Reversible color modulation of luminescent conjugated polymers based on a chemical redox mechanism and applications in rewritable paper and multiple information encryption

Li, Weijun; Yin, Maoxing; Liu, Jin; Fu, Haichang; Shao, Xiongchao; Dong, Yujie; Song, Qingbao; Zhang, Cheng; Wong, Wai Yeung

doi:10.1039/d2mh00566b

Cited by 12 publications

(7 citation statements)

References 48 publications

(59 reference statements)

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“…3.1.2 Modified molecular structure. Over the past few years, great achievements have been made in modulating the color of organic EC materials by modifying the molecular structure, [76][77][78] which is also considered to be one of the most important strategies to achieve color tuning of EC materials. Using this strategy, a lot of green and yellow EC materials for adaptive color camouflage have been designed and synthesized, such as small organic molecules, [79][80][81][82] metal-organic complexes, 83,84 and conjugated polymers.…”

Section: Ec Materials For Color Camouflagementioning

confidence: 99%

Recent advances in electrochromic materials and devices for camouflage applications

Zhang

Dong

et al. 2023

Mater. Chem. Front.

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Section: Ec Materials For Color Camouflagementioning

confidence: 99%

Recent advances in electrochromic materials and devices for camouflage applications

Zhang

Dong

et al. 2023

Mater. Chem. Front.

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“…Li et al synthesized 3,4-propylenedioxythiophene (ProDOT)-based conjugated polymers that underwent reversible chemical redox reactions in the presence of Fe 3+ and Fe 2+ using the redox concept. The polymer printed paper demonstrated outstanding stability in ambient air at a relative humidity (RH) of 5%–15% and recyclability (writing and erasing) up to 15–20 cycles . From the above discussion, it can be concluded that depending on the nature of the stimuli-responsive moiety, the conditions of writing and erasing can be assessed.…”

Section: Introductionmentioning

confidence: 96%

“…The polymer printed paper demonstrated outstanding stability in ambient air at a relative humidity (RH) of 5%−15% and recyclability (writing and erasing) up to 15−20 cycles. 28 From the above discussion, it can be concluded that depending on the nature of the stimuli-responsive moiety, the conditions of writing and erasing can be assessed. Additionally, it is crucial to form a thin film on a flexible and foldable paper.…”

Section: Introductionmentioning

confidence: 99%

Flexible Multicolor Rewritable Paper Coated with Metallosupramolecular Polymers for Electrochromic Printing and Natural Erasing by Humidity

Zhang,

Jena,

Higuchi

2023

ACS Appl. Polym. Mater.

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Stamping an image on paper with ink is a conventional approach to displaying information. As a next-generation display, stimuli-responsive rewritable paper has attracted considerable attention. In this study, we present an electrical color printing approach using electrochromic (EC) Fe(II) and Ru(II)-based metallosupramolecular polymers (MSPs), which were synthesized via complexation of the metal ions and a chelating terpyridine ligand. The printing method involves a flexible ITO film with a Fe(II)-based MSP layer (an EC film), an erasing unit, and a printing unit. To conduct the writing or erasing process, the erasing unit or the printing unit was stuck on the EC film and an oxidative or reductive potential was applied to the EC layer of the EC film. The printing and erasing of an image were caused by the oxidation state changes between Fe(II) and Fe(III) in the EC layer. After printing, the printed information remained for more than a week due to the memory property of the Fe(III)-based MSP film. The printed information was quickly erased through electrochemical reduction. The rewritable EC film had a subsecond switching time (<1 s) and high stability for repeated writing/erasing more than 2500 times. In addition, it was also found that printed information could be naturally erased under humid conditions. An EC film containing both Fe(II)-and Ru(II)-based MSPs successfully displayed multiple colors by varying the potential application time.

