With the advent of the big
data era, information storage and security are becoming increasingly important.
However, high capacity information storage and multilevel anti-counterfeiting
are typically difficult to simultaneously achieve. To
address this challenge, herein, two electrochromic and electrofluorochromic
dual-functional polymers with aggregation-induced emission (AIE) features are
skillfully designed. Upon application of voltage, the absorption and
fluorescence spectra of the two polymers can undergo reversible changes,
accompanying with the variation of appearance color and emission. By utilizing the controllable
characteristics of polymers, the dual-mode display devices are
fabricated via a simple spraying method. More interestingly, the color code
device was elaborately constructed by adding color change multiplexing to two-dimensional space,
thereby achieving high capacity information storage. Moreover, the color code
device can also be applied in the multilevel anti-counterfeiting areas. The encrypted
information can be dynamically converted under different voltages. The AIE
polymers show great promise in the applications of
multidimensional information storage and dynamic anti-counterfeiting and the
design strategy may
provide a new path for advanced information storage and high security
technology.<br><div><br></div>
Simultaneously achieving high capacity storage and multilevel anti-counterfeiting using electrochromic and electrofluorochromic dual-functional AIE polymers
