A novel “AIE+ESIPT” mechanism-based fluorescent probe for visual alternating recognition of HSO3−/H2O2 and its HSO3− detection in food samples

Dyes and Pigments, Год журнала: 2023, Номер 222, С. 111901 - 111901

Опубликована: Дек. 22, 2023

Язык: Английский

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Flexible Organic Chiral Crystals with Thermal and Excitation Modulation of the Emission for Information Transmission, Writing, and Storage

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(15)

Опубликована: Фев. 10, 2024

Organic single crystals quickly emerge as dense yet light and nearly defect-free media for emissive elements. Integration of functionalities control over the properties is currently being explored a wide range these materials to benchmark their performance against organic diluted in powders or films. Here, we report mechanically flexible chiral capable an unprecedented combination fast, reversible, low-fatigue responses. UV-excited both enantiomers material, 4-chloro-2-(((1-phenylidene)imino)methyl)phenol, exhibit drastic reversible change emission color from green orange-yellow within second can be cycled at least 2000 times. The photoresponse was found depend strongly on excitation intensity temperature. Combining chirality, mechanical compliance, rapid switching, multiple responses, writability by UV light, this material provides unique versatile platform developing crystal-based on-demand signal transfer, information storage, cryptography.

Язык: Английский

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Observation of a New TICT State during the Photophysical Process of an Al³⁺ Sensor

The Journal of Physical Chemistry A, Год журнала: 2025, Номер unknown

Опубликована: Фев. 26, 2025

Schiff base with a C═N bond is widely used in the fabrication of turn-on sensors for cations. The isomerization generally believed to induce dark state and quenches sensor's fluorescence. With aid time-dependent density functional theory (TDDFT), this contribution performs comprehensive investigation on photophysical process sensor Al3+. leads non-emissive twisted intramolecular charge transfer (TICT) state, which initiated by an early stage excited proton (ESIPT) process. However, has very large energy barrier low reaction rate that cannot effectively quench Interestingly, brand new TICT observed not induced but rotation neighboring C–C bond. Due barrier, can be attained easily opens up effective channel decays. This observation implies potential surface based should much more complicated than expected. Based process, sensing mechanism Al3+ as well its selectivity face interfering cations are uncovered.

Язык: Английский

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Functional-group-regulated stimuli-responsive banana-shaped α-cyanostilbene derivatives: Dual-state emission, AIEE, acidochromism and their applications in anti-counterfeiting, fingerprint recognition and OLEDs

Journal of Luminescence, Год журнала: 2024, Номер 269, С. 120452 - 120452

Опубликована: Янв. 7, 2024

Язык: Английский

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Mechanochromic luminescent material with high quantum yield for multi-mode anti-counterfeiting applications

Chemical Engineering Journal, Год журнала: 2024, Номер 497, С. 154721 - 154721

Опубликована: Авг. 10, 2024

Язык: Английский

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A simple AIE-active salicylideneaniline towards bimodal encryption-decryption with unique ESIPT-inhibited amorphous state

Chemical Engineering Journal, Год журнала: 2023, Номер 466, С. 143353 - 143353

Опубликована: Май 6, 2023

Язык: Английский

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Control over rotary motion and multicolour switching in 3-hydroxyphthalimide fluorophores: An interplay between AIE and ESIPT

Dyes and Pigments, Год журнала: 2023, Номер 215, С. 111279 - 111279

Опубликована: Апрель 1, 2023

Язык: Английский

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Precise Electron-Withdrawing Strength Modulation of ESIPT Probes for Ultrasensitive and Specific Fluorescence Sensing

Analytical Chemistry, Год журнала: 2023, Номер 95(23), С. 9014 - 9024

Опубликована: Июнь 1, 2023

The precise regulation of the electron-withdrawing/electron-donating strength in a probe is great significance for design reaction-based fluorescent probes with specific functionalities. Here, family excited-state intramolecular proton transfer (ESIPT)-based fluorescence turn-on sensing properties toward KMnO4 was designed by precisely modulating electron-withdrawing substituents located at para-position recognition group. It found that −F, −CHO, and −H as groups bound can specifically recognize KMnO4, which ensures blue emission displayed reaction products. Especially −CHO group, product shows most stable fluorescence. 2-(benzo[d]oxazol-2-yl)-4-formylphenyl acrylate (BOPA-CHO) demonstrated more superior performance including low limit detection (LOD, 0.96 nM), rapid response (<3 s), rather good selectivity even presence 21 interferents. Moreover, practicality further verified test pen comprising BOPA-CHO-embedded sponge, capable detecting solid naked-eye LOD 11.62 ng. present modulation strategy would open up new path high-performance probes.

Язык: Английский

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Self-healing photoluminescent polymers with photosensitive behavior for information storage and multiple-level dynamic encryption

Chemical Science, Год журнала: 2024, Номер 15(33), С. 13306 - 13312

Опубликована: Янв. 1, 2024

A family of light-responsive photoluminescent materials with self-healing properties were obtained and applied in dynamic multi-level information encryption applications.

Язык: Английский

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Janus‐Type ESIPT Chromophores with Distinctive Intramolecular Hydrogen‐bonding Selectivity

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(40)

Опубликована: Авг. 21, 2023

Abstract Excited‐state intramolecular proton transfer (ESIPT)‐based solid luminescent materials with multiple hydrogen bond acceptors (HBAs) remain unexplored. Herein, we introduced a family of Janus‐type ESIPT chromophores featuring distinctive (H‐bond) selectivity between competitive HBAs in single molecule. Our investigations showed that the central hydroxyl group preferentially forms H‐bonds imines imine‐modified 2‐hydroxyphenyl benzothiazole (HBT) but tethers moiety hydrazone‐modified HBT chromophores. Imine‐derived HBTs generally exhibit higher fluorescence efficiency, while hydrazone‐derived show reduced overlap absorption and bands. Quantum chemical calculations unveiled molecular origins biased their impact on process. This chromophore skeleton provides new opportunities for design materials.

Язык: Английский

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