Stabilizing Excited-State of Organic Phosphorescent Photosensitizers via Self-Assembly for Boosting Photoreduction of CO2-to-CO DOI Creative Commons
Zhengxu Cai,

Chenchen Xiong,

Ping Wang

et al.

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 15, 2024

Abstract The development of pure organic photosensitizers remains challenging due to low intersystem crossing (ISC) efficiency and the instability triplet excitons. Herein, a series phosphorescent molecules are prepared as photosensitizers. extensive conjugation fused-ring cores enhances visible-light absorption, while heteroatom-rich structures promote ISC process, effectively generating 2,3,5,6,9,10-Hexabutoxy-8-phenyldithieno-triphenyleno-pyridine (TPy) exhibits high can sensitize Fe-catalyst efficiently for photoreduction CO2-to-CO. A novel strategy doping into core amphiphilic nanoparticles (NPs) formed by polystyrene-block-poly(ethylene glycol) (PS-b-PEG) was further developed. PS, NPs, stabilize excitons generated TPy its rigid polymer backbone, resulting in enhanced photocatalytic efficiency. Meanwhile, PEG serves corona improving stability dispersibility. Notably, this self-assembled increases sensitization (TONCAT = 2041, 51.02 µmol CO) nearly 50%, even after three catalytic cycles, 93.5% original ability is retained. This result opens new avenue developing molecular stabilizing their excited-states efficient application photoredox reactions.

Language: Английский

Advances in Polymer‐Based Organic Room‐Temperature Phosphorescence Materials DOI

Xueyu Dou,

Xu Wang,

Xilei Xie

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(23)

Published: Jan. 28, 2024

Abstract Organic room‐temperature phosphorescence (RTP) materials are actively explored as attractive candidates for optoelectronic and bioelectronics applications given their unique long‐lived excited‐state features inherent merits of low‐cost, appreciable functionality, good biocompatibility. In recent years, many efforts in molecular design aggregation modulation devoted to achiev efficient RTP from organics, among which an emerging strategy focuses on confining chromophores within polymer matrices. Polymers possess intertwined chains making them a platform restrain the nonradiative decays quenching, allowing triplet excitons survive long time enough emission at room temperature. Progress relating polymer‐based organic is highlighted new creative subject field. This review outlines advancements materials. The fundamental mechanism first presented. Thereafter, considerations strategies construct summarized detail. Several promising progresses proposed use these materials, such encryption anti‐counterfeiting, sensors, bioimaging overviewed. Finally, challenges future perspectives discussed emphasize directions that deserve focus attention

Language: Английский

Citations

43
Cycloolefin Copolymers With a Multiply Rigid Structure for Protecting Triplet Exciton From Thermo‐ and Moisture‐Quenching DOI Open Access

Shiman Tang,

Shunnan Jiang,

Kaiti Wang

et al.

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

Published: Jan. 26, 2025

Abstract Polymeric room temperature phosphorescence (RTP) materials have been well developed and utilized in various fields. However, their fast thermo‐ moisture‐quenching behavior highly limit applications certain harsh environments. Therefore, the preparation of with moisture‐resistant is greatly attractive. Compared common water‐soluble polymers, cycloolefin copolymers (COC) show outstanding hydrophobicity higher rigidity, even at elevated temperatures, being as a promising candidate to prepare suppressed behavior. Herein, type COC bearing hydroxyl, ester, adamantanyl side groups synthesized. After dispersing phosphors into this matrix, resultant composites exhibit full‐color RTP lifetimes 249–590 ms. Their luminescence does not obvious quenching water, acid, alkalinous, reductive, oxidative In presence both rigid matrix phosphors, corresponding composite displays high‐temperature performance. Even 378 K, can emit lifetime 40–98 The these COC‐based for imaging, information encryption, anti‐counterfeiting are thus explored.

Language: Английский

Citations

1
Excitation-wavelength-dependent persistent luminescence from single-component nonstoichiometric CaGaxO4:Bi for dynamic anti-counterfeiting DOI Creative Commons
Bo‐Mei Liu, Yue Lin, Yingchun Liu

et al.

Light Science & Applications, Journal Year: 2024, Volume and Issue: 13(1)

Published: Oct. 10, 2024

Materials capable of dynamic persistent luminescence (PersL) within the visible spectrum are highly sought after for applications in display, biosensing, and information security. However, PersL materials with eye-detectable excitation-wavelength-dependent characteristics rarely achieved. Herein, a nonstoichiometric compound CaGa

Language: Английский

Citations

7
Scalable fabrication of red Room-Temperature phosphorescent materials through molecular doping strategy for versatile applications DOI
Jiaju Shi, Yusheng Zhou, Wen Wang

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 492, P. 152419 - 152419

Published: May 20, 2024

Language: Английский

Citations

6
“Twin Chain” PVA Cryogels with Controlled Tortuosity as Advanced Materials for Cleaning of Works of Art DOI
Rosangela Mastrangelo, Damiano Bandelli, Luciano Pensabene Buemi

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: April 12, 2024

Abstract Soft matrices with tuned properties are part of the vast landscape innovative materials for restoration works art. “Twin chain” polymer networks (TC‐PNs) based on polyvinyl alcohol have proven unique as scaffolds Cultural Heritage cleaning. They enable optimum adaptability, adhesion, porosity, and connectivity at both micro‐ nano‐scale resulting in superior time/space‐controlled cleaning operations. In this work, TC‐PNs through a mild crosslinking poly(vinyl alcohol) (PVA)‐porogen by using sebacic, adipic, or succinic acid. The modified porogens different structural features imparting phase behavior to TC‐PVAs mixtures aqueous solution, i.e., pre‐gel systems used form gels liquid–liquid separation. macro‐, micro‐, nanoscale final characterized Confocal Laser Scanning Microscopy, Small Angle X‐ray Scattering, Rheology related their performances. study shows that capacity is tortuosity, can be tailored nanoscale. Counterintuitively higher tortuosity show better performances evidenced mockups paintings from Jean Helion, Jackson Pollock, Tancredi Parmeggiani Peggy Guggenheim Collection Venice.

