[18p-M_101-1~7] 12.8 Specific theme: Photoelectric Properties, Device Fabrication and Structural Controls of Organic-Inorganic Hybrid Perovskites

3:45 PM - 4:00 PM JST(6:45 AM - 7:00 AM UTC)

[18p-M_101-7] Water-Chromic Behavior of Poly(methyl methacrylate)–Perovskite Nanocrystal Composite Films

〇Hinako Ebe¹, Rintaro Ishikawa², Jun Matsui¹ (1.YamagataUniv. Fac.Sci., 2.YamagataUniv.,)

Keywords:

Perovskite nanocrystals,Water-responsive hydrochromism,Polymer composite films

Halide lead perovskite nanocrystals (PNCs) are promising water-responsive luminescent materials, but their rapid degradation in aqueous environments limits practical use. Here, we developed a water-responsive hydrochromic film composed of PNCs embedded in a porous poly(methyl methacrylate) (PMMA) matrix. The PMMA–PNC films were fabricated via a one-pot process, in which porous structures formed through solvent evaporation, enabling rapid water permeation. Coordination interactions between PMMA carbonyl groups and Pb²⁺ ions suppressed precursor leakage. The films exhibited reversible luminescence quenching upon water immersion and recovery after drying, even after repeated cycles, demonstrating their potential for water-sensing applications.