Enhanced Photoactivated Circularly Polarized Afterglow with High Dissymmetry Factor and Tunable Emission DOI Open Access
Yuxia Zhang, Yu-Chang Wang,

Junjie Wu

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 5, 2025

Abstract Photoactivated circularly polarized afterglow (CPA) exhibits broad application prospects in various optoelectronic areas due to its multidimensional emission characteristics, including wavelengths, lifetimes, and chirality. Achieving photoactivated CPA with extremely high dissymmetry factor ( g lum ) values is highly desired but considerably challenging. This work reports a bilayer assembly (R/S‐CLC‐TPB) integrating TPB@PMMA thin film the selective reflection of cholesteric liquid crystals. Initially, R/S‐CLC‐TPB no emission, while following 1 min UV irradiation, it achieves an noticeable long lifetime 125 ms value up 1.6. enhancement can be attributed oxygen consumption properties under subsequently minimizing loss triplet exciton. Furthermore, by employing triplet‐singlet Förster resonance energy transfer (TS‐FRET) strategy from organic persistent room‐temperature phosphorescence donor fluorescent dye acceptor, color successfully modulated green orange. Ultimately, these materials demonstrate promising capabilities for advanced multi‐level information encryption utilizing their tunable color, create multiple layers that selectively accessed decoded based on photoactivation chiroptical properties.

Language: Английский

Afterglow bio-applications by utilizing triplet excited states of organic materials DOI

Yuanyuan Fan,

Qianqian Li, Zhen Li

et al.

Science China Chemistry, Journal Year: 2023, Volume and Issue: 66(11), P. 2930 - 2940

Published: Oct. 23, 2023

Language: Английский

Citations

50
Fused‐Ring Pyrrole‐Based Near‐Infrared Emissive Organic RTP Material for Persistent Afterglow Bioimaging DOI

Yeyun Zhao,

Jianhui Yang, Chao Liang

et al.

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 63(5)

Published: Dec. 12, 2023

Organic near-infrared room temperature phosphorescence (RTP) materials offer remarkable advantages in bioimaging due to their characteristic time scales and background noise elimination. However, developing RTP for deep tissue imaging still faces challenges since the small band gap may increase non-radiative decay, resulting weak emission short lifetime. In this study, fused-ring pyrrole-based structures were employed as guest molecules construction of long wavelength emissive materials. Compared decrease singlet energy level, triplet level showed a more effectively with conjugation substituent groups. Moreover, sufficient fused ring molecule suppresses decay excitons. Therefore, material (764 nm) was achieved penetration bioimaging. Tumor cell membrane is used coat nanoparticles (NPs) avoid decreasing performance compared traditional coating by amphiphilic surfactants. NPs tumor-targeting properties show favorable phosphorescent properties, superior stability, excellent biocompatibility. These are applied time-resolved luminescence eliminate interference penetration. This study provides practical solution prepare long-wavelength long-lifetime organic applications

Language: Английский

Citations

47
Molecular design, synthesis, properties, and applications of organic triplet emitters exhibiting blue, green, red and white room-temperature phosphorescence DOI Creative Commons
Mariia Stanitska, Dmytro Volyniuk, Boris F. Minaev

et al.

Journal of Materials Chemistry C, Journal Year: 2024, Volume and Issue: 12(8), P. 2662 - 2698

Published: Jan. 1, 2024

Theoretical and experimental approaches for the development of organic room temperature phosphorescence compounds exhibiting blue, green, red, white emissions many potential applications are analysed classified.

Language: Английский

Citations

21
Edible Long‐Afterglow Photoluminescent Materials for Bioimaging DOI
Shen Shen,

Qishan Xie,

Smruti Ranjan Sahoo

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(30)

Published: May 13, 2024

Abstract Confining luminophores into modified hydrophilic matrices or polymers is a straightforward and widely used approach for afterglow bioimaging. However, the quantum yield lifetime of related material remain unsatisfactory, severely limiting using effect especially deep‐tissue time‐resolved imaging. This fact largely stems from dilemma between biocompatibility quenching water environment. Herein an in situ metathesis promoted doping strategy presented, namely, mixing ≈10 −3 weight ratio organic‐emitter multicarboxylates with inorganic salt reactants, followed by reactions to prepare series but water‐insoluble organic–inorganic materials. leads formation edible long‐afterglow photoluminescent materials superior excellent bioimaging effect. The phosphorescence can reach dozens percent (the highest case: 66.24%), together lasting coupes seconds. Specifically, barium meal formed coronene emitter BaSO 4 matrix applied animal experiments gavage, bright stomach imaging observed instruments mobile phone after ceasing photoexcitation deep tissue penetration. allows flexible dosage during bioimaging, facilitating development real‐time probing theranostic technology.

