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Aggregation-induced emission:Red and near-infrared organic light-emitting diodes

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SmartMat 2021年第3期2卷 326-346页

作者： Liangjing Tu Yujun Xie Zhen Li benzhong tang Institute of Molecular Aggregation Science Tianjin UniversityTianjinChina Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates South China University of TechnologyGuangzhouChina Department of Chemistry Wuhan UniversityWuhanChina Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University Binhai New CityFuzhouChina Wuhan National Laboratory for Optoelectronics WuhanChina Shenzhen Institute of Molecular Aggregate Science and Engineering School of Science and EngineeringThe Chinese University of Hong KongShenzhenGuangdongChina

Red and near-infrared(NIR)organic light-emitting diodes(OLED)have gained remarkable interest due to their numerous ***,the construction of highly emissive emitters is hampered by the energy-gap law and aggregation-caused quenching(ACQ)***,aggregationinduced emission(AIE)materials could avoid the undesirable ACQ effect and emit bright light in aggregated state,which is one class of the most promising materials to fabricate high-performance OLED with a high external quantum efficiency and low efficiency *** review summarizes recent advances in red and NIR OLED with AIE property,including the traditional fluorescence,thermally activated delayed fluorescence,and hybridized local and charge transfer ***,the emphasis attention is paid to the molecular design principles,as well as the molecular structure-photophysical *** also briefly further outlook the challenges and perspective of red and NIR AIE luminogens.

关键词： aggregation-induced emission luminous efficiency organic light-emitting diodes red and near-infrared emission

AIEgen based light-up probes for live cell imaging

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Science China Chemistry 2016年第1期59卷 53-61页

作者： Jing Liang Guangxue Feng Ryan Tsz Kin Kwok Dan Ding benzhong tang Bin Liu Department of Chemical and Biomolecular Engineering National University of Singapore4 Engineering Drive 4117585Singapore NUS Environmental Research Institute National University of Singapore5A Engineering Drive 1117411Singapore Department of Chemistry Division of Biomedical Engineeringthe Hong Kong University of Science and TechnologyKowloonHong KongChina SCUT-HKUST Joint Research Laboratory Guangdong Innovative Research TeamState Key Laboratory of Luminescent Materials and DevicesSouth China University of TechnologyGuangzhou 510640China Institute of Materials Research Engineering Agency for ScienceTechnology and Research3 Research Link117602Singapore

Fluorescent light-up probes comprising a tetraphenylethene unit with aggregation-induced emission(AIE)characteristics and a water-soluble peptide have been designed and synthesized which provide cell membrane and nuclear permeability to live *** strategy has offered new opportunities for the development of probes with light-up ability and good signal-to-noise *** selectivity or targeting specificity is determined by the peptide sequence,i.e.a nuclear localization signal that leads to nucleus imaging and a cell biomarker targeting peptide that offers specific light-up imaging of HT-29 cells.

关键词： aggregation-induced emission(AIE) light-up probe live cell imaging nucleus imaging targeted cell imaging AIE probes

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反构造原理策略实现高稳定有机发光自由基

高等学校化学学报 2019年第9期40卷 1793-1794页

作者：唐本忠香港科技大学化学系

《Nature Materials》杂志最近刊发了吉林大学李峰教授团队关于稳定发光自由基领域的突破性进展.针对有机发光自由基的稳定性问题,作者提出了一种利用给受体分子结构获得具有反构造原理(Aufbau principle)电子结构的有机发光自由基的策... 详细信息

《Nature Materials》杂志最近刊发了吉林大学李峰教授团队关于稳定发光自由基领域的突破性进展.针对有机发光自由基的稳定性问题,作者提出了一种利用给受体分子结构获得具有反构造原理(Aufbau principle)电子结构的有机发光自由基的策略,极大地提高了自由基的稳定性,并保持了高发光效率.采用该反构造原理自由基作为发光层制备的OLED器件获得了超过5%外量子效率的纯有机近红外电致发光.

关键词：有机发光外量子效率构造原理团队合作受体分子

The AIE Journey:from Creative Science to Innovative Technology

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The AIE Journey:from Creative Science to Innovative Technolo...

A facile design for multifunctional AIEgen based on tetraaniline derivatives

第十九届中国科协年会——分8高性能高分子材料——从基础到应用学术研讨会

作者： benzhong tang Department of Chemistry Division of Biomedical Engineering Hong Kong Branch of National Engineering Research Center for Tissue Restoration & Reconstruction The Hong Kong University of Science and Technology

Typical chromophores usually suffer from weakening or quenching of light emission caused by aggregation. This notorious photophysical effect is practically harmful because, in real-world applications, luminophores are commonly used in solid state or aqueous media, where chromophores tend to form aggregates. In 2001, we discovered a diametrically opposite phenomenon that some chromophores are non-emissive when dissolved but emissive upon aggregation. We termed this unusual process as aggregation-induced emission(AIE) and identified the restriction of intramolecular motion(RIM) as the main cause for the AIE eff ect. In the past 15 years, we not only developed a wide variety of AIE luminogens with broad emission range covering the visible and near-IR region but also explored their diverse high-tech applications in such areas as optoelectronic devices, chemo/biosensing, and biological imaging.

