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Conformational Isomerization Imparts Low Concentration Sensitivity to Multiple Resonance Thermally Activated Delayed Fluorescence (Mr-Tadf) Emitters

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SSRN 2023年

作者： Shi, Yi-Zhong Wu, Hao Li, Mo-Yuan Fan, Xiao-Chun Huang, Feng Wang, Kai Yu, Jia Zhang, Xiao-Hong Soochow University Jiangsu Suzhou215123 China School of Materials Science and Engineering Suzhou University of Science and Technology Suzhou215009 China Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices Soochow University Jiangsu Suzhou215123 China Jiangsu Key Laboratory of Advanced Negative Carbon Technologies Soochow University Jiangsu Suzhou215123 China

Multiple resonance (MR) type thermally activated delayed fluorescence (TADF) emitters exhibit poor concentration sensitivity due to the flat molecular structures, which is a major issue toward practical applications. Herein, an effective approach reducing the concentration sensitivity is proposed by introducing conformational isomerism for MR-TADF emitters. Two novel MR-TADF emitters were designed by decorating 10H-spiro[acridine-9,2'-adamantane] (a-DMAc) as a dual-conformational moiety onto the MR-core BNCz with different connection methods, which could induce different conformational distributions. In particular, for BNCz-aDMAC with directly linking aDMAC moiety to the BNCz moiety, the quasi-equatorial (QE) form is less popular but dominating in the photophysics in amorphous states, thus enabling effective suppression of concentration quenching with barely harming color purity. Therefore, BNCz-aDMAC-based OLEDs demonstrate consistent and high efficiency over a wide doping range, maintaining a maximum external quantum efficiency of 23.8% and a full width at half maximum of 31 nm even at a high doping ratio of 30 wt%. © 2023, The Authors. All rights reserved.

关键词： Efficiency

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Spatiotemporal Acoustic Vortex Beams with Transverse Orbital Angular Momentum

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Physical Review Letters 2023年第1期131卷 014001-014001页

作者： Hao Ge Shuai Liu Xiang-Yuan Xu Zi-Wei Long Yuan Tian Xiao-Ping Liu Ming-Hui Lu Yan-Feng Chen National Laboratory of Solid State Microstructures & Department of Materials Science and Engineering Nanjing University Nanjing Jiangsu 210093 China School of Physical Science and Technology ShanghaiTech University Shanghai 201210 China Jiangsu Key Laboratory of Artificial Functional Materials Nanjing University Nanjing Jiangsu 210093 China Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210093 China

Recently, the discovery of optical spatiotemporal (ST) vortex beams with transverse orbital angular momentum (OAM) has attracted increasing attention and is expected to extend the research scope and open new opportunities for practical applications of OAM states. The ST vortex beams are also applicable to other physical fields that involve wave phenomena, and here we develop the ST vortex concept in the field of acoustics and report the generation of Bessel-type ST acoustic vortex beams. The ST vortex beams are fully characterized using the scalar approach for the pressure field and the vector approach for the velocity field. We further investigate the transverse spreading effect and construct ST vortex beams with an ellipse-shaped spectrum to reduce the spreading effect. We also experimentally demonstrated the orthogonality relations between ST vortex beams with different charges. Our study successfully demonstrates the versatility of the acoustic system for exploring and discovering spatiotemporally structured waves, inspiring further investigation of exotic wave physics.

关键词： Acoustic measurements Acoustic wave phenomena

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Effect of physicochemical properties on in vivo fate of nanoparticle-based cancer immunotherapies

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Acta Pharmaceutica Sinica B 2021年第4期11卷 886-902页

作者： Yongchao Wang Jinjin Wang Dandan Zhu Yufei Wang Guangchao Qing Yuxuan Zhang Xiaoxuan Liu Xing-Jie Liang State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases Center of Drug DiscoveryCenter of Advanced Pharmaceutics and BiomaterialsChina Pharmaceutical UniversityNanjing 210009China Laboratory of Controllable Nanopharmaceuticals Chinese Academy of Sciences(CAS)Center for Excellence in Nanoscience and CAS Key Laboratory for Biomedical Effects of Nanomaterials and NanosafetyNational Center for Nanoscience and TechnologyBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China

