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Coordination-Driven Pyridine Capture in a Solid-State Zn(II) Complex for Rapid and Reversible Turn-On
Sotaro Kusumoto1, Kazuki Nakahama1, Kouta Karube1
1Department of Applied Chemistry, Faculty of Chemistry and Biochemistry, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama221-8686, Japan.
Abstract:
A Zn(II) hydrazone complex undergoes reversible, coordination-driven pyridine capture in the solid state, producing rapid vapochromic and turn-on vapoluminescent responses. Interconversion between ZnL2 and ZnL2(Py) increases the photoluminescence quantum yield from 5.86% to 25.4% by inducing rigidity and suppressing nonradiative decay. This work demonstrates that reversible guest coordination is a powerful strategy for controlling solid-state luminescence and for designing VOC-responsive sensing materials.
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