Related Experiment Video
Updated: Jun 29, 2026

Characterization of Thermal Transport in One-dimensional Solid Materials
Published on: January 26, 2014
Manipulating Thermal Transport of 2D MOFs by Hierarchical Structural Design
Xiaomei Wu1, Sen Lu1, Yuming Wen1
1School of Chemistry, Sun Yat-sen University, Guangzhou, China.
Abstract:
Manipulating the thermal conductivity of 2D metal-organic frameworks (MOFs) via their pre-designable and well-defined structures plays a critical role in their broad applications. Nevertheless, the intricate vibrational structures and nontrivial phonon dynamics of these unconventional organic-inorganic hybrid solid-state materials challenge our understanding on the heat-transport mechanism. Here, by using multiscale simulations with data-driven deep neural-network potential, and taking nickel bis(dithiolene) and its derivatives as examples, we provide a unified understanding on how to modulate thermal conductivity of 2D MOFs by mapping the structure-function relationship. We find that hierarchical structural modifications endow them with both highly tunable thermal conductivities (spanning three orders of magnitude) and controllable anisotropy. Among them, atomic-scale coordination geometry modification, and molecular-level defect and disorder engineering enable a dramatic decline in thermal conductivity. The reason for the former is the strengthened vibrational anharmonicity, while the latter is attributed to the localized and softened vibrational structures. Furthermore, tailoring their phonon mean free path by nano-level size control markedly elevates thermal conductivity. We anticipate that these insights open up new opportunities for rationally designing MOF-based thermal functional materials.
Related Concept Videos
Mechanisms of Heat Transfer II
Mechanism of heat transfer
Mechanisms of Heat Transfer
Conduction, accounting for approximately 3% of body heat loss at rest, is the process of exchanging heat between molecules of two materials in direct contact. This can result in both heat loss and gain. For instance, when the body is submerged in water, which conducts heat 20 times more effectively than air, it can either lose or gain significant heat.
Mechanisms of Heat Transfer I
Thermal expansion and Thermal stress: Problem Solving
To solve the problem, first, identify the known and unknown quantities. The initial length (L) of the bridge is 1275 m, the coefficient of linear expansion (α) for steel is 12 x 10-6/°C, and the change in temperature (ΔT) is 55 °C.
Thermal Sigmatropic Reactions: Overview
Sigmatropic shifts are classified based on an order term [i, j ], where i and j indicate the number of atoms across which each end of the σ bond migrates. Below are examples of a [3,3] sigmatropic shift in 1,5-hexadiene, referred to as...

