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Zhang Y, Dou Y, Ye Z, Xue W, Liu F, Yan M, Wang W, Yin Y. Visible-Light-Responsive Photoreversible Multi-Color Switching for Rewritable Light-Printing and Information Display. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2310962. [PMID: 38149522 DOI: 10.1002/smll.202310962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 12/13/2023] [Indexed: 12/28/2023]
Abstract
Photoreversible color switching systems (PCSSs) exhibiting multi-color responses to visible light are favored for sustainable societal development over those relying on ultraviolet light due to safer operation and better penetration depth. Here, a PCSS capable of multi-color switching responsive to visible light based on highly photoreductive rutile-phase Sn-doped TiO2-x nanoparticles is reported. The Sn-doping significantly red-shifts the absorption band of the nanoparticles to the visible region, improving charge separation and transfer efficiencies and introducing Ti3+ species and oxygen vacancies as internal sacrificial electron donors for scavenging photogenerated holes. The resulting Sn-doped TiO2-x nanoparticles feature exceptional photoreduction ability and activity, thereby enabling photoreversible color switching of various redox dyes operational under visible light illumination. Furthermore, multi-color switching can be achieved via the color overlay effect by combining different redox dyes in one system, opening the door to many advanced applications, as demonstrated in their successful uses for developing visible-light-driven rewritable multi-color light-printing systems and visual information displays.
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Affiliation(s)
- Yun Zhang
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250024, P. R. China
| | - Yao Dou
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250024, P. R. China
| | - Zuyang Ye
- Department of Chemistry, University of California, Riverside, California, 92521, USA
| | - Wenzhao Xue
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250024, P. R. China
| | - Feng Liu
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250024, P. R. China
| | - Mei Yan
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250024, P. R. China
| | - Wenshou Wang
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250024, P. R. China
| | - Yadong Yin
- Department of Chemistry, University of California, Riverside, California, 92521, USA
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Zhao Z, Dong D, Yu S, Xia S, Duan Y, Liu H, Cheng F, Wang L, Zhu H, He H. A time-multiplexed self-erasing nanopaper for water induced information transmission. J Colloid Interface Sci 2024; 659:127-138. [PMID: 38159489 DOI: 10.1016/j.jcis.2023.12.140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 12/09/2023] [Accepted: 12/21/2023] [Indexed: 01/03/2024]
Abstract
The progressive presentation of multilevel information enhances the security level of information storage and transmission. Here, a time-multiplexed self-erasing nanopaper was developed by integrating cellulose nanofiber (CNF)-stabilized gold nanoclusters and CNF-modified long afterglow materials. The orange fluorescence of gold nanoclusters on nanopaper was regulated by the reversible swelling and shrinking of CNF induced by water solution, while the cyan fluorescence of micron-long afterglow remained stable and acted as the background signal. It was noteworthy that the fluorescence colour and intensity of the nanopaper could be freely adjusted between orange and cyan on the time scale. Therefore, the array information on the nanopaper could be encoded by a water solution, iterated variation as the step-by-step solvent volatilized on the time scale measured by the time of the afterglow duration. This work provides a new approach for constructing time-multiplexed self-erasing nanopaper for confidential information storage and transmission.
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Affiliation(s)
- Zihan Zhao
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, PR China
| | - Die Dong
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, PR China
| | - Shanshan Yu
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, PR China
| | - Siyuan Xia
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, PR China
| | - Yujie Duan
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, PR China
| | - Hui Liu
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, PR China
| | - Fei Cheng
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, PR China
| | - Lei Wang
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, PR China
| | - Hongxiang Zhu
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, PR China.
| | - Hui He
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, PR China.
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Choi J, Hyun J. Hydrochromic film for dynamic information storage using cellulose nanofibers and silica nanoparticles. Carbohydr Polym 2024; 327:121663. [PMID: 38171657 DOI: 10.1016/j.carbpol.2023.121663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 11/06/2023] [Accepted: 12/03/2023] [Indexed: 01/05/2024]
Abstract
A hydrochromic composite film was fabricated by incorporating silica nanoparticles (SiNPs) with cellulose nanofibers (CNFs). The CNF/SiNP composite film underwent a reversible change in transparency in response to external moisture variation. The CNFs improved the dimensional stability of the CNF/SiNP composite film and induced morphological differences in SiNP agglomerates, which control the water vapor condensation in a porous film. The condensed water in the pores reduced the difference in refractive index over the CNF/SiNP film, enhancing its transparency. The selective transparency of the composite film was challenged by printing CNF/SiNP inks at different composition ratios. The differing susceptibility of the printed patterns to moisture provided selective transparency at specific patterns, which can store dynamic information such as QR or numerical codes by simple water vapor adsorption and desorption.
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Affiliation(s)
- Junsik Choi
- Department of Agriculture, Forestry, and Bioresources, Seoul National University, Seoul 08826, Republic of Korea
| | - Jinho Hyun
- Department of Agriculture, Forestry, and Bioresources, Seoul National University, Seoul 08826, Republic of Korea; Department of Biosystems and Biomaterials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea; Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea.
