Unveiling the electron-phonon coupling anisotropy in 2D covalent organic frameworks.

ABSTRACT: Covalent organic frameworks (COFs) are emerging organic semiconductors with potential for energy conversion and storage. However, their electronic structure and electron-phonon interactions remain poorly understood. This issue is particularly important in 2D COFs, where covalent and van der Waals interactions along orthogonal directions manifest intrinsic anisotropy. In this work, six 2D COFs with varied bond linkages, stacking patterns, and side-group conjugation were synthesized to investigate their electron-phonon interaction properties. The results show that electron-phonon coupling (EPC) exhibits obvious direction dependence. Strong EPC is observed along the interlayer direction, whereas negligible momentum exchange occurs along the in-plane direction. A positive correlation between t

SUBMITTER: Zhang Y 

PROVIDER: S-EPMC12757867 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature