Multi-color solid-state photoluminescence from orthogonally multi-stimuli-responsive organic molecule for advanced information storage and encryption

Zhang, Qi; Li, Yang; Gao, Youhe; Xiang, Yang; Li, Hongjuan; Sun, Shiguo; Xu, Yongqian

doi:10.1016/j.cej.2023.141666

Cited by 8 publications

(1 citation statement)

References 76 publications

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“…Organic fluorescent molecules have played important roles in the development of functional devices including organic light emitting diodes (OLEDs), sensors, information storage and bioimaging. 1–3 The molecular structure and supramolecular interaction controlled molecular assembly exerted strong influence on the fluorescence properties in the solid-state. 4–6 For instance, polyaromatic π-conjugated molecules showed strong fluorescence in the solution-state but became non-emissive or weakly emissive in the solid-state due to the aggregation caused quenching (ACQ) effect.…”

Section: Introductionmentioning

confidence: 99%

Halogen atom substitution effect on the carbazole fluorescence properties and supramolecular interactions in the solid-state

Ravi,

Karthikeyan,

Pannipara

et al. 2024

CrystEngComm

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Section: Introductionmentioning

confidence: 99%

Halogen atom substitution effect on the carbazole fluorescence properties and supramolecular interactions in the solid-state

Ravi,

Karthikeyan,

Pannipara

et al. 2024

CrystEngComm

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Multidimension‐Regulated Dynamic Timing Control Over Multicolor Emission of Host–Guest Assemblies for Information Encryption and Advanced Anti‐Counterfeiting

Zhang,

Chang,

Han

et al. 2024

Advanced Optical Materials

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Dynamical control over molecular luminescence, especially in a time‐dependent manner, holds great promise for the development of smart luminescent materials for anti‐counterfeiting and preventing information leakage. Herein, a series of self‐assembled systems are reported using pillar[5]arene (DMP[5]) and spiropyran derivatives (SP‐C4‐Py). The assemblies rely on the time‐encoded locking and unlocking ring‐switching and fluorescence resonance energy transfer (FRET) units for information camouflage and multilevel encryption. DMP[5] with cyan solid fluorescence color acts as the host and energy transfer (EnT) donor, while photochromic SP‐C4‐Py with the ring‐opened and closed isomers acts as guest and EnT acceptor. When irradiated, the assemblies undergo a time‐dependent luminescence color change ranging from cyan to yellow to red through a FRET process. The molar ratio of host and guest in the assembly systems affects the FRET efficiency, and the power of the irradiation source influences the isomerization degree and rate of SP‐C4‐Py, allowing for precise control over the fluorescent color transition time. The combination of molecular composition and external stimuli governs the kinetics of color change, resulting in a difference in the appearance time of a specific fluorescent color pre‐designed as correct authorized information. By combining these diverse assembles in one label, information encryption and dynamic information identification are achieved in the dimensions of time, ratio, and light power. This time‐dependent feature offers the assembly materials with a multilevel security and provides new possibilities for anti‐counterfeiting and blocking information leakage.

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Advancement in Heterogeneous Catalysts for the Synthesis of Benzothiazole Derivatives

Kohli,

Rawat,

Rathee

et al. 2024

ChemistrySelect

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Benzothiazole derivatives, a class of heterocyclic compounds, hold significant relevance in medicinal chemistry, materials science, and agrochemicals due to their diverse biological activities and applications. The conventional synthetic routes often involve harsh conditions and generate significant waste, prompting the exploration of more sustainable approaches. This work offers a comprehensive analysis of the developments in the use of heterogeneous catalysts for the production of benzothiazole derivatives, covering research from 2013 onward. Compared to traditional techniques, heterogeneous catalysts provide improved sustainability, efficiency, and recyclability. The review covers many heterogeneous catalysts and discusses their selectivity, recyclability, and catalytic activity. The utilization of heterogeneous catalysts is noteworthy as it facilitates the synthesis process's overall sustainability by allowing for milder reaction conditions, less environmental effect, and easier catalyst separation and recovery. The potential of heterogeneous catalysis in promoting the production of benzothiazole derivatives and satisfying the increasing need for these substances in various industrial applications is also highlighted.

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Multi-color solid-state photoluminescence from orthogonally multi-stimuli-responsive organic molecule for advanced information storage and encryption

Cited by 8 publications

References 76 publications

Halogen atom substitution effect on the carbazole fluorescence properties and supramolecular interactions in the solid-state

Halogen atom substitution effect on the carbazole fluorescence properties and supramolecular interactions in the solid-state

Multidimension‐Regulated Dynamic Timing Control Over Multicolor Emission of Host–Guest Assemblies for Information Encryption and Advanced Anti‐Counterfeiting

Advancement in Heterogeneous Catalysts for the Synthesis of Benzothiazole Derivatives

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