Thermo‐ and Mechano‐Triggered Luminescence ON/OFF Switching by Supercooled Liquid/Crystal Transition of Platinum(II) Complex Thin Films
نویسندگان
چکیده
Trihexyltetradecylphosphonium (P6,6,6,14) salts of luminescent anionic Pt(II) complexes, (P6,6,6,14)[PtX2(ppy)] (X = Cl-, Br-; ppy 2-phenylpyridinate), are synthesized and photofunctional thin films with crystal/liquid bi-stability fabricated. In particular, the chloride complex provides a film exhibiting thermo- mechano-triggered luminescence ON/OFF switching at ambient temperature, which is based on control supercooled liquid phase bright crystalline phase. The photophysical properties complexes investigated compared those bromide tetra(n-butyl)ammonium complexes. Furthermore, detailed analysis reveals large contribution charge-transfer character to ligand-centered 3π π* excited state, results in intense phosphorescence crystal high-contrast by transition complex.
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ژورنال
عنوان ژورنال: Advanced Optical Materials
سال: 2022
ISSN: ['2195-1071']
DOI: https://doi.org/10.1002/adom.202102614