Modulation of sensitivity to mechanical stimulus in mechanofluorochromic properties by altering substituent positions in solid-state emissive diiodo boron diiminates

摘要: This manuscript describes modulation of the sensitivity to mechanical forces in diiodo boron diiminates by altering substituent position iodine groups. A series modified complexes were prepared, and their solid-state luminescence properties based on aggregation crystallization-induced emission mechanisms observed. By adding crystalline samples each complex, changes optical monitored. Interestingly, peak shift degree bands was varied. From X-ray crystallographic analyses, it shown that molecular distributions crystal packing significantly depended positions groups complex. In particular, found increasing dihedral angles between phenyl substituents boron-containing six-membered ring, a larger width obtained. Finally, most planar conformation detected from complex insensitive forces. It suggested intramolecular electronic conjugation initial state could be responsible for shift. is first example, best our knowledge, offer regulation structural isomers with same chemical component.