Intrinsic Narrowband Blue Phosphorescent Materials and Their Applications in 3D Printed Self‐monitoring Microfluidic Chips

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 18, 2024

Organic room-temperature phosphorescent (RTP) materials, especially with narrowband emission properties, exhibit great potential for applications in display and sensing, but have been seldom reported. Herein, a rare example of the intrinsic blue RTP material is fabricated A series indolo[3,2,1-kl]phenothiazine derivatives, named Cphpz, 1O-Cphpz, 2O-Cphpz, are designed synthesized. Due to their relatively rigid structures, these three compounds showed deep emissions ranging from 396 434 nm full width at half maximum (FWHM) 31, 26, 31 nm, respectively. To delight, compound 2O-Cphpz displayed 448 FWHM 36 long-lived lifetime 1.08 s hydroxyethyl acrylate acrylic acid matrix. Photophysical studies, single crystal analyses, TD-DFT calculations performed elucidate further relationships between molecular structures properties. Meanwhile, because highly sensitive humidity, visualizing droplet path optical microfluidic chip efficiently through digital light processing 3D printing.This work provides reliable strategy realize expand self-monitoring printed structures.

Язык: Английский

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Stacked Scintillators Based Multispectral X‐Ray Imaging Featuring Quantum‐Cutting Perovskite Scintillators With 570 nm Absorption‐Emission Shift

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 28, 2025

Abstract Traditional energy‐integration X‐ray imaging systems rely on total intensity for image contrast, ignoring energy‐specific information. Recently developed multilayer stacked scintillators have enabled multispectral, large‐area flat‐panel (FPXI), enhancing material discrimination capabilities. However, increased layering can lead to mutual excitation, which may affect the accurate of energy. This issue is tackled by proposing a novel design strategy utilizing rare earth ions doped quantum‐cutting as top layer. These create new luminescence centers via energy transfer, resulting in significantly larger absorption‐emission shift, well potential double photoluminescence quantum yield (PLQY) and enhance light output. To verify this concept, three‐layer scintillator detector using ytterbium (Yb 3+ )‐doped CsPbCl 3 perovskite nanocrystals (PeNCs) layer, offers high PLQY over 100% significant shift 570 nm. configuration, CsAgCl 2 Cs Cu I 5 middle bottom layers, respectively, ensures non‐overlapping optical absorption radioluminescence (RL) emission spectra. By calculating optimal thickness each layer absorb specific energies, demonstrates distinct differences across various bands, identification materials with similar densities.

Язык: Английский

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Top-down approach for easy processing, cost-effective, biodegradable chiral photonic materials with spontaneous circularly polarized room-temperature phosphorescence activity

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 160357 - 160357

Опубликована: Фев. 1, 2025

Язык: Английский

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Room-Temperature Phosphorescence from Bamboo Fibers and Designed Materials

ACS Materials Letters, Год журнала: 2025, Номер unknown, С. 1119 - 1126

Опубликована: Фев. 20, 2025

Язык: Английский

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Thermal‐Adaptive Photonic MOFs for High‐Performance X‐ray Scintillator

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 3, 2025

Abstract Dynamic responsive scintillating materials play a significant role in advanced radiation detection technology. However, the issues such as thermal quenching, uncontrollable structure, and unsatisfactory cost, still remain obstacles to diversified development of recent scintillators. Herein, strategy is proposed by assembling well‐designed inorganic organic building units with low cost construct series novel lanthanide MOFs for thermal‐adaptive X‐ray scintillators (TAXS). Based on delicate energy level design, as‐obtained TAXS present ultra‐high relative light yield (max ≈49 700 photons MeV −1 ), tunable luminescence (from green red band), dose rate limit (min ≈118.7 nGy air s ). Importantly, these exhibit unique behaviors including thermal‐facilitated metal‐ligand distance contraction X‐ray‐induced carrier generation, resulting obvious enhanced radio‐luminescence. They maintain perfect linear response (R 2 > 99.8%) excellent stability (>95% after 215 Gy irradiation) during heat treatment. Both TAXS‐based membranes high imaging resolution ≈24 lp mm ) inks customizable printing demonstrate potential work normally at elevated temperatures. Such supports photonic functional fabricate high‐performance harsh condition services.

Язык: Английский

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Lone Pairs-Mediated Multiple Through-Space Interactions for Efficient Room-Temperature Phosphorescence

Journal of the American Chemical Society, Год журнала: 2025, Номер unknown

Опубликована: Март 18, 2025

The simultaneous generation and stabilization of triplet excitons are the key to realizing efficient organic room temperature phosphorescence (RTP), which is challenging owing obscure mechanism structure-property relationships. Herein, a strategy lone-pair-mediated multiple through-space interactions (TSIs) proposed availably induce RTP. By incorporating heteroatoms facilitate n-n n-π interactions, lone pairs delocalized throughout structure, resulting in dense splitting excited-state energy levels. Thus, more matched levels with small gap between singlet states (ΔEST) emerge, intersystem crossing (ISC) transition channels that assist generation. strong TSIs also effectively rigidify molecular structures thus stabilize for radiation. Furthermore, manipulation TSI intensity allows efficiency enhancement, persistent time prolongation, tolerance high temperatures This work not only explores fundamental principle RTP from new view but provides universal ISC promotion triple stabilization.

Язык: Английский

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Versatile room temperature phosphorescence polymer with luminophore content as low as 0.05 wt%

Chemical Engineering Journal, Год журнала: 2024, Номер 495, С. 153443 - 153443

Опубликована: Июнь 28, 2024

Язык: Английский

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Polymorphism Steered Thermochromism in a Sulfonamide

ACS Applied Optical Materials, Год журнала: 2024, Номер 2(8), С. 1709 - 1720

Опубликована: Авг. 12, 2024

Color polymorphism is a rare but intriguing phenomenon, crucial for fundamental understanding and with broad implications number of industries. We report the facile preparation six color polymorphs (forms I–VI) sulfonamide. All forms have been structurally characterized, studies attribute to molecular rotations about C═N–C–C dihedral (torsion 1). A definite correlation between wavelength value torsion 1 has established, indicating tendency red-shift decrease in values 1. Remarkable reversible (four forms) irreversible (two thermochromism arises due controlled small large angle rotations, respectively. Conformational energy scans suggest that are located one two basins. Computational crystal structure prediction (CSP) was performed, taking into account flexibility correctly locate all on form landscape. The temperature-induced enantiotropic phase transition III IV rationalized using free calculations within harmonic approximation. Overall, this work reports record simple compound striking chromism thermochromic behavior emphasizes importance joint experimental computational approach controlling conformationally flexible organic molecules.

Язык: Английский

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Air-stable and ultralong room-temperature phosphorescence from doped poly(methyl methacrylate) for visual detection of volatile organic compounds

Chemical Engineering Journal, Год журнала: 2024, Номер unknown, С. 155737 - 155737

Опубликована: Сен. 1, 2024

Язык: Английский

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Light/X-ray/ultrasound activated delayed photon emission of organic molecular probes for optical imaging: mechanisms, design strategies, and biomedical applications

Chemical Society Reviews, Год журнала: 2024, Номер 53(22), С. 10970 - 11003

Опубликована: Янв. 1, 2024

Versatile energy inputs, including light, X-ray and ultrasound, activate organic molecular probes to undergo different delay mechanisms, charge separation, triplet exciton stabilization chemical trap, for delayed photon emission.

Язык: Английский

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