How Structure and Hydrostatic Pressure Impact Excited-State Properties of Organic Room-Temperature Phosphorescence Molecules: A Theoretical Perspective DOI
Yan Wang, Huanling Liu, Yuzhi Song

и другие.

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

Опубликована: Янв. 7, 2025

Organic room-temperature phosphorescence (RTP) emitters with long lifetimes, high exciton utilizations, and tunable emission properties show promising applications in organic light-emitting diodes (OLEDs) biomedical fields. Their excited-state are highly related to single molecular structure, aggregation morphology, external stimulus (such as hydrostatic pressure effect). To gain a deeper understanding effectively regulate the key factors of luminescent efficiency lifetime for RTP emitters, we employ thermal vibration correlation function (TVCF) theory coupled quantum mechanics/molecular mechanics (QM/MM) calculations investigate photophysical three reported crystals (Bp-OEt, Xan-OEt, Xan-OMe) elastic/plastic deformation. By analyzing geometric structures stacking modes these crystals, observe that structure variations influence electronic structures, subsequently modifying transition energy consumption processes. Specifically, presence strong π–π interactions hydrogen bonds Xan-OEt crystal inhibits nonradiative decay process, thereby realizing long-lived emission. Additionally, hybridized local charge-transfer (HLCT) feature largest charge transfer excitation contributions (57.74%) stabilizes triplet excitons facilitates radiative ultimately achieving emissions. Furthermore, by applying Bp-OEt crystal, efficiencies lifetimes enhanced blue-shifted. All results demonstrate crucial role well effect regulating properties. Thus, our findings reveal structure-packing-property relationship highlight control packing approaches, which could provide prospective strategies constructing stimuli-responsive practical applications.

Язык: Английский

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

Suzhi Cai

и другие.

Advanced Materials, Год журнала: 2024, Номер 36(18)

Опубликована: Янв. 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.

Язык: Английский

Процитировано

51
Hydrogen‐Bonded Organic Framework Nanoscintillators for X‐Ray‐Induced Photodynamic Therapy in Hepatocellular Carcinoma DOI Open Access

Lihui Gu,

Han Wu, Xu Li

и другие.

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 10, 2025

Abstract X‐ray induced photodynamic therapy (X‐PDT) leverages penetrating to generate singlet oxygen ( 1 O 2 ) for treating deep‐seated tumors. However, conventional X‐PDT typically relies on heavy metal inorganic scintillators and organic photosensitizers produce , which presents challenges related toxicity energy conversion efficiency. In this study, highly biocompatible phosphorescent nanoscintillators based hydrogen‐bonded frameworks (HOF) are designed engineered, termed BPT‐HOF@PEG, enhance in hepatocellular carcinoma (HCC) treatment. BPT‐HOF@PEG functions simultaneously as both scintillator photosensitizer, effectively absorbing transferring abundant . Both vitro vivo investigations demonstrate that internalized efficiently produces significant quantities of upon irradiation. Additionally, exposure directly inflicts DNA damage, the synergistic effects these mechanisms result pronounced cell death substantial tumor growth inhibition, with a inhibition rate up 90.4% assessments. RNA sequencing analyses reveal induces apoptosis Hepa1‐6 cells while inhibiting proliferation, culminating death. Therefore, work highlights considerable potential efficient HOF nanoscintillators‐based promising therapeutic approach HCC, providing effective alternative negligible patients unresectable

Язык: Английский

Процитировано

2
3D printable organic room-temperature phosphorescent materials and printed real-time sensing and display devices DOI Creative Commons
Haodong Sun, Yuxin Xiao,

Yunfei He

и другие.

Chemical Science, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

3D printable RTP resins were constructed by doping the emissive guest molecules into methyl methacrylate. Accordingly, 3D-printable real-time temperature sensing and new-concept displays fabricated through DLP printing.

Язык: Английский

Процитировано

2
Disorder‐Enhanced Charge‐Transfer‐Mediated Room‐Temperature Phosphorescence in Polymer Media DOI Open Access
Aoyuan Cheng, Hao Su,

Xuewen Gu

и другие.

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(45)

Опубликована: Сен. 21, 2023

Room-temperature phosphorescence (RTP) polymers have important applications for biological imaging, oxygen sensing, data encryption, and photodynamic therapy. Despite the many advantages polymeric materials offer such as great control over gas permeability processing flexibility, disorder is traditionally considered an intrinsic negative impact on efficiency embedded RTP luminophores, various allowed thermal motions could quench emitting states. However, we propose that disorder-enabled freedoms of microscopic can be beneficial charge-transfer-mediated RTP, which facilitated by molecular conformational changes among different electronic transition Using "classic" pyrene-aniline exciplex example, demonstrate mutual enhancement red/near-infrared green emissions from pyrene aniline moieties, respectively, upon doping polymer with trace derivatives. In comparison, a pyrene-doped crystal formed same structure exhibits only charge-transfer fluorescence no red or observed, suggesting order suppresses channels. The proposed polymerization strategy may used unified method to generate multi-emissive vast pool known unknown exciplexes complexes.

