Presentation Information
[18a-PB1-1]Direct Visualization of Reaction Intermediate States in Anthracene-Derivatives Crystals under Dual Photo–Thermal Control
〇Yuto Hino1, Takumi Matsuo1, Shotaro Hayashi1 (1.Kochi Univ. of Tech.)
Keywords:
Solid-state photoreaction,Organic crystals,Single-crystal X-ray diffraction
To directly visualize the transition between bonded and non-bonded states in solids, we designed photoreactive anthracene-based molecular crystals enabling structural capture of reaction intermediates. Under temperature-controlled conditions, solid-state photoreactions were kinetically separated and regulated by white LED irradiation, and their progress was quantitatively monitored via vibrational-mode analysis using micro-Raman spectroscopy. Furthermore, single-crystal X-ray diffraction analysis of reaction intermediate states was successfully performed, revealing for the first time a mixed-crystal (solid-solution) phase, representing a kinetically trapped reaction-intermediate state in which the initial and final structures coexist. This study establishes a photo–thermal dual-control framework that links reaction kinetics with intermediate-state formation, offering a new design principle for controlling bond formation in molecular solids.