Patterning, morphing, and coding of gel composites by direct ink writing

Sui, Yuan; Li, Caicong; Feng, Shiyu; Ling, Yao; Liu, Cong; Wu, Xiaosong; Shen, Jinghui; Song, Jian; Peng, Hailong; Huang, Weiguo

doi:10.1039/d0ta12275k

Cited by 8 publications

(7 citation statements)

References 44 publications

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“…This multi-regulation capability endows the luminescent materials with versatility, especially showing bright prospects in information storage and anti-counterfeiting. [51,[135][136][137][138][139] Hence, integrating multiple stimuli responsiveness into one 3D code system can be a key direction for the development of variable 3D code systems. Multiple responsiveness means that the pattern of 3D codes can be transformed via diverse methods.…”

Section: Multiple-responsive 3d Codesmentioning

confidence: 99%

“…A method named direct ink writing (DIW) was designed by Huang, Peng, Feng, and their co‐workers to construct the functional gels based on poly(penta fluorophenyl) acrylate (pPFPA) using alkylamines as the ink and a capillary as the pen, thereby accomplishing multi‐functional patterns on gels by a concise and effective means. [ 136 ] Due to the aminolysis reaction between pPFPA and alkylamine, various functional groups can be incorporated into the gel network via DIW using the alkylamine derivatives with expected functional groups as the inks, thereby endowing the resultant gels with numerous appealing properties. Three inks consisting of 1,3‐propyldiamine functionalized rhodamine B (RA), Dansyl Hydrazine (DH), and 3‐bromo propylamine functionalized coumarin (CA), respectively, were utilized to construct the responsive fluorescent blocks with corresponding red, cyan, and blue emissions ( Figure a).…”

Section: Multiple‐responsive 3d Codesmentioning

confidence: 99%

“…e) The data decryption outputs based on the "max pooling" algorithm from the gel codes treated with different "erasure" methods. a-e) Reproduced with permission [136]. Copyright 2021, Royal Society of Chemistry.…”

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confidence: 99%

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

Lou

Zhang

et al. 2022

Adv Funct Materials

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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.

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Section: Multiple-responsive 3d Codesmentioning

confidence: 99%

Section: Multiple‐responsive 3d Codesmentioning

confidence: 99%

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

Lou

Zhang

et al. 2022

Adv Funct Materials

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“…Information camouflage and decryption is of particular importance in industry, , electronics, , military projects, , imaging technique, , and human life. , Therefore, the development of effective materials for information camouflage and decryption is essential. Smart hydrogels that are capable of changing their color in response to external stimuli such as pH, , ultraviolet light, , and chemical reactions , can be used for information camouflage and decryption. − Achieving this function normally requires the introduction of specific chemical groups into cross-linking hydrogel networks. For example, a urease was included in a network to endow the corresponding hydrogel with capability of color variation for multistage information protection .…”

Section: Introductionmentioning

confidence: 99%

Swelling-Induced Information Camouflage and Optical Decryption on a Transparent Recoverable Hydrogel Surface

Yan

Qiu

et al. 2022

ACS Appl. Mater. Interfaces

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Information camouflage and decryption on hydrogels rely on chemical stimuli such as pH, ultraviolet light, and chemical reactions, in which the cyclability is limited. This work develops a simpler yet effective physical method that can achieve the information camouflage on hydrogels by water swelling and decrypt it under white light. The information camouflage and decryption can proceed with unlimited cycles. To successfully reach the information camouflage, the hydrogel is synthesized with the water swelling ratio in weight as high as 250, which is enabled by the strong electrostatic repulsion of cationic moieties inside the network. At such a high water-swollen state, the hydrogel is still robust and elastic, which provides a mechanical basis to maintain the stability of the camouflaged information. We write information on the hydrogel surface by laser cutting. Upon immersing the hydrogel in water, the high swelling results in huge expansion of the hydrogel, thus inducing the information camouflage. With exposure to white light, the information can be decrypted and becomes visible again. Our protocol utilizes a simple physical process to enable the camouflage and decryption of complex information, which might open an alternative pathway for the development of hydrogel materials in the application of informatics.

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“…In particular, anticounterfeiting in information transmission, currency circulation, identity recognition, and branded products is a challenging task . To date, many kinds of anticounterfeiting materials have been developed, including anticounterfeiting paper, quick response codes, holographic labels, etc . Although these materials can effectively prevent counterfeiting, the defects, such as being easy to copy or requiring expensive equipment, limit their further application.…”

Section: Introductionmentioning

confidence: 99%

Modulation of the Host–Guest–Guest Interactions in a Metal–Organic Framework for Multiple Anticounterfeiting Applications

Ren

Yang

et al. 2021

Inorg. Chem.

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Developing fluorescent materials with multiple and tunable emissions under different conditions is necessary to meet the growing demand for optical anticounterfeiting technology. Different modes of fluorescence emission can be obtained by loading multiple fluorescent components into metal–organic frameworks (MOFs) and modulating the interaction among them for multiple anticounterfeiting purposes. Herein, a Cd-based MOF (HNU-60) was constructed as a host to encapsulate both lanthanide ions and carbon quantum dots. Multiple fluorescence emissions can be achieved by modulation of host–guest and guest–guest interaction, which holds promise for multiple anticounterfeiting applications. This work opens the opportunity to construct the hybrid MOF-based materials with controlled fluorescence properties for emerging anticounterfeiting applications in various fields.

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Patterning, morphing, and coding of gel composites by direct ink writing

Abstract: Many creatures gain unique patterns on their bodies, which not only represent their distinct characteristics but also endow diverse functionalities that are crucial to their survival. Though being common in...

Cited by 8 publications

References 44 publications

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

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

Swelling-Induced Information Camouflage and Optical Decryption on a Transparent Recoverable Hydrogel Surface

Modulation of the Host–Guest–Guest Interactions in a Metal–Organic Framework for Multiple Anticounterfeiting Applications

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