Information Storage Based on Stimuli‐Responsive Fluorescent 3D Code Materials

Abstract

With the booming of information technology, considerable progress has been witnessed in information storage carriers, accompanied by soaring storage capacity. 3D codes as an emerging information storage carrier has attracted wide attention. However, it is challenging for conventional 3D codes to transform their encoded information, restricting their applications. Due to their rich color characteristics and various stimuli responsiveness, fluorescent materials can be utilized to construct stimuli-responsive 3D code systems that can exhibit pattern changes upon specific external stimuli, thereby realizing information transformation. According to the type of stimuli responsiveness, several kinds of stimuli-responsive 3D code systems are classified and summarized, including pH responsiveness, ion responsiveness, light responsiveness, electricity responsiveness, time responsiveness, some separate stimuli responsiveness, and multiple responsiveness. This review summarizes the recent 3D code systems, elaborates on how they can realize information transformation, analyzes their potential applications, and puts forward some perspectives on further development in this field. The authors anticipate this review can provide guidelines for the design of novel information materials and promote the development of information science and technology.

Mechanical tough and multicolor aggregation-induced emissive polymeric hydrogels for fluorescent patterning

“…Fluorescent polymeric hydrogels (FPHs) are rising stars of luminescent materials that can combine the merits of traditional fluorescent polymers and hydrogels, including responsive fluorescence, tissue-like modulus, intrinsic soft wet nature and so on. [1][2][3][4][5][6] These advantages make FPHs potentially applicable for wide applications ranging from bioimaging and sensing 7,8 to information encryption [9][10][11] and soft robotics. [12][13][14][15] The past two decades have witnessed the development of numerous FPHs on the basis of organic fluorophores, [16][17][18][19][20][21][22][23][24] luminescent metal complexes [25][26][27][28][29][30][31][32] and nanoparticles.…”

Multiple-stimuli-responsive multicolor luminescent self-healing hydrogel and application in information encryption and bioinspired camouflage

“…[5][6][7][8][9][10][11][12] Among these, luminescent polymers have attracted much attention due to their unique optical properties and wide range of applications, including smart displays, [13][14][15] optical sensing, 16,17 soft luminescent actuation, 18,19 information storage, and anticounterfeiting. [20][21][22][23] These materials usually show a change in optical properties in response to an external stimulus (e.g., pH, solvent, temperature, ions, and light). [24][25][26][27] Great efforts have been devoted to designing and developing stimuli-responsive materials.…”

Intelligent Surface with Multi-dimensional Information Enabled by a Dual Responsive Pattern with Fluorescence and Wrinkle

“…Luminescence materials with the ability to encode and decode information have been widely used in many fields like printable ink, labels, and modern currency. − From monochrome to polychromatic and panchromatic, − various tunable luminescence materials regulated by excitation light, chemical reagents, luminescence lifetime, heat, and other stimuli are developed to realize advanced luminescence materials. − Liu et al reported four-level luminescence anti-counterfeiting technology based on two kinds of colorless anti-counterfeiting inks which display fluorescence with different colors, intensity, and lifetime by the irradiation of UV and NIR . However, the preparation process is always complex and costly, and sometimes the color change is momentary and requires specific methods or devices to detect.…”