Achieving Stable and Switchable Ultralong Room-Temperature Phosphorescence from Polymer-Based Luminescent Materials with Three-Dimensional Covalent Networks for Light-Manipulated Anticounterfeiting DOI

Shiying Wu,

Huaqing Zhang, Zhu Mao

et al.

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(33), P. 39896 - 39904

Published: Aug. 9, 2023

Developing polymer-based organic afterglow materials with switchable ultralong phosphorescence (UOP) that are insensitive to moisture remains challenging. Herein, two luminogens, BBCC and BBCS, were synthesized by attaching 7H-benzo[c]carbazole (BBC) benzophenone diphenyl sulfone. These emitters employed as guest molecules doped into epoxy polymers (EPs), which constructed in situ polymerization achieve polymer BBCC-EP BBCS-EP. It was found BBCS-EP films exhibited significant photoactivated UOP properties. After light irradiation, they could produce a conspicuous quantum yields lifetimes up 5.35% 1.91 s, respectively. Meanwhile, also presented photochromic characteristics. Upon thermal annealing, the be turned off, recovered their pristine state, showing afterglow. In addition, displayed excellent water resistance still produced obvious after soaking for 4 weeks. Inspired unique properties, BBCS mixtures of diglycidyl ether bisphenol A (DGEBA) 1,3-propanediamine security inks light-controlled multilevel anticounterfeiting. This work may provide helpful guidance developing photostimuli-responsive materials, especially those stable under ambient conditions.

Language: Английский

Ultralow‐loss Optical Waveguides through Balancing Deep‐Blue TADF and Orange Room Temperature Phosphorescence in Hybrid Antimony Halide Microstructures DOI Open Access
Bo Zhou, Zhenhong Qi,

Meiqi Dai

et al.

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(39)

Published: Aug. 14, 2023

Harnessing the potential of thermally activated delayed fluorescence (TADF) and room temperature phosphorescence (RTP) is crucial for developing light-emitting diodes (LEDs), lasers, sensors, many others. However, effective strategies in this domain are still relatively scarce. This study presents a new approach to achieving highly efficient deep-blue TADF (with PLQY 25 %) low-energy orange RTP 90 through fabrication lead-free hybrid halides. class monomeric dimeric 0D antimony halides can be facilely synthesized using bottom-up solution process, requiring only few seconds minutes, which offer exceptional stability nontoxicity. By leveraging adaptable molecular arrangement crystal packing modes, demonstrate ability self-assemble into regular 1D microrod 2D microplate morphologies. self-assembly facilitated by multiple non-covalent interactions between inorganic cores organic shells. Notably, these microstructures exhibit outstanding polarized luminescence function as low-dimensional optical waveguides with remarkably low optical-loss coefficients. Therefore, work not pioneering demonstration halides, but also introduces micro/nanostructures that hold promising applications white LEDs photonic systems.

Language: Английский

Citations

87
Room-temperature phosphorescent materials derived from natural resources DOI
Xiongfei Luo, Bing Tian, Yingxiang Zhai

et al.

Nature Reviews Chemistry, Journal Year: 2023, Volume and Issue: 7(11), P. 800 - 812

Published: Sept. 25, 2023

Language: Английский

Citations

62
Zero-dimensional halide hybrid bulk glass exhibiting reversible photochromic ultralong phosphorescence DOI Creative Commons

Fei Nie,

Dongpeng Yan

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: June 29, 2024

Dynamically responsive materials, capable of reversible changes in color appearance and/or photoemission upon external stimuli, have attracted substantial attention across various fields. This study presents an effective approach wherein switchable modulation photochromism and ultralong phosphorescence can be achieved simultaneously a zero-dimensional organic-inorganic halide hybrid glass doped with 4,4´-bipyridine. The facile fabrication large-scale glasses is accomplished through combined grinding-melting-quenching process. persistent luminescence regulated the photochromic switch induced by photo-generated radicals. Furthermore, incorporation aggregation-induced chirality effect generates intriguing circularly polarized luminescence, optical dissymmetry factor (g

Language: Английский

Citations

62
Enhancing Purely Organic Room Temperature Phosphorescence via Supramolecular Self‐Assembly DOI
Zheng Han, Zaiyong Zhang,

Suzhi Cai

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(18)

Published: Jan. 25, 2024

Abstract Long‐lived and highly efficient room temperature phosphorescence (RTP) materials are in high demand for practical applications lighting display, security signboards, anti‐counterfeiting. Achieving RTP aqueous solutions, near‐infrared (NIR) emission, NIR‐excited crucial bio‐imaging, but these goals pose significant challenges. Supramolecular self‐assembly provides an effective strategy to address the above problems. This review focuses on recent advances enhancement of via supramolecular self‐assembly, covering four key aspects: small molecular cocrystals, macrocyclic hosts guests, multi‐stage self‐assembly. not only highlights progress areas also underscores prominent challenges associated with developing materials. The resulting strategies development high‐performance discussed, aiming satisfy biomedical science.

Language: Английский

Citations

59
Glassy inorganic-organic hybrid materials for photonic applications DOI
Bo Zhou, Dongpeng Yan

Matter, Journal Year: 2024, Volume and Issue: 7(6), P. 1950 - 1976

Published: April 26, 2024

Language: Английский

Citations

52
Visible Light‐Activated Ultralong‐Lived Triplet Excitons of Carbon Dots for White‐Light Manipulated Anti‐Counterfeiting DOI Open Access
Bin Xu, Yuehan Jia,

Huiying Ning

et al.

