Host–Guest Synergy of Metal–Organic Frameworks for Enhanced Near-Infrared Ultrafast Laser Responsiveness

Abstract

Host–guest metal–organic frameworks (MOFs) offer significant potential and value in regulating and optimizing novel material properties and functionalities, owing to the synergistic effects between the host framework and the guest units. This study reported two silver-based host–guest MOFs, [Ag(ATRZ)(BrO₃)]_n (CMOF-1) and [Ag(ATRZ)_1.5(ClO₄)]_n (CMOF-2), as promising candidates for laser-responsive materials. These materials feature 1D and 3D structures, respectively, comprising Ag-ATRZ cationic MOF frameworks integrated with two distinct oxidizing anionic guests, BrO₃^– and ClO₄^–. CMOF-1 and CMOF-2 are synthesized through straightforward, environmentally benign methods, enabling rapid fabrication. The exceptional near-infrared (NIR) laser responsiveness of CMOF-1 and CMOF-2 was achieved through the modulation of the cationic MOFs (CMOFs) architectures and synergistic interactions between the host and guest components. Moreover, both exhibit ultrafast deflagration-to-detonation transition (DDT) capabilities, alongside excellent thermal stability. This work expands the application scope of host–guest MOFs, and provides an effective strategy for developing high-performance laser-responsive materials.

This study reports Ag-based host−guest MOFs with ultrafast NIR laser responsiveness: CMOF-1 and CMOF-2, which exhibit excellent ultrafast deflagration-to-detonation transition and thermal stability.