Organic photoresponsive materials for information storage: a review

Zhuang, Yanling; Ren, Xiuli; Che, Xueting; Liu, Shujuan; Huang, Wei; Zhao, Qiang

doi:10.1117/1.ap.3.1.014001

Cited by 70 publications

(44 citation statements)

References 124 publications

(215 reference statements)

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“…[8][9][10][11][12] Photochromic compounds as an important class of stimuli-responsive materials, have attracted an explosion of interest in recent years. [13][14][15][16] These compounds are able to display distinct colors in response to external photochemical or additional thermal stimuli via reversible isomerization, cyclization, or cycloaddition reactions, during which, molecular structures with different geometry, conjugations and optical features are achieved. [17,18] The most studied photochromic compounds are diazobenzenes, diarylethenes, spiropyrans, etc., whose switchable colors, polarities, and emission properties cause their vast applications in the fields of molecular switches, logic gates, as well as anticounterfeiting and encryption.…”

Section: Introductionmentioning

confidence: 99%

Time‐Resolved Encryption via a Kinetics‐Tunable Supramolecular Photochromic System

et al. 2022

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With the advancement of forgery and decryption methods, conventional static encryption technology is becoming more and more powerless, which strongly demands the development of multistate anticounterfeiting materials as well as advanced multidimensional encryption strategies and technologies. Here a new strategy to realize time‐resolved encryption based on a self‐assembled supramolecular ternary complex is presented, which exhibits tunable dynamic photochromic features caused by the reversible photodimerization/cleavage reactions of the guest chromophores inside the cavity of cucurbit[8]uril (CB[8]). This supramolecular system shows excellent photochromic properties, including extremely rapid response time, high conversion rate, and product‐stereoselectivity, etc. More importantly, the kinetics of the photoreaction can be modulated by simply varying the host–guest ratios in aqueous or quasi‐solid phase, providing the material with finely tunable time‐dependent features, which cannot only be employed in data processing with more extended information, but also construct confidential materials by time‐resolved multidimensional encryption and dynamic anticounterfeiting. The strategic design of kinetics‐tunable supramolecular photochromic materials may provide valuable guidance for the development of more advanced materials for information security.

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Section: Introductionmentioning

confidence: 99%

Time‐Resolved Encryption via a Kinetics‐Tunable Supramolecular Photochromic System

et al. 2022

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“…Besides, slight molecular motions in OPL materials or the altered molecular structures may be induced by UV irradiation, leading to momentous changes in the OPL emission intensity or lifetimes, which can be used for detecting UV light. 109 Li and Pu et al found that weak phosphorescence emission was observed from the crystal of 81, but it showed OPL emission with a lifetime of 0.3 s upon UV irradiation for 5 minutes ( Fig. 10a ).…”

Section: Various Environmental Sensing Applicationsmentioning

confidence: 95%

Halide-containing organic persistent luminescent materials for environmental sensing applications

Meng-Zhu

Liu

et al. 2022

Chem. Sci.

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“…Under different external stimuli, such as light, − mechanical force, − vapor, − electric field, − or temperature, − materials that can exhibit a reversible change in their optical properties have huge application potentials within various optoelectronic fields. Among these types of optical materials, excitation-wavelength-dependent (Ex-De) luminophores have attracted particular interest. − This is due to the facile, fast, and noninvasive manipulation of their luminescence color by varying the excitation energy; such systems demonstrate great promise in bioimaging and anticounterfeiting applications .…”

Section: Introductionmentioning

confidence: 99%

Reversible On–Off Switching of Excitation-Wavelength-Dependent Emission of a Phosphorescent Soft Salt Based on Platinum(II) Complexes

Chen

Wei

et al. 2021

J. Am. Chem. Soc.

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Excitation-wavelength-dependent (Ex-De) emission materials show excellent potential in diverse advanced photonic areas. Of significant importance is the on-demand regulation of the Ex-De luminescence behavior of these materials, which is previously unprecedented. In this study, we report on a platinum(II) complex-based phosphorescent soft salt S1 ([Pt(tpp)(ed)] + -[Pt(ftpp)(CN) 2 ] − (where ttp = 2-(4-(trifluoromethyl)phenyl)pyridine, ed = ethane-1,2-diamine, and ftpp = 2-(4-fluoro-3-(trifluoromethyl)phenyl)pyridine)) with Ex-De photoluminescence (PL) property. UV−visible absorption and PL spectra of S1 were recorded in DMSO−H 2 O mixture (1 × 10 −3 M) with various H 2 O fractions to investigate its ground and excited states. Interestingly, the PL spectra of S1 powder show that its maximum emission peak is red-shifted from 595 to 644 nm upon excitation at different wavelengths from 360 to 520 nm, accompanied by an obvious emission color change from yellow-orange to red. Furthermore, confocal laser scanning fluorescence microscopy was employed to determine the PL property of self-assembled uniform S1 nanostructure, and the result shows that the Ex-De emission behavior is absent. On the basis of these results, we conclude the various Pt(II)•••Pt(II) distances that exist are the major factor responsible for the properties of the Ex-De PL of S1 powder. Thus, for the first time, reversible on−off switching of Ex-De PL of S1 was achieved by manipulating its Pt(II)•••Pt(II) distances through mechanical stress and vapor fuming. Finally, we demonstrate the high-level anticounterfeiting applications via on-demand multicolor displays.

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Organic photoresponsive materials for information storage: a review

Cited by 70 publications

References 124 publications

Time‐Resolved Encryption via a Kinetics‐Tunable Supramolecular Photochromic System

Time‐Resolved Encryption via a Kinetics‐Tunable Supramolecular Photochromic System

Halide-containing organic persistent luminescent materials for environmental sensing applications

Reversible On–Off Switching of Excitation-Wavelength-Dependent Emission of a Phosphorescent Soft Salt Based on Platinum(II) Complexes

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