Citation: Wen-Yan Huang, Li-Hong Cai, Di-Feng Yang, Jun-Jiang Pu, Shengchang Xiang, Jia-Qi Wang, Zhangjing Zhang. Solvent-triggered reversible transformation of 2D supramolecular polymorphic silver cluster assembled materials for tailoring photoluminescence and photothermal conversion effect[J]. Chinese Chemical Letters, ;2026, 37(11): 111856. doi: 10.1016/j.cclet.2025.111856 shu

Solvent-triggered reversible transformation of 2D supramolecular polymorphic silver cluster assembled materials for tailoring photoluminescence and photothermal conversion effect

Wen-Yan Huang ^{a, 1} ,
Li-Hong Cai ^{a, 1} ,
Di-Feng Yang ^a ,
Jun-Jiang Pu ^a ,
Shengchang Xiang ^a ,
Jia-Qi Wang ^{a, b, *,} ,
Zhangjing Zhang ^{a, *,}

a.
Fujian Provincial Key Laboratory of Polymer Materials, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, China
b.
State Key Laboratory of Structural Chemistry Fujian Institute of Research the Structure of Matter Chinese Academy of Sciences, Fuzhou 350002, China

wangjq@fjnu.edu.cn

zzhang@fjnu.edu.cn

Received Date: 12 August 2025
Revised Date: 10 September 2025
Accepted Date: 17 September 2025
Available Online: 18 September 2025

Figures(5)

We present the first example of reversible polymorphism in 2D Ag cluster-based layered structures constructed from Cl@Ag₁₆(^tBuS)₈(CF₃COO)₇ nodes (Ag₁₆) connected by μ₄-TPPE linkers. The two polymorphs (Ag₁₆-TPPE-a & Ag₁₆-TPPE-b) further individually adopt orthorhombic and monoclinic crystalline forms, which can also be reversibly transformed to each other by virtue of tuning inter-layer C−H···F interaction through altering solvent system. Correspondingly, inter-layer C−H···F forces and dense stacking arrangement in Ag₁₆-TPPE-a substantially restricts the molecular rotations or vibrations of TPPE and thus considerably facilitates the radiative transitions in the crystalline state, leading to enhancement in photoluminescence intensity, PLQY, and lifetime. Notwithstanding, benefiting from the suppression of photoluminescence, Ag₁₆-TPPE-b exhibits higher photothermal conversion efficiency. This work provides a valuable approach for layer-sliding-driven tailoring photoluminescence and photothermal conversion effect in 2D supramolecular polymorphic silver cluster assembled materials.
- Coinage metal clusters,
- Ag clusters,
- Supramolecular polymorphs,
- Solvent-responsive framework,
- Cluster-based MOF
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