Язык: Английский

Процитировано

39
π–π Interaction‐Induced Organic Long‐wavelength Room‐Temperature Phosphorescence for In Vivo Atherosclerotic Plaque Imaging DOI
Yufan Zhang, Ji-Sen Li,

Jiliang Zhao

и другие.

Angewandte Chemie International Edition, Год журнала: 2023, Номер 63(2)

Опубликована: Дек. 8, 2023

Abstract Room‐temperature phosphorescent (RTP) materials have great potential for in vivo imaging because they can circumvent the autofluorescence of biological tissues. In this study, a class organic‐doped long‐wavelength (≈600 nm) RTP with benzo[c][1,2,5] thiadiazole as guest was constructed. Both host and molecules simple structures be directly purchased commercially at low cost. Owing to long phosphorescence wavelength doping system, it exhibited good tissue penetration (10 mm). Notably, these nanoparticles were successfully used image atherosclerotic plaques, signal‐to‐background ratio (SBR) 44.52. This study provides new approach constructing inexpensive red organic method cardiovascular diseases using materials.

Язык: Английский

Процитировано

35
Recent Advances in Room‐Temperature Phosphorescence Metal–Organic Hybrids: Structures, Properties, and Applications DOI
Xian Li, Yuefei Wang, Zaiyong Zhang

и другие.

Advanced Materials, Год журнала: 2023, Номер 36(15)

Опубликована: Окт. 26, 2023

Metal-organic hybrid (MOH) materials with room-temperature phosphorescence (RTP) have drawn attention in recent years due to their superior RTP properties of high efficiency and ultralong emission lifetime. Great achievement has been realized developing MOH high-performance RTP, but a systematic study on feature is lacking. This review highlights advances metal-organic materials. The molecular packing, the photophysical properties, applications are discussed detail. can be divided into six parts: coordination polymers, frameworks (MOFs), metal-halide hybrids, organic ionic crystals, organic-inorganic perovskites. These successfully applied time-resolved data encryption, fingerprint recognition, information logic gates, X-ray imaging, photomemory. not only provides basic principles designing also propounds future research prospects hybrids. offers many effective strategies for hybrids excellent thus satisfying practical applications.

Язык: Английский

Процитировано

27
Time-dependent and clustering-induced phosphorescence, mechanochromism, structural-function relationships, and advanced information encryption based on isomeric effects and host–guest doping DOI

Jianmei Guo,

Jiaqi Liu, Yupeng Zhao

и другие.

Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy, Год журнала: 2024, Номер 317, С. 124449 - 124449

Опубликована: Май 11, 2024

Язык: Английский

Процитировано

11
Two new Cd-based metal–organic frameworks for afterglow detection of Fe3+ and NH3 DOI Creative Commons
Wen‐Qi Zhang, Bolun Zhang, Ting Wang

и другие.

Journal of Materials Chemistry A, Год журнала: 2024, Номер 12(13), С. 7732 - 7741

Опубликована: Янв. 1, 2024

The present study showcases two Cd-based MOFs that exhibit potential as afterglow probes for the “turn off” and on” detection of Fe 3+ ions NH 3 , respectively.

Язык: Английский

Процитировано

10
Delayed room temperature phosphorescence enabled by phosphines DOI Creative Commons

Guang Lu,

Jing Tan, Hongxiang Wang

и другие.

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Май 2, 2024

Abstract Organic ultralong room-temperature phosphorescence (RTP) usually emerges instantly and immediately decays after excitation removal. Here we report a new delayed RTP that is postponed by dozens of milliseconds removal in two steps including an initial increase intensity followed subsequent decrease intensity. The achieved through introduction phosphines into carbazole emitters. In contrast to the rapid energy transfer from single-molecular triplet states (T 1 ) stabilized n *) instant systems, phosphine groups insert their intermediate M between carbazole-originated T * carbazole-phosphine hybrids. addition markedly increasing emission lifetimes ten folds, since → transition require >30 milliseconds, thereby milliseconds. character hybrids can be used reveal information combining RTP, realizing multi-level time resolution for advanced information, biological optoelectronic applications.

Язык: Английский

Процитировано

10
Color‐Tunable Room‐Temperature Phosphorescence from Non‐Aromatic‐Polymer‐Involved Charge Transfer DOI Creative Commons
Ningyan Li,

Xipeng Yang,

Binbin Wang

и другие.

Advanced Science, Год журнала: 2024, Номер 11(30)

Опубликована: Июнь 14, 2024

Polymeric room-temperature phosphorescence (RTP) materials especially multicolor RTP systems hold great promise in concrete applications. A key feature these applications is a triplet charge transfer transition. Aromatic electron donors and acceptors are often essential to ensure persistent RTP. There much interest fabricating non-aromatic charge-transfer-mediated it still remains formidable challenge achieve color-tunable via transfer. Herein, material by embedding quinoline derivatives within polymer matrix such as polyacrylamide (PAM) or polyvinyl alcohol (PVA) developed. Through-space (TSCT) achieved upon alkali- heat treatment realize long lifetime of up 629.90 ms, high quantum yield 20.51%, green-to-blue afterglow for more than 20 s at room temperature. This emerges from nonaromatic single phosphor that has rarely been reported before. finding suggests an effective simple approach can deliver new including display, information encryption, gas detection.

Язык: Английский

Процитировано

9