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<p>Polymorphism in bi-component crystals has received immense attention in recent times due to their potential in property engineering. Two polymorphs of a functional bi-component molecular solid are derived using Long-range Synthon Aufbau Modules (LSAM) by tuning the nature and position of substituents. The two polymorphs show distinct photochemical properties; <b>Form I</b> undergoes partial <i>cis-trans</i> isomerization, and <b>Form II</b> sustains a [2 + 2] photodimerization. The polymorphic forms also exhibit different photomechanical behaviors. While <b>Form I</b> shows differing photomechanical responses upon UV irradiation based on crystal morphology, <b>Form II</b> undergoes a solid-to-liquid transition upon photo-irradiation.</p><p></p>

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Regulating photoreactivity in a polymorphic bi-component solid through large synthons

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年4月30日

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  • Mollah Rohan Ahsan,
  • Arijit Mukherjee

摘要

Polymorphism in bi-component crystals has received immense attention in recent times due to their potential in property engineering. Two polymorphs of a functional bi-component molecular solid are derived using Long-range Synthon Aufbau Modules (LSAM) by tuning the nature and position of substituents. The two polymorphs show distinct photochemical properties; Form I undergoes partial cis-trans isomerization, and Form II sustains a [2 + 2] photodimerization. The polymorphic forms also exhibit different photomechanical behaviors. While Form I shows differing photomechanical responses upon UV irradiation based on crystal morphology, Form II undergoes a solid-to-liquid transition upon photo-irradiation.