Language: Английский

Citations

4
Construction of starch-based room temperature phosphorescence materials with wide color-tunable long afterglow and even persistent near-infrared luminescence via Förster resonance energy transfer DOI

Shaochen Sun,

Tianyu Li, Yan Zhu

et al.

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 284, P. 138175 - 138175

Published: Nov. 28, 2024

Language: Английский

Citations

4
Ligand-to-Ligand Charge Transfer Induced Red-Shifted Room Temperature Phosphorescence in Metal–Organic Frameworks DOI

Qicheng Yu,

Zihao Deng, Rundao Chen

et al.

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: March 12, 2025

Research on room temperature phosphorescence (RTP) of metal-organic frameworks (MOFs) has been rapidly developed in recent years. However, it is still challenging to realize long-wavelength RTP (>580 nm). In this article, a new strategy proposed achieve the red-shifted through constructing dual-ligand MOFs. Different from single-ligand MOF, which lacks intermolecular interaction, MOF can build up stable donor-acceptor (D-A) relationship between two suitable simple ligands. Therefore, induced charge transfer (CT) process donor units acceptor framework decrease energy gap frontier orbitals, reducing excited state levels. Moreover, by modulating electron density and conjugation ligand, triplet states MOFs be further reduced. As result, centered at 588 nm successfully achieved MOF. Also, we clearly describe transporting path among ground, 1CT, 3CT states, revealing emitting mechanism RTP. This work not only extends D-A structure molecular level periodic but also solves problem achieving perspective.

Language: Английский

Citations

0
Near‐Infrared Organic Ultralong Room‐Temperature Phosphorescence Materials Constructed via Multiple Phosphorescence Resonance Energy Transfer DOI Open Access

Longyue Yu,

Ning Feng, Wenwen Fu

et al.

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

Published: Jan. 30, 2025

Abstract Organic ultralong room‐temperature phosphorescence (OURTP) materials with white and near‐infrared (NIR) emission have unparalleled advantages in information encryption, bio‐imaging, science. However, limited by the energy gap law, NIR OURTP (exceeding 700 nm) are very rare, furthermore, these typically exhibit brief lifetimes. Therefore, there is an urgent need to find methods achieve afterglow lifetimes from organic chromophores. Here, a universal strategy has been proposed endow polymeric wide color, lifetimes, persistent based on multiple sequential resonance transfer (P‐FRET). The poly(acrylamide‐co‐N‐vinylcarbazole) (PAMCz) blue‐emission act as donor while traditional highly fluorescent dyes (BODIPY derivatives, rhodamine b (RhB) sulfo‐cyanine5 (Cy5)) green/red/NIR fluorescence acceptor. Significantly, multi‐pathway P‐FRET shows distinct over single‐path PRET, including higher antennae effect (AE), broader spectrum of color‐tunability facilitated intermediary acceptor, improved intensity terminal By simply regulating doping composition concentration acceptors, perfect white‐emission CIE coordinate (0.336, 0.330) NIR‐emission 2.7 s successfully realized.

Language: Английский

Citations

0
Multicolor Long-Persistent Luminescence with High Phosphorescence Quantum Yield and Long Lifetime in Ultrahigh Elastic Fibers DOI
Xiaoyan Wang, Zheng Zhang, Shuangqiao Yang

et al.

ACS Materials Letters, Journal Year: 2025, Volume and Issue: unknown, P. 928 - 937

Published: Feb. 10, 2025

Language: Английский

Citations

0
Polylactic Acid (PLA)-Based Persistent Room-Temperature Phosphorescence Polymer Nanoparticles for Bioimaging DOI
Kaimin Zhang,

Danman Guo,

Tianyi Tang

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 26, 2025

Recent advancements have focused on developing nanoscale persistent room-temperature phosphorescence (pRTP) structures to expand their applicability in biomedical fields. Traditional fabrication methods typically produce surface-coated core-shell pRTP nanoparticles composed of nonbiocompatible emitters at very high concentrations the core. To overcome this limitation, polymeric nanosystems been presented study as a promising alternative by embedding RTP molecules within biocompatible polymer matrix, thereby significantly reducing required concentration molecules. These were fabricated using poly(lactic acid) (PLA) matrix an effective microemulsion-based method. They exhibited similar properties traditional nanoparticles, showing comparable long-lasting with lifetime 118 ms even when phosphorescent molecule content is below 2%. Moreover, excellent biocompatibility and stability demonstrate interesting reversible photoactivated properties. successfully applied for vivo imaging signal-to-noise ratio (SBR) 2061, maintaining strong long-lived emissions 20 min. results highlight viable approach advancing technology biological applications.

Language: Английский

Citations

0