Login / Signup

Redox-Active Mixed-Linker Metal-Organic Frameworks with Switchable Semiconductive Characteristics for Tailorable Chemiresistive Sensing.

Xiao-Cheng ZhouCheng LiuJian SuYi-Fan LiuZhangyan MuYamei SunZhi-Mei YangShuai YuanMengning DingJing-Lin Zuo
Published in: Angewandte Chemie (International ed. in English) (2023)
Metal-organic frameworks (MOFs), with diverse metal nodes and designable organic linkers, offer unique opportunities for the rational engineering of semiconducting properties. In this work, we report a mixed-linker conductive MOF system with both tetrathiafulvalene and Ni-bis(dithiolene) moieties, which allows the fine-tuning of electronic structures and semiconductive characteristics. By continuously increasing the molar ratio between tetrathiafulvalene and Ni-bis(dithiolene), the switching of the semiconducting behaviors from n-type to p-type was observed along with an increase in electrical conductivity by 3 orders of magnitude (from 2.88×10 -7  S m -1 to 9.26×10 -5  S m -1 ). Furthermore, mixed-linker MOFs were applied for the chemiresistive detection of volatile organic compounds (VOCs), where the sensing performance was modulated by the corresponding linker ratios, showing synergistic and nonlinear modulation effects.
Keyphrases
  • metal organic framework
  • ionic liquid
  • air pollution
  • high resolution
  • squamous cell carcinoma
  • sentinel lymph node
  • lymph node
  • radiation therapy
  • mass spectrometry
  • label free
  • neoadjuvant chemotherapy