Current advances of immunotherapy have greatly changed the way of cancer *** the same time,a great number of nanoparticle-based cancer immunotherapies(NBCIs)have also been explored to elicit potent immune responses against ***,few NBCIs are nearly in the clinical trial which is mainly ascribed to a lack understanding of in vivo fate of nanoparticles(NPs)for cancer *** for cancer immunotherapy mainly target the immune organs or immune cells to enable effcient antitumor immune *** physicochemical properties of NPs including size,shape,elasticity and surface properties directly affect their interaction with immune systems as well as their in vivo fate and therapeutic ***,systematic analysis of the physicochemical properties and their effect on in vivo fate is urgently *** this review,we frst recapitulate the fundamentals for the in vivo fate of NBCIs including physio-anatomical features of lymphatic system and strategies to modulate immune ***,we highlight the effect of physicochemical properties on their in vivo fate including lymph nodes(LNs)drainage,cellular uptake and intracellular *** and opportunities for rational design of NPs for cancer immunotherapy are also discussed in detail.

关键词： Physicochemical properties Nanoparticle-based cancer immunotherapies Cancer treatment In vivo fate Immune responses Lymph nodes drainage Cellular uptake Intracellular transfer

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Self-Supervised Monocular Depth Estimation with Effective Feature Fusion and Self Distillation

Self-Supervised Monocular Depth Estimation with Effective Fe...

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IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)

作者： Zhenfei Liu Chengqun Song Jun Cheng Jiefu Luo Xiaoyang Wang Guangdong Provincial Key Laboratory of Robotics and Intelligent System Shenzhen Institute of Advanced Technology Chinese Academy of Sciences China University of Chinese Academy of Sciences Beijing China The Chinese University of Hong Kong Hong Kong China

ISBN: (数字)9798350377705

ISBN: (纸本)9798350377712

Monocular depth estimation obtaining scene depth information from a single image is an important task in the field of computer vision. Constrained by the limitations of convolutional networks in conducting long-distance modeling and the underutilization of datasets, the generalization of existing models is not satisfactory. In this paper, we propose an adaptive backbone named Internal Fusion Transformer to improve generalization ability compared to convolutional backbone, like HRNet, and a Bilateral Attention module which pays more attention to low-level semantic features compared to previous fuse methods. Meanwhile, we introduce three data augmentation methods, namely cropping-resizing (cr), cropping-shuffling (cs), and mirroring (mi), for self distillation, as well as discuss their contributions to model performance improvement. Our model is trained on the KITTI dataset, and without fine-tuning, tested on NYUv2 and Make3D datasets to confirm the generalization. The experimental results illustrate the effectiveness of our design. Our model also demonstrates better performance compared to other models on the KITTI dataset.

关键词： Training Adaptation models Accuracy Depth measurement Computational modeling Semantics Data augmentation Transformers Data models Robustness

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Effect of Cu valence states on conduction band position and reduction selectivity of TiO₂-based heterojunction photocatalysts

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iScience 2025年第6期28卷 112697页

作者： Qian, Hong Yuan, Binxia Liu, Yuhao Wang, Li Zhu, Rui Dong, Pengyu College of Energy and Mechanical Engineering Shanghai University of Electric Power Shanghai 201306 China Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province Yancheng Institute of Technology Yancheng 224051 China

TiO2 has low photocatalytic activity due to its easy recombination of photogenerated charges and low visible light utilization efficiency. This study utilized the keto-enol tautomerism principle of fructose in an alka... 详细信息

TiO₂ has low photocatalytic activity due to its easy recombination of photogenerated charges and low visible light utilization efficiency. This study utilized the keto-enol tautomerism principle of fructose in an alkaline environment to successfully obtain Cu₂O/TiO₂ (CT), Cu₂O/TiO₂/Cu (CTC), and TiO₂/Cu (TC) catalysts. As Cu(I) transformed into Cu(0), the bandgap narrowed, significantly enhancing visible light absorption. Photocatalytic tests showed that CT-0.15 exhibited the highest hydrogen production rate (279.53 μmol g⁻¹ h⁻¹), which was 25.18 times higher than that of TC-2. However, CTC-1 had the highest CO production rate (10.58 μmol g⁻¹ h⁻¹). Optoelectronic test revealed that CT-0.15 and CTC-1 had higher separation efficiency of photogenerated exciton. Density functional theory (DFT) calculations indicated that the change in the valence state of Cu influenced the reaction mechanism, with CT being favorable for the adsorption of H⁺ in HER and CTC promoting the adsorption of CO₂ in carbon dioxide reduction reaction (CO2RR). © 2025 The Authors

