Asymmetric intramolecular charge transfer enables highly efficient red thermally activated delayed fluorescent emitters

Qu, Chen; Wang, Huiqin; Man, Yi; Li, Zhe; Ma, Peng; Chang, Peng; Li, Xin; Han, Chunmiao; Pang, Yudong; Xu, Hui

doi:10.1016/j.cej.2022.141061

Cited by 8 publications

(1 citation statement)

References 36 publications

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“…The PL spectrum characterized the separation efficiency of e − and h + , and higher intensity represented lower separation efficiency [ 43 ]. As shown in Figure 3 a, it is clear that the PL emission peak of Cu 2 O@rGO was lower than that of Cu 2 O, indicating its better efficiency of charge transfer and its better ability to prevent the electron-hole recombination [ 44 , 45 ].…”

Section: Resultsmentioning

confidence: 99%

A Photochemically Active Cu2O Nanoparticle Endows Scaffolds with Good Antibacterial Performance by Efficiently Generating Reactive Oxygen Species

He,

Zan,

et al. 2024

Nanomaterials

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Cuprous oxide (Cu2O) has great potential in photodynamic therapy for implant-associated infections due to its good biocompatibility and photoelectric properties. Nevertheless, the rapid recombination of electrons and holes weakens its photodynamic antibacterial effect. In this work, a new nanosystem (Cu2O@rGO) with excellent photodynamic performance was designed via the in situ growth of Cu2O on reduced graphene oxide (rGO). Specifically, rGO with lower Fermi levels served as an electron trap to capture photoexcited electrons from Cu2O, thereby promoting electron-hole separation. More importantly, the surface of rGO could quickly transfer electrons from Cu2O owing to its excellent conductivity, thus efficiently suppressing the recombination of electron-hole pairs. Subsequently, the Cu2O@rGO nanoparticle was introduced into poly-L-lactic acid (PLLA) powder to prepare PLLA/Cu2O@rGO porous scaffolds through selective laser sintering. Photochemical analysis showed that the photocurrent of Cu2O@rGO increased by about two times after the incorporation of GO nanosheets, thus enhancing the efficiency of photogenerated charge carriers and promoting electron-hole separation. Moreover, the ROS production of the PLLA/Cu2O@rGO scaffold was significantly increased by about two times as compared with that of the PLLA/Cu2O scaffold. The antibacterial results showed that PLLA/Cu2O@rGO possessed antibacterial rates of 83.7% and 81.3% against Escherichia coli and Staphylococcus aureus, respectively. In summary, this work provides an effective strategy for combating implant-related infections.

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Section: Resultsmentioning

confidence: 99%

A Photochemically Active Cu2O Nanoparticle Endows Scaffolds with Good Antibacterial Performance by Efficiently Generating Reactive Oxygen Species

He,

Zan,

et al. 2024

Nanomaterials

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基于蒽和三苯胺基D–π–A结构的蓝色荧光材料在有机发光和紫外探测集成器件中的应用

Dong,

Bai,

Wang

et al. 2023

Sci. China Mater.

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Acceptor/π-bridge planarization and donor rotation manipulation for designing an NIR-II AIEgen with high photothermal conversion efficiency to enhance cancer phototherapy

Shen

Zhang

et al. 2023

Chemical Engineering Journal

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Asymmetric intramolecular charge transfer enables highly efficient red thermally activated delayed fluorescent emitters

Cited by 8 publications

References 36 publications

A Photochemically Active Cu2O Nanoparticle Endows Scaffolds with Good Antibacterial Performance by Efficiently Generating Reactive Oxygen Species

A Photochemically Active Cu2O Nanoparticle Endows Scaffolds with Good Antibacterial Performance by Efficiently Generating Reactive Oxygen Species

基于蒽和三苯胺基D–π–A结构的蓝色荧光材料在有机发光和紫外探测集成器件中的应用

Acceptor/π-bridge planarization and donor rotation manipulation for designing an NIR-II AIEgen with high photothermal conversion efficiency to enhance cancer phototherapy

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Asymmetric intramolecular charge transfer enables highly efficient red thermally activated delayed fluorescent emitters

Cited by 8 publications

References 36 publications

A Photochemically Active Cu2O Nanoparticle Endows Scaffolds with Good Antibacterial Performance by Efficiently Generating Reactive Oxygen Species

A Photochemically Active Cu2O Nanoparticle Endows Scaffolds with Good Antibacterial Performance by Efficiently Generating Reactive Oxygen Species

基于蒽和三苯胺基D–π–A结构的蓝色荧光材料在有 机发光和紫外探测集成器件中的应用

Acceptor/π-bridge planarization and donor rotation manipulation for designing an NIR-II AIEgen with high photothermal conversion efficiency to enhance cancer phototherapy

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Product

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基于蒽和三苯胺基D–π–A结构的蓝色荧光材料在有机发光和紫外探测集成器件中的应用