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Eglītis R, Kraukle A, Kaambre T, Šmits K, Ignatāns R, Rubenis K, Šutka A. Nb, Ta and Hf – The tri-dopant tournament for the enhancement of TiO2 photochromism. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2023.114620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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Li X, Zheng W, Zhang Y. The making and breaking of perovskite photochromism through doping. NANOSCALE 2022; 14:12574-12580. [PMID: 36043440 DOI: 10.1039/d2nr03931a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Photochromic single crystals of high transparency are considered as basic building blocks for many advanced applications, such as three-dimensional optical storage and volumetric displays. In this work, a transparent crystal of Cs2AgInCl6 perovskite was grown in a hydrothermal reactor. A high transmittance-contrast degree up to 30% was achieved by photochromism activation via a Mn2+-doping strategy. Intriguingly, both coloration and decoloration could be triggered by light at appropriate wavelengths, 365 nm and 520 nm for example. Unlike heat-induced decoloration, the optical route represents a much faster tool to erase information. As a caveat from photochromism, the photoluminescence quantum yield (PL QY) was significantly decreased down to 1.7%. In an attempt to boost the quantum yield, sodium ions were introduced as a co-dopant. Surprisingly, the co-doping strategy not only boosted the PL QY to 33%, but also deactivated the photochromism. Our work expanded the library of photochromic materials by introducing a new perovskite single crystal, representing a paradigm for the making and breaking of photochromism.
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Affiliation(s)
- Xiuling Li
- Institute for Advanced Interdisciplinary Research (iAIR), University of Jinan, Jinan 250022, Shandong, China.
| | - Wei Zheng
- Institute for Advanced Interdisciplinary Research (iAIR), University of Jinan, Jinan 250022, Shandong, China.
| | - Yuhai Zhang
- Institute for Advanced Interdisciplinary Research (iAIR), University of Jinan, Jinan 250022, Shandong, China.
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A dynamic assembly-induced emissive system for advanced information encryption with time-dependent security. Nat Commun 2022; 13:4185. [PMID: 35858917 PMCID: PMC9300691 DOI: 10.1038/s41467-022-31978-x] [Citation(s) in RCA: 49] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Accepted: 07/13/2022] [Indexed: 12/15/2022] Open
Abstract
The development of advanced materials for information encryption with time-dependent features is essential to meet the increasing demand on encryption security. Herein, smart materials with orthogonal and temporal encryption properties are successfully developed based on a dynamic assembly-induced multicolour supramolecular system. Multicolour fluorescence, including blue, orange and even white light emissions, is achieved by controlling the supramolecular assembly of pyrene derivatives by tailoring the solvent composition. By taking advantage of the tuneable fluorescence, dynamically controlled information encryption materials with orthogonal encryption functions, e.g., 3D codes, are successfully developed. Moreover, time-dependent information encryption materials, such as temporal multi-information displays and 4D codes, are also developed by enabling the fluorescence-controllable supramolecular system in the solid phase, showing multiple pieces of information on a time scale, and the correct information can be identified only at a specified time. This work provides an inspiring point for the design of information encryption materials with higher security requirements.
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Zhang Y, Liu F, Zhao J, Yan M, Wang X, Wang W. Dual pH-/Photo-Responsive Color Switching Systems for Dynamic Rewritable Paper. ACS APPLIED MATERIALS & INTERFACES 2022; 14:5825-5833. [PMID: 35068137 DOI: 10.1021/acsami.1c22306] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Smart color switching materials that can change color with a fast response and a high reversibility have attracted increasing attention in color-on-demand applications. However, most of them can only respond to a single stimulus from their external environment, which dramatically limits their broad applications. To address this problem, we report a new strategy in developing a dual pH-/photo-responsive color switching system by coupling the pH-dependent and redox-driven color switchable neutral red (NR) with photoreductive TiO2-x nanoparticles. The biodegradable TiO2-x nanoparticles/NR/agarose gel film shows a rapid color switching between yellow and red upon stimulation with acidic/basic vapors in more than 20 cycles because of the protonation and deprotonation process of NR. Moreover, the film shows interesting photoreversible color switching properties under both acidic and basic conditions, including a fast response time and a high reversibility. Taking advantage of the excellent dual pH-/photo-responsive color switching properties, we demonstrated the potential applications of the TiO2-x nanoparticles/NR/agarose gel film in dynamic rewritable paper, in which the created patterns by photo-printing produce dynamic color changing upon applying an acidic or a basic vapor. We believe that the result will enable a new path for the development of dual- and even multi-responsive color switching systems, broadening their new applications.
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Affiliation(s)
- Yun Zhang
- National Engineering Research Center for Colloidal Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P. R. China
| | - Feng Liu
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, P. R. China
| | - Jingmei Zhao
- National Engineering Research Center for Colloidal Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P. R. China
| | - Mei Yan
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, P. R. China
| | - Xu Wang
- National Engineering Research Center for Colloidal Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P. R. China
| | - Wenshou Wang
- National Engineering Research Center for Colloidal Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P. R. China
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, P. R. China
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