random distribution of vacancies is still an intractable problem when creating materials with completely reproducible functions. Here, we report that the growth of crystals from solution approaching perfect single crystallization of assembled silver clusters (<b>SC-1</b>, where SC denotes single crystal), featuring a two-dimensional (2D)-three-dimensional (3D) interpenetrating conformation. By controlling the ultraviolet (UV) irradiation time, <b>SC-1</b> transformed into <b>SC-2-0.8</b> and then into <b>SC-2-0.5</b>, where partial trifluoroacetic acid (TFA) and the linker molecules (1,2,4,5-tetracyanobenzene, termed TCNB) possessed a 0.8 or 0.5 occupancy in the crystallography, forming ordered vacancies at specific sites. This course led to a deepened color, a diminished photoluminescence, a narrowed energy gap, and an average 50-fold increase in the single-crystal electron conductivity, together with a 3D-3D interpenetrating conformation. Over time, under the original conditions, <b>SC-1</b> regrew into <b>SC-3</b>, which had a 3D noninterpenetrating conformation with no crystallographic vacancies and a conductivity similar to that of <b>SC-1</b>. This work elucidates the correlation between the tunable vacancy number and electrical conductivity at the atomic level, providing a method for facilitating electronic communication between cluster-building units and creating ordered-vacancy conducting materials.</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

Photo-controlled vacancies and conductivity within single crystals of silver chalcogenolate cluster-based MOFs

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年7月1日

查看全文
  • Kai Ma,
  • Xue-Mei Liu,
  • Xi-Yan Dong,
  • Xi-Ming Luo,
  • Hai-Yang Li,
  • Shuang-Quan Zang,
  • Thomas C. W. Mak

摘要

Structural vacancies in crystalline solids have great potential in tuning optoelectronic properties for specific applications. However, the random distribution of vacancies is still an intractable problem when creating materials with completely reproducible functions. Here, we report that the growth of crystals from solution approaching perfect single crystallization of assembled silver clusters (SC-1, where SC denotes single crystal), featuring a two-dimensional (2D)-three-dimensional (3D) interpenetrating conformation. By controlling the ultraviolet (UV) irradiation time, SC-1 transformed into SC-2-0.8 and then into SC-2-0.5, where partial trifluoroacetic acid (TFA) and the linker molecules (1,2,4,5-tetracyanobenzene, termed TCNB) possessed a 0.8 or 0.5 occupancy in the crystallography, forming ordered vacancies at specific sites. This course led to a deepened color, a diminished photoluminescence, a narrowed energy gap, and an average 50-fold increase in the single-crystal electron conductivity, together with a 3D-3D interpenetrating conformation. Over time, under the original conditions, SC-1 regrew into SC-3, which had a 3D noninterpenetrating conformation with no crystallographic vacancies and a conductivity similar to that of SC-1. This work elucidates the correlation between the tunable vacancy number and electrical conductivity at the atomic level, providing a method for facilitating electronic communication between cluster-building units and creating ordered-vacancy conducting materials.