Low Optical Loss and Bent Waveguides: Crystals of a One-Dimensional Pt 1 Ag 14 Nanocluster

作者：Chuanjun Zhou, Wei Huang, Kaiyang Kuang, Zhuoyuan Li, Shuang Chen, Yan Kuai, Manzhou Zhu · 发表于：ACS Nano · 年份：2025 · DOI：10.1021/acsnano.5c00359 · 被引用次数：16 · 研究领域：Nanocluster Synthesis and Applications、Gold and Silver Nanoparticles Synthesis and Applications、Graph theory and applications

Photoluminescent nanoclusters are promising materials for optical waveguides. However, their photon transmission under mechanical stress is very challenging. Here, we report an low-loss metallic nanocluster crystal, [Pt 1 Ag 14 (DPPP) 6 Cl 4 ](SbF 6 ) 2 (DPPP = 1,3-bis(diphenylphosphino) propane), which exhibits stable optical performance with an optical loss coefficient of 7.15 × 10 –4 dB·μm –1 ─lower than most reported inorganic, organic, and hybrid materials. The Pt 1 Ag 14 crystals maintain excellent optical stability under mechanical deformation, with an optical loss difference of only 0.15 × 10 –3 dB·μm –1 before and after mechanical stress. Reasonable molecular design endows Pt 1 Ag 14 crystals with robust mechanical flexibility, resulting in their bending radius being smaller than that of nanocluster crystals with similar structures. Structural analysis has shown that multiple π···π, C–H···π, and C–H···F intra- and intermolecular interactions originating from the ligands and between the ligands and counterions ensure molecular and crystal stability under mechanical stress. Metallic nanocluster crystals with low loss and mechanical flexibility generated by rational molecular design offer promising candidates in the fields of active waveguides and flexible electronic materials.