关键词： catalysis Chemistry

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Extraterrestrial artificial photosynthetic materials for in-situ resource utilization

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National Science Review 2021年第8期8卷 108-133页

作者： Liuqing Yang Ce Zhang Xiwen Yu Yingfang Yao Zhaosheng Li Congping Wu Wei Yao Zhigang Zou Eco-Materials and Renewable Energy Research Center(ERERC) Jiangsu Key Laboratory for Nano TechnologyNational Laboratory of Solid State MicrostructuresSchool of PhysicsNanjing University Collaborative Innovation Center of Advanced Microstructures College of Engineering and Applied SciencesNanjing University Kunshan Innovation Institute of Nanjing University Macau Institute of Systems Engineering Macau University of Science and Technology School of Science and Engineering The Chinese University of Hong Kong Qian Xuesen Laboratory of Space Technology China Academy of Space Technology Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology

Aerospace milestones in human history, including returning to the moon and manned Martian missions,have been implemented in recent years. Space exploration has become one of the global common goals, and to ensure the survival and development of human beings in the extraterrestrial extreme environment has been becoming the basic ability and technology of manned space exploration. For the purpose of fulfilling the goal of extraterrestrial survival, researchers in Nanjing University and the China Academy of Space technology proposed extraterrestrial artificial photosynthesis(EAP) technology. By simulating the natural photosynthesis of green plants on the Earth, EAP converts CO/HO into fuel and Oin an in-situ,accelerated and controllable manner by using waste COin the confined space of spacecraft, or abundant COresources in extraterrestrial celestial environments, e.g. Mars. Thus, the material loading of manned spacecraft can be greatly reduced to support affordable and sustainable deep space exploration. In this paper, EAP technology is compared with existing methods of converting CO/HO into fuel and Oin the aerospace field, especially the Sabatier method and Bosch reduction method. The research progress of possible EAP materials for in-situ utilization of extraterrestrial resources are also discussed in depth. Finally,this review lists the challenges that the EAP process may encounter, which need to be focused on for future implementation and application. We expect to deepen the understanding of artificial photosynthetic materials and technologies, and aim to strongly support the development of manned spaceflight.

关键词： solar energy extraterrestrial survival artificial photosynthesis CO2 reduction oxygen evolution

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Consistent Prompting for Rehearsal-Free Continual Learning

Consistent Prompting for Rehearsal-Free Continual Learning

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Conference on Computer Vision and Pattern Recognition (CVPR)

作者： Zhanxin Gao Jun Cen Xiaobin Chang School of Artificial Intelligence Sun Yat-sen University China Cheng Kar-Shun Robotics Institute The Hong Kong University of Science and Technology China Key Laboratory of Machine Intelligence and Advanced Computing Ministry of Education China

ISBN: (数字)9798350353006

ISBN: (纸本)9798350353013

Continual learning empowers models to adapt autonomously to the ever-changing environment or data streams without forgetting old knowledge. Prompt-based approaches are built on frozen pre-trained models to learn the task-specific prompts and classifiers efficiently. Existing prompt-based methods are inconsistent between training and testing, limiting their effectiveness. Two types of inconsistency are revealed. Test predictions are made from all classifiers while training only focuses on the current task classifier without holistic alignment, leading to Classifier inconsistency. Prompt inconsistency indicates that the prompt selected during testing may not correspond to the one associated with this task during training. In this paper, we propose a novel prompt-based method, Consistent Prompting (CPrompt), for more aligned training and testing. Specifically, all existing classifiers are exposed to prompt training, resulting in classifier consistency learning. In addition, prompt consistency learning is proposed to enhance prediction robustness and boost prompt selection accuracy. Our Consistent Prompting surpasses its prompt-based counterparts and achieves state-of-the-art performance on multiple continual learning benchmarks. Detailed analysis shows that improvements come from more consistent training and testing. Our code is available at https://***/Zhanxin-Gao/CPrompt.

