Asymmetric Restriction of Intramolecular Rotation in Chiral Solvents

• DOI: 10.1021/acs.cgd.6b00128
• Publication Date: 2016-03-31T13:51:03Z
• Authors: Young-Jae Jin; Hyojin Kim; Jong Jin Kim; Nam Ho Heo; Jong Won Shin; Masahiro Teraguchi; Takashi Kaneko; Toshiki Aoki; Giseop Kwak
• Keywords: Chirality; Optical Rotation; Axial Chirality

Commercially available molecular rotor (MR) compounds were recrystallized using chiral monoterpenes as solvents. The resulting crystals exhibited large circular dichroism signals with opposing signs according to the handedness of solvent used. X-ray crystallographic analysis showed that chirality originated from asymmetric restriction intramolecular rotation in crystals. also highly emissive due restricted bond rotation, while solutions materials almost nonemissive. solvent-to-MR transfer approach crystallization discussed herein should be a convenient, universal way obtain