In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Multifunctional Pt(II)-Based Metallo-Supramolecular Polymer with Carboxylic Acid Groups: Electrochemical, Mechanochemical, Humidity, and pH Response, published in 2020-09-11, which mentions a compound: 12080-32-9, Name is Dichloro(1,5-cyclooctadiene)platinum(II), Molecular C8H12Cl2Pt, Category: alcohols-buliding-blocks.
We report multifunctional Pt(II)-based metallo-supramol. polymer with carboxylic acid groups (polyPtC). The polymer showed multi-stimuli-responsive emission to electrochem. redox, mech. force, humidity, and pH. It also exhibited humidity-responsive ionic conductivity Furthermore, it displayed electrofluorochromism. The emission switching between the two transition states (3MLCT/3LLCT and 3MMLCT) was based on the reversible changes of the interchain Pt-Pt interaction in polyPtC, which was caused by the secondary interaction or the crystalline-amorphous transition. The ionic conductivity of polyPtC was responsible for the humidity and the real-time humidity sensor with the polymer film was demonstrated on interdigitated Pt-electrodes. A solid-state electrochromic device with the polymer film was successfully fabricated to show reversible yellow-to-black electrochromism. In addition, it was revealed by the electrofluorochromic study that the pristine 3MLCT/3LLCT emission was quenched in the electrochem. reduced state (the black state), because the radical anion species of the ligand (tpy·-) generated at the neg. potential caused the repulsion among the polymer chains, expanded the Pt-Pt distance, and prevented the emission.
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