关键词： Training Continuing education Adaptation models Computer vision Accuracy Limiting Robustness

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Observation of Chiral Symmetry Breaking in Toroidal Vortices of Light

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Physical Review Letters 2024年第15期132卷 153801-153801页

作者： Wei Chen Yuan Liu An-Zhuo Yu Han Cao Wei Hu Wen Qiao Lin-Sen Chen Yan-Qing Lu National Laboratory of Solid State Microstructures Key Laboratory of Intelligent Optical Sensing and Manipulation College of Engineering and Applied Sciences and Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210093 China School of Optoelectronic Science and Engineering and Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University 215006 Suzhou China Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province and Key Lab of Modern Optical Technologies of Education Ministry of China Soochow University 215006 Suzhou China

In this Letter, we explore the intersection of chirality and recently discovered toroidal spatiotemporal optical vortices (STOVs). We introduce “photonic conchs” theoretically as a new type of toroidal-like state exhibiting geometrical chirality, and experimentally observe these wave packets with controllable topological charges. Unlike toroidal STOVs, photonic conchs exhibit unique chirality-related dynamical evolution in free space and possess an orbital angular momentum correlated with all the dimensions of space-time. This research deepens our understanding of toroidal light states and potentially advances various fields by unveiling similar wave phenomena in a broader scope of physics systems, including acoustics and electronics.

关键词： Structured light Ultrafast optics

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Cross-polarization error correction enhanced polarization-division-multiplexed differential detection system for optical fiber communications

Cross-polarization error correction enhanced polarization-di...

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OptoElectronics and Communications Conference, OECC

作者： Chenxu Jiang Yi Cai Xiaozhou Wang Zhongxing Tian Fuhan Wang Huan Huang Jun Zhou Xiangyong Hao Shengqing Pang Suzhou Key Laboratory of Advanced Optical Communication Network Technology Soochow University Suzhou China Jiangsu Hengxin Semitech Co. Ltd Suzhou China

We propose a novel cross-polarization error correction (CPEC) algorithm for polarization-division-multiplexed differential quadrature-phase-shift-keying (PDMDQPSK) systems. The obtained results show that 1-dB sensitiv...

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g-C3N4/BaTiO3/PVDF membrane photocatalytic degradation of tetracycline

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Journal of Industrial and Engineering Chemistry 2025年

作者： Gan, Jiahao Wang, Huijie Li, Jinze Song, Xianghai Liu, Xin Jiang, Jizhou Huo, Pengwei Institute of Green Chemistry and Chemical Technology School of Chemistry & Chemical Engineering Jiangsu University Zhenjiang212013 China China Construction Eco-Environmental Protection Technology Co Ltd Jiangsu Suzhou215128 China School of Materials Science and Engineering State Key Laboratory of Green and Efficient Development of Phosphorus Resources Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education Key Laboratory of Green Chemical Engineering Process of Ministry of Education Hubei Key Laboratory of Plasma Chemistry and Advanced Materials Novel Catalytic Materials of Hubei Engineering Research Center Wuhan Institute of Technology Wuhan430205 China

Environmental pollution poses a major hurdle to sustainable development, and harnessing solar energy for water treatment has emerged as a promising solution. In this study, flexible, macroporous photocatalytic membranes were developed by combining photocatalysis with membrane separation technology and hydrogen peroxide (H2O2), aiming to improve the degradation efficiency of tetracycline (TC). The g-C3N4/BaTiO3/PVDF photocatalytic membranes were fabricated using a phase inversion method, which successfully addressed challenges such as catalyst agglomeration and recovery difficulties, surpassing traditional membrane separation methods. Additionally, the g-C3N4/BaTiO3 photocatalyst exhibited excellent compatibility with PVDF. Under 120 min of xenon lamp irradiation, the membranes achieved a TC degradation efficiency of 90.63 %. These membranes also demonstrated remarkable permeability, and they maintained high stability and reusability after five degradation cycles, showcasing their promising potential for photocatalytic water treatment applications. © 2025 The Korean Society of Industrial and Engineering Chemistry

关键词： Membrane technology

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