Stimulus-responsive polymer materials toward multi-mode and multi-level information anti-counterfeiting: recent advances and future challenges

Abstract

This review highlights the recent advances and discusses the challenges and perspectives of stimulus-responsive polymer (SRP)-based information-storage materials, which exhibit multi-mode or multi-level anti-counterfeiting performance.

Platinum complexes with aggregation-induced emission

“…Organic materials with multi-stimulus response (MSR) hold great potential in the field of optoelectronics, including applications such as optical data recording, 97 security labeling, 98 chemical sensors, 99–102 biomedical devices, 103,104 and OLEDs. 105 The MSR characteristics are mainly associated with molecular structural transitions, phase changes, excited-state transitions, chemical structures, and synergistic effects.…”

Manipulation of photoresponsive liquid-crystalline polymers and their applications: from nanoscale to macroscale

“…Besides multi-mode static anticounterfeiting, multi-level dynamic anticounterfeiting has become popular recently. 164 Our group has proposed a facile strategy to realize time-dependent anticounterfeiting and double-lock information encryption. 111 Based on the dynamic process upon heating the host–guest film with periodic microstructures at 100 °C, anticounterfeiting labels with a tunable structural color were fabricated.…”

An organohydrogel with tunable fluorescence and shape-memory property for advanced anti-counterfeiting

“…In a time of globalization and technological progress, counterfeiting has become a significant obstacle with far-reaching consequences for various industries, economies, and public welfare. 1–3 The consequences of counterfeiting go beyond economic considerations and include risks to public safety, damage to brand reputation, and the loss of consumer trust. Numerous materials and techniques have been developed to combat counterfeiting and have demonstrated effectiveness in reducing counterfeiting threats, including holograms, 4–6 watermarks, 7–9 Quick Response (QR) codes, 10–12 Radio-Frequency Identification (RFID), 13–15 and fluorescent patterns.…”