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“…Fluorescence‐based sensors exhibit promising potential in biology, pharmacology, and environmental fields due to their low‐cost, excellent selectivity and sensitivity, quick detection, and low detection limits. [ 19–31 ] Unfortunately, there are currently no fluorescent probes reported to detect propanol solvents, especially for the distinction of propanol isomers. Considering the difference of electron‐withdrawing abilities between isopropanol and n ‐propanol isomers, one of the promising solutions is to design a fluorescent probe that is sensitive to them due to the change of excited state characteristic.…”

Section: Introductionmentioning

confidence: 99%

An Ultra‐Sensitive Fluorescent Probe Based on Hybridized Local and Charge‐Transfer Materials for Quantitative Detection of Propanol Isomers

Zhou

Liu

Chen

et al. 2023

Advanced Optical Materials

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to distinguish propanol isomers such as Lucas test, silver mirror reaction, nuclear magnetic resonance, and Fourier transformed infrared spectrophotometer are usually complex and costly. [11][12][13][14][15] More importantly, these methods can only qualitatively distinguish two isomer solutions, but not quantitatively give out the proportions of propanol isomers components. Owing to their extremely similar physical and chemical properties, the efficient methods to distinguish propanol isomers remain scarce, let alone the quantitatively detection of n-propanol in isopropanol solvent. [16][17][18] Fluorescence-based sensors exhibit promising potential in biology, pharmacology, and environmental fields due to their low-cost, excellent selectivity and sensitivity, quick detection, and low detection limits. [19][20][21][22][23][24][25][26][27][28][29][30][31] Unfortunately, there are currently no fluorescent probes reported to detect propanol solvents, especially for the distinction of propanol isomers. Considering the difference of electron-withdrawing abilities between isopropanol and n-propanol isomers, one of the promising solutions is to design a fluorescent probe that is sensitive to them due to the change of excited state characteristic.Recently, Ma and Yang reported a series of hybridized local and charge-transfer (HLCT) materials. [32][33][34][35][36][37][38][39][40][41][42][43] These novel HLCT emitters simultaneously exhibited the locally-excited (LE) state character and the charge-transfer (CT) state character, guaranteeing both high photoluminescence quantum yields (PLQYs) and stimuli-responsive functionalization. Among them, the non-equivalent hybridization emitter is easy to de-hybridize by external stimulation because of the unbalanced LE and CT components, and thus to exhibit sensing properties with changes in color and emission intensity. [44][45][46][47] It means that the highly efficient fluorescent probe can be expected to achieve through the excited state regulation. [48] What is more, the fluorescence decay of HLCT emitter associates with fast nanosecond process, guaranteeing a high sensitivity and a shortened response time.In this work, we reported a novel fluorescence probe of 4-(acridin-9-yl)-N,N-diphenylaniline (TPA-9AC) to detect propanol isomers with high sensitivity. Theoretical calculations combined with photophysical experiments show that TPA-9AC exhibits non-equivalent hybridization features and high PLQYs.Isopropanol has been widely applied in various fields as an important chemical solvent, which is produced by direct hydration of propylene accompanied with the byproduct of n-propanol. Herein, an ultra-sensitive fluorescent probe of TPA-9AC, based on a non-equivalent hybridized local and charge-transfer (HLCT) material, is designed and synthesized to quantitatively detect the percentage of n-propanol in propanol isomers. Owing to the stronger electron acceptor ability of n-propanol, the excited state of probe transfers from highly emissive HLCT state to non-emissive charge-transfer s...

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Reversible color modulation of luminescent conjugated polymers based on a chemical redox mechanism and applications in rewritable paper and multiple information encryption

Abstract: Reversible color modulation plays a key role in the field of information recording and encryption, but for the common colorful conjugated polymer materials, currently it still lacks a convenient method...

Cited by 12 publications

References 48 publications

Recent advances in electrochromic materials and devices for camouflage applications

Recent advances in electrochromic materials and devices for camouflage applications

Flexible Multicolor Rewritable Paper Coated with Metallosupramolecular Polymers for Electrochromic Printing and Natural Erasing by Humidity

An Ultra‐Sensitive Fluorescent Probe Based on Hybridized Local and Charge‐Transfer Materials for Quantitative Detection of Propanol Isomers

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