Language: Английский

Citations

17
Excellent Persistent Near‐Infrared Room Temperature Phosphorescence from Highly Efficient Host–Guest Systems DOI Creative Commons

Shu-Hui Li,

Juqing Gu,

Jiaqiang Wang

et al.

Advanced Science, Journal Year: 2024, Volume and Issue: 11(28)

Published: May 17, 2024

Abstract Organic near‐infrared (NIR) room temperature phosphorescence (RTP) materials become a hot topic in bioimaging and biosensing for the large penetration depth high signal‐to‐background ratio (SBR). However, it is challenging to achieve persistent NIR severe nonradiative transitions by energy‐gap law. Herein, universal system with RTP built visible (host) (guest) materials, which can efficiently suppress rigid environment of crystalline host good matching, further promote emission additional resonance energy transfer (≈100%) between them. The ten‐folds enhancement lifetimes, compared those guest luminogens, be achieved modulation aggregated structures host–guest systems. This work provides convenient way largely prolong lifetimes various promoting their application afterglow imaging deeper higher SBRs.

Language: Английский

Citations

16
π–π Interaction‐Induced Organic Long‐wavelength Room‐Temperature Phosphorescence for In Vivo Atherosclerotic Plaque Imaging DOI
Yufan Zhang, Ji-Sen Li,

Jiliang Zhao

et al.

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 63(2)

Published: Dec. 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.

Language: Английский

Citations

35
Room temperature phosphorescence materials based on small organic molecules: Design strategies and applications DOI Creative Commons
Meixia He, C. G. Ding, Hexiang Guo

et al.

Deleted Journal, Journal Year: 2024, Volume and Issue: 2(3)

Published: July 23, 2024

Abstract Room‐temperature phosphorescence (RTP) materials have attracted significant attention due to their applications in various fields such as information storage and encryption, organic light‐emitting diode (OLED), sensing, lighting display, biological imaging, photodynamic therapy. Traditionally, RTP can be efficiently developed using inorganic systems with noble metals or rare earth elements. Recently, many efforts been devoted the development of based on small molecules. The strategies construct include hydrogen bonding, heavy atom effect, n –π* transitions, π–π stacking, donor–acceptor host–guest doping. Herein, we summarize recent examples molecules primarily focusing design properties. Moreover, promising OLED, well bio‐imaging phototherapy are discussed. challenges perspectives given provide inspiration toward future materials.

Language: Английский

Citations

14
Construction of Cross‐Linked Polymer Phosphorescence by Functionalization of Cyclotriphosphazene DOI Open Access

Meiyi He,

Ting Tan,

Hui Hou

et al.

Advanced Optical Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 28, 2025

Abstract In recent years, organic room‐temperature phosphorescence (RTP) materials have garnered significant research interest. However, the design and synthesis of novel polymeric RTP systems continue to pose substantial challenges. By leveraging cyclotriphosphazene functionalization, four phosphors are successfully developed. The presence numerous heteroatoms (O, N, P) within this structure significantly enhances molecular spin‐orbit coupling (SOC). Initially, incorporation these into a polyvinyl alcohol (PVA) matrix yielded only weak emissions. Remarkably, thermal annealing transformed long‐lived cross‐linked polymer films. Specifically, representative luminescent film (THMD@PVA) exhibits enhancements in intensity, lifetime, afterglow brightness, quantum yield by factors 8, 4, 18, 6, respectively. With superior mechanical luminescence properties, well‐suited for creating flexible reconfigurable 3D objects. Furthermore, dual fluorescent phosphorescent emissions expands their applicability, including fingerprint recording, thereby broadening application scope materials.

Language: Английский

Citations

1
Ultralong aqueous organic room-temperature phosphorescent probes for in vivo time-resolved bioimaging DOI
Xianyin Dai, Zhenliang Liu, Yanqing Ge

et al.

TrAC Trends in Analytical Chemistry, Journal Year: 2023, Volume and Issue: 168, P. 117339 - 117339

Published: Oct. 7, 2023

Language: Английский

Citations

18
Room Temperature Phosphorescence in Crystalline Iodinated Eumelanin Monomer DOI
Kavya Vinod,

Sohan D. Jadhav,

Mahesh Hariharan

et al.

Chemistry - A European Journal, Journal Year: 2024, Volume and Issue: 30(29)

Published: March 19, 2024

We report the room temperature phosphorescence upon iodination on a crystalline eumelanin monomer with shielded hydroxyl moieties, ethyl 5,6-dimethoxyindole-2-carboxylate (DMICE). Ultrafast intersystem crossing (ISC) is observed in iodinated (IDMICE) as well brominated (BDMICE) analogues of derivative solution. The triplet quantum yields (φ

Language: Английский

Citations

7