| 초록 |
To fabricate the security materials with simultaneous manipulation of both transparency and luminescence, a monopyrene-based dendron (mPLD) was newly designed and synthesized. Based on the fundamental phase-transition behavior and the microscopic structure analysis, mPLD has polymorphic superstructures, which is determined by the competition between intermolecular interactions (H-bonding and π−π interaction). There are significant changes in optical properties of mPLD due to the polymorphic superstructure. The transparency and luminescence of mPLD can be tuned by processing method and external stimuli. Optical switching of luminescent materials caused by controlling the molecular packing structure via kinetic control can be a great way for developing secret ink. This work was supported by Basic Research Laboratory Program (2020R1A4A1018259) and Ministry of Trade, Industry, and Energy (20011031). |
