| 초록 |
In this work, through simple and time efficient two-step process, highly luminescent PeNCs could be obtained in nano domain of BCP photonic crystal (PC) films. Structural color of BCP PCs is changed by crosslinking concurrently with crystallization of PeNCs. Firstly, Thin PS-b-P2VP PC films are immersed in ethanol containing one of the precursors of perovskite. The precursor is bonded in P2VP domain by Lewis acid-base interaction with N of pyridine ring and concurrently crosslink P2VP domain, resulting in blue-shift of photonic bandgap of BCP PCs. In the second step, the other precursor is cast on the PS-b-P2VP films. Then, precursors in P2VP domain were combined to form perovskite, leading to P2VP domain recover to initial state of photonic bandgap. Combining PL of PeNCs and structural color of BCP PCs, dual-responsive anticounterfeiting devices which can decrypt informations by two kinds of stimuli, ultraviolet light and liquids are achieved. |
