Identifying the Bottleneck for Heat Transport in Metal–Organic Frameworks

Sandro Wieser, Tomas Kamencek, Johannes P. Dürholt, Rochus Schmid, Natalia Bedoya‐Martínez, Egbert Zojer

Research output: Contribution to journalArticlepeer-review

Abstract

Controlling the transport of thermal energy is key to most applications of metal–organic frameworks (MOFs). Analyzing the evolution of the effective local temperature, the interfaces between the metal nodes and the organic linkers are identified as the primary bottlenecks for heat conduction. Consequently, changing the bonding strength at that node–linker interface and the mass of the metal atoms can be exploited to tune the thermal conductivity. This insight is generated employing molecular dynamics simulations in conjunction with advanced, ab initio parameterized force fields. The focus of the present study is on MOF-5 as a prototypical example of an isoreticular MOF. However, the key findings prevail for different node structures and node–linker bonding chemistries. The presented results lay the foundation for developing detailed structure-to-property relationships for thermal transport in MOFs with the goal of devising strategies for the application-specific optimization of heat conduction.

Original languageEnglish
Article number2000211
JournalAdvanced Theory and Simulations
Volume4
Issue number1
DOIs
Publication statusPublished - Jan 2021

Keywords

  • metal–organic frameworks
  • thermal conductivity
  • thermal interface resistance
  • thermal transport

ASJC Scopus subject areas

  • General
  • Numerical Analysis
  • Statistics and Probability
  • Modelling and Simulation

Fields of Expertise

  • Advanced Materials Science

Cooperations

  • NAWI Graz

Fingerprint

Dive into the research topics of 'Identifying the Bottleneck for Heat Transport in Metal–Organic Frameworks'. Together they form a unique fingerprint.

Cite this