Organic high-temperature afterglow materials: an advancing and impactful research area

Science China Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 2, 2025

Язык: Английский

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Achieving Efficient Blue Room‐Temperature Phosphorescence Through Self‐Doping of Similar Structures and Polymer Assistance

Advanced Optical Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 28, 2025

Abstract Blue is one of the three primary colors, and it a crucial element in regulation application organic room‐temperature phosphorescence (ORTP). However, considerable Stokes shift small molecules presents challenge for creating blue afterglow materials. To address this, host‐guest‐doped materials are prepared by selecting compounds with similar structures self‐doping. This method effectively regulated long‐lasting phosphorescence. Additionally, persistent‐RTP long‐persistent luminescence (LPL) properties can be further enhanced incorporating rigid or flexible polymer network, dense environment between host guest. Remarkably, lifetime duration polymer‐assisted doped ≈5 times greater than those host‐guest crystal Apart from its high efficiency, environmental friendliness, easy synthesis, this ORTP material boasts thermal stability flexibility. Furthermore, demonstrates potential applications such as information encryption anti‐counterfeiting across various media, including paper, cotton thread, leaves.

Язык: Английский

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Ultralong Blue Organic Room‐Temperature Phosphorescence Promoted by Green Assembly

Advanced Functional Materials, Год журнала: 2024, Номер 34(46)

Опубликована: Июль 9, 2024

Abstract In recent years, there is a growing interest in developing ultralong organic room‐temperature phosphorescence (ORTP) with lifetimes the range of seconds. As one important three primary colors, blue ORTP an indispensable core component RTP regulation and application, however, large Stokes shift characteristics pose certain challenges ORTP. Here, new family phosphors are synthesized realized through crystal assembly water phase. Remarkably, compared to materials obtained phases, enabled long‐lived up 2.3 s quantum yield reached as high 29.27%. addition efficient green form, such dark possessed thermal stability flexible tunability. Moreover, superiority selected components demonstrated by comparing them polymer proposed show great potential programmable information encryption/anti‐counterfeiting.

Язык: Английский

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Organic room temperature phosphorescence co‐crystal with reversible acid/base stimulus response

Smart Molecules, Год журнала: 2025, Номер unknown

Опубликована: Янв. 4, 2025

Abstract Stimulus‐responsive organic room temperature phosphorescent (RTP) materials have received significant attention in bioimaging, sensing, and data storage because of their controllable dynamic variability rapid response. Organic co‐crystals, with tailor‐designed optical properties through manipulation aggregate structures, proven to be very effective elucidating the structure‐property relationship RTP at molecular level. Therefore, enhancing rigid frameworks that promote intersystem crossing is a valid approach. Notably, realization co‐crystal performance by altering components or adjusting crystal lattices highly appealing; however, this has not been fully addressed. In study, an co‐crystal, 4,4′‐bipyridine (44BD), was employed as host, 1,4‐diiodotetrafluorobenzene (DITF) 4‐bromo‐2,3,5,6‐tetrafluorobenzoic acid (TFBA) were guests. The 44BD‐DITF exhibited orange RTP, whereas 44BD‐TFBA displayed bright yellow RTP. Crystal analysis theoretical calculations revealed dense packing abundant intermolecular interactions within these co‐crystals are crucial for emergence both show reversible acid/base stimulus response, is, exposure hydrochloric (HCl) fumes results quenching which can subsequently restored triethylamine (TEA) fumigation. This study presents approach towards switching thus offering opportunities development stimulus‐responsive next‐generation applications.

Язык: Английский

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Integrating three-primary-color and white long-lasting afterglows in triphenylene-doped polymers for time/space-resolved applications

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 160535 - 160535

Опубликована: Фев. 1, 2025

Язык: Английский

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Temperature-Adaptive Organic Scintillators for X-ray Radiography

Journal of the American Chemical Society, Год журнала: 2024, Номер unknown

Опубликована: Дек. 16, 2024

Organic phosphorescence or thermally activated delayed fluorescence (TADF) scintillators, while effective in utilizing triplet excitons, are sensitive to temperature changes, which can impact radioluminescence performance. In this study, we have developed a type of temperature-adaptive organic scintillator with and TADF dual emission. These scintillators automatically switch modes enabling efficient from 77 400 K. The highest photoluminescence quantum yield light 83.2% 78,229 ± 562 photons MeV

Язык: Английский

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Photoinduced electron-transfer strategy for switchable fluorescence and phosphorescence in lanthanide-based coordination polymers

Chemical Science, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

Smart optical materials with tunable fluorescence and room temperature phosphorescence (RTP) exhibit promising application prospects in the field of intelligent switches, information security,

Язык: Английский

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Organic Charge Transfer Complex Towards Functional Optical Materials

CrystEngComm, Год журнала: 2024, Номер 26(35), С. 4751 - 4765

Опубликована: Янв. 1, 2024

The article highlights the recent developments on some interesting optical traits of organic charge transfer complexes. Properties like room temperature phosphorescence, thermally activated delayed fluorescence, circularly polarised luminescence, etc. , are summarized.

Язык: Английский

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Conformation‐Controlled Double Phosphorescence Components From A Single Organic Molecule: Time‐Dependent and Excitation‐Dependent Wide‐Range Afterglow Color Change

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 23, 2024

Abstract Double phosphorescence components from a single organic molecule is rarely reported before because most molecules must follow Kasha's rule and merely emit T 1 state. We discover unique phenomenon of conformation‐controlled expression double components. The green component the red are assigned to dinaphthylamine moiety pyrene unit N,N‐di(naphthalen‐2‐yl)pyren‐1‐amine (NaPy), respectively. NaPy shows time‐dependent excitation‐dependent afterglow color change in copolymerized MMA film at room temperature due simultaneous However, PMMA MA film, just expresses component, suggesting that matrix rigidity greatly affects via altering conformation NaPy. In low‐rigidity matrix, dyanmic free rotation triplet excitons relax T1 state inner conversion or vibration relaxation, leading sole component. high‐rigidity highly twisted stabilized limitation 2 return S0 separately, resulting Thus, follows but disobeys matrix. can function relatively independently, wide‐range change.

Язык: Английский

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Coordinated Solvent Molecules Enable the Excellent Capabilities of Two Zn²⁺‐Based Complexes in Detecting l‐Arginine via Long‐Lived Luminescence Recovery

Advanced Functional Materials, Год журнала: 2024, Номер 34(40)

Опубликована: Май 20, 2024

Abstract Luminescence metal–organic materials (MOMs) are widely used as probes for detection. However, most of such based on fluorescence and work in either turn‐off or turn‐on mode. In contrast, long‐lived (>10 ms) (LLPs) with recovery response to analyte quite rare. Herein “solvation complex” strategy is prepare two new afterglow complexes multiple coordinated solvents, trans ‐complex 1 both delayed (DF) room temperature phosphorescence (RTP), cis 2 RTP. Remarkably, they can serve selective LLPs l ‐Arginine detection, limit detection down 1.0 × 10 −7 M. addition, heating/fumigation induce reversible arousal/silence their afterglow, while H O/DMSO vapor fumigation causes crystalline‐to‐crystalline transformation between them. Detailed mechanism studies reveal that the change solvent, including loss/acquisition, exchange, replacement, plays a key role multi‐stimuli‐responsive properties. This not only shows potential luminescence complex but also reveals unique advantages solvation preparation

Язык: Английский

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