Participating Group (2020-2021)
Construction of Selective Responsive Soft Crystals by Weak-stimuli Based on Pillar-Shaped Macrocyclic Compounds
Research Outline
To develop designed soft crystals, it is important to clarify how external stimuli input into soft crystals and the soft crystals exhibit the response. This researcher has developed pillar-shaped macrocyclic compounds “pillar[n]arenes” （Structure of pillar[n]arenes）. Pillar[n]arenes form host-guest complexes with alkane vapors because of their electron rich cavity. But, pillar[n]arene crystals are colorless solids; thus, we cannot detect encapsulation of alkane vapor. We have discovered that crystals of functionalized pillar[n]arene which contains one benzoquinone unit that endows the molecule with alkane-vapor-induced vapochromic properties (Vapochromic behavior of pillar[5]arene with one benzoquinone unit). In this study, we will expand soft crystal chemistry using pillar[n]arenes. The research subjects are (1) development of pillar[n]arene with vapor-responsive fluorescence by introducing -conjugated units into pillar[n]arenes and (2) chiral vapor detection using planar chirality of pillar[n]arenes
Participating Group (2018-2019)
Construction of Weak-stimuli Responsive Soft Crystals Based on Pillar-Shaped Macrocyclic Compounds
Research Outline
To develop designed soft crystals, it is important to clarify how external stimuli input into soft crystals and the soft crystals exhibit the response. This researcher has developed pillar-shaped macrocyclic compounds “pillar[n]arenes” （Structure of pillar[n]arenes）. Pillar[n]arenes form host-guest complexes with alkane vapors because of their electron rich cavity. But, pillar[n]arene crystals are colorless solids; thus, we cannot detect encapsulation of alkane vapor. We have discovered that crystals of functionalized pillar[n]arene which contains one benzoquinone unit that endows the molecule with alkane-vapor-induced vapochromic properties (Vapochromic behavior of pillar[5]arene with one benzoquinone unit). In this study, we will expand soft crystal chemistry using pillar[n]arenes. The research subjects are (1) development of pillar[n]arene with vapor-responsive fluorescence by introducing -conjugated units into pillar[n]arenes and (2) chiral vapor detection using planar chirality of pillar[n]arenes