Small, Journal Year: 2023, Volume and Issue: 20(1)

Published: Aug. 30, 2023

Abstract Room temperature phosphorescence (RTP) has emerged as an interesting but rare phenomenon with multiple potential applications in anti‐counterfeiting, optoelectronic devices, and biosensing. Nevertheless, the pursuit of ultralong lifetimes RTP under visible light excitation presents a significant challenge. Here, new phosphorescent materials that can be excited by record‐long are demonstrated, realized through embedding nitrogen doped carbon dots (N‐CDs) into poly(vinyl alcohol) (PVA) film. The lifetime N‐CDs@PVA film is remarkably extended to 2.1 s 420 nm, representing highest recorded value for light‐excited materials. Theoretical experimental studies reveal robust hydrogen bonding interactions effectively reduce non‐radiative decay rate radiative transition triplet excitons, thus dramatically prolong lifetime. Notably, emission also activated easily accessible low‐power white‐light‐emitting diode. More significantly, practical state‐of‐the‐art anti‐counterfeiting security optical information storage domains further demonstrated. This research offers exciting opportunities utilizing light‐activated ultralong‐lived systems wide range promising applications.

Language: Английский

Citations

45
Finely manipulating room temperature phosphorescence by dynamic lanthanide coordination toward multi-level information security DOI Creative Commons

Longqiang Li,

Jiayin Zhou,

Junyi Han

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: May 8, 2024

Abstract Room temperature phosphorescence materials have garnered significant attention due to their unique optical properties and promising applications. However, it remains a great challenge finely manipulate phosphorescent achieve desirable performance on demand. Here, we show feasible strategy organic by introducing dynamic lanthanide coordination. The phosphors of terpyridine phenylboronic acids possessing excellent coordination ability are covalently embedded into polyvinyl alcohol matrix, leading ultralong room with lifetime up 0.629 s. Notably, such performance, including intensity lifetime, can be well controlled varying the dopant. Relying modulable these lanthanide-manipulated films, multi-level information encryption attacker-misleading spatial-time-resolved applications is successfully demonstrated greatly improved security level. This work opens an avenue for manipulating meet versatile uses in

Language: Английский

Citations

42
Organic–Inorganic Hybrid Glasses of Atomically Precise Nanoclusters DOI Creative Commons
Chunwei Dong, Xin Song, Bashir E. Hasanov

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(11), P. 7373 - 7385

Published: March 4, 2024

Organic–inorganic atomically precise nanoclusters provide indispensable building blocks for establishing structure–property links in hybrid condensed matter. However, robust glasses of ligand-protected nanocluster solids have yet to be demonstrated. Herein, we show [Cu4I4(PR3)4] cubane coordinated by phosphine ligands (PR3) form melt-quenched air with reversible crystal–liquid–glass transitions. Protective critically influence the glass formation mechanism, modulating glasses' physical properties. A utilizing ethyldiphenylphosphine-based nanoclusters, [Cu4I4(PPh2Et)4], exhibits superb optical properties, including >90% transmission both visible and near-infrared wavelengths, negligible self-absorption, near-unity quantum yield, high light yield. Experimental theoretical analyses demonstrate structural integrity [Cu4I4(PPh2Et)4] nanocluster, i.e., iodine-bridged tetranuclear cubane, has been fully preserved state. The strong internanocluster CH−π interactions found subsequently reduced vibration account its enhanced luminescence Moreover, this highly transparent enables performant X-ray imaging low-loss waveguiding fibers drawn above transition. discovery "nanocluster glass" opens avenues unraveling mechanisms designing novel luminescent well-defined advanced photonics.

Language: Английский

Citations

34
Stable and ultralong room-temperature phosphorescent copolymers with excellent adhesion, resistance, and toughness DOI Creative Commons
Yiling Miao, Faxu Lin,

Danman Guo

et al.

Science Advances, Journal Year: 2024, Volume and Issue: 10(10)

Published: March 8, 2024

Developing stable room-temperature phosphorescence (RTP) emission without being affected by moisture and mechanical force remains a great challenge for purely organic systems, due to their triplet states sensitive the infinitesimal motion of phosphors oxygen quencher. We report kind highly robust phosphorescent doping rigid phosphor into copolymer (polyvinyl butyral resin) matrix with balance mutually exclusive features, including rigidly hydrophilic hydrogen bond network elastically hydrophobic constituent. Impressively, these RTP polymeric films have superior adhesive ability on various surfaces showed reversible photoactivated lifetimes up 5.82 seconds, which can be used as in situ modulated anticounterfeit labels. They maintain bright afterglow over 25.0 seconds under practical conditions, such storage refrigerators, soaking natural water month, or even subjected strong collisions impacts. These findings provide deep insights developing ultralong materials desirable comprehensive performance.

Language: Английский

Citations

34
Enabling robust blue circularly polarized organic afterglow through self-confining isolated chiral chromophore DOI Creative Commons
Mingjian Zeng, Wei‐Guang Wang, Shuman Zhang

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: April 9, 2024

Abstract Creating circularly polarized organic afterglow system with elevated triplet energy levels, suppressed non-radiative transitions, and effective chirality, which are three critical prerequisites for achieving blue afterglow, has posed a formidable challenge. Herein, straightforward approach is unveiled to attain materials by covalently self-confining isolated chiral chromophore within polymer matrix. The formation of robust hydrogen bonds the matrix confers distinctly stabilized molecular state chromophores, endowing emission band at 414 nm, lifetime 3.0 s, luminescent dissymmetry factor ~ 10 −2 . Utilizing synergistic chirality transfer, full-color systems endowed doping colorful fluorescent molecules into designed polymers, empowering versatile applications. This work paves way streamlined design materials, expanding horizons various domains.

Language: Английский

Citations

31