关键词： Polymer chemistry aggregation-induced emission

来源： cnki会议评论

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Science China Chemistry 2019年第6期62卷 732-738页

作者： Beibei Liu Wei He Hao Lu Kun Wang Mingming Huang Ryan Tsz Kin Kwok Jacky Wing Yip Lam Longcheng Gao Jiping Yang benzhong tang Key laboratory of Aerospace Advanced Materials and Performance Ministry of Education School of Materials Science and EngineeringBeihang University Department of Chemistry HKUST Jockey Club Institute for Advanced Study Institute of Molecular Functional Materials Division of Biomedical Engineering State Key Laboratory of Molecular Neuroscience Division of Life Science The Hong Kong University of Science and Technology Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education Key Laboratory of Beijing Energy School of Chemistry and Environment Beihang University

Aniline oligomers have been widely used in many fields due to their excellent physicochemical properties. Owing to strong intermolecular interactions, their emission is always weakened or quenched when they are in high concentration or aggregated state, which greatly limits their fluorescent applications. Inspired by the concept of aggregation-induced emission(AIE), herein we introduced large steric groups onto the aniline oligomer to prevent the formation of packing structure. In particular, diphenyl vinyl group was bonded with oligomeric tetraaniline by a facile synthetic procedure with high yield. The obtained aniline oligomer derivative exhibited typical AIE features, which was also confirmed by density functional theoretical calculation. More importantly, this AIE oligomer was able to detect Fe^(3+) ions selectively and quantitatively. The fluorescence intensity decreased linearly along with the increment of Fe^(3+) concentration. Moreover, we demonstrated that this AIE oligomer could stain live bacteria, such as E. coli and S. aureus efficiently. All these results suggest that such a readily accessible and multifunctional tetraaniline derivative provides a new platform for the construction of fluorescent materials.

关键词： tetraaniline aggregation-induced emission Fe3+ ion detection bacteria imaging

Apoptotic extracellular vesicles are metabolized regulators nurturing the skin and hair

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Bioactive Materials 2023年第1期19卷 626-641页

作者： Lan Ma Chider Chen Dawei Liu Zhiqing Huang Jiaqi Li Haixiang Liu Ryan Tsz Kin Kwok benzhong tang Bingdong Sui Xiao Zhang Jianxia tang Xueli Mao Weiying Huang Songtao Shi Xiaoxing Kou Hospital of Stomatology Guanghua School of StomatologySun Yat-sen UniversitySouth China Center of Craniofacial Stem Cell ResearchGuangdong Provincial Key Laboratory of Stomatology510055GuangzhouChina Department of Anatomy and Cell Biology University of PennsylvaniaSchool of Dental MedicinePhiladelphiaPA19104USA Department of Orthodontics Peking University School&Hospital of Stomatology#22 Zhongguancun South AvenueBeijing100081China Department of Chemical and Biological Engineering Department of ChemistryThe Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced StudyThe Hong Kong University of Science and TechnologyClear Water BayKowloonHong KongChina Shenzhen Institute of Aggregate Science and Technology School of Science and EngineeringThe Chinese University of Hong KongShenzhen2001 Longxiang BoulevardLonggang DistrictShenzhen CityGuangdong518172China Key Laboratory of Stem Cells and Tissue Engineering(Sun Yat-Sen University) Ministry of EducationGuangzhouGuangdong510055China

Over 300 billion of cells die every day in the human body,producing a large number of endogenous apoptotic extracellular vesicles(apoEVs).Also,allogenic stem cell transplantation,a commonly used therapeutic approach in current clinical practice,generates exogenous *** is well known that phagocytic cells engulf and digest apoEVs to maintain the body’s *** this study,we show that a fraction of exogenous apoEVs is metabolized in the integumentary skin and hair ***,apoEVs activate the Wnt/β-catenin pathway to facilitate their metabolism in a wave-like *** migration of apoEVs is enhanced by treadmill exercise and inhibited by tail suspension,which is associated with the mechanical force-regulated expression of DKK1 in ***,we show that exogenous apoEVs promote wound healing and hair growth via activation of Wnt/β-catenin pathway in skin and hair follicle mesenchymal stem *** study reveals a previously unrecognized metabolic pathway of apoEVs and opens a new avenue for exploring apoEV-based therapy for skin and hair disorders.

关键词： Apoptosis Extracellular vesicle Metabolized regulator Integumentary system Mesenchymal stem cells

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概念创新是科学追求的圣杯

中国科学基金 2018年第3期32卷 241-242页

作者：唐本忠香港科技大学化学系华南理工大学广东省创新团队广州510006

经过中国科学家过去数十年的不懈努力,中国现已成为全球科学界的一支重要力量。中国每年发表大量的论文,然而,庞大的数字并不等于强大的影响。中国应从科技大国向科技强国进军。实现这一目标,我们必须力求质量而不能仅满足于数量。在诸... 详细信息

经过中国科学家过去数十年的不懈努力,中国现已成为全球科学界的一支重要力量。中国每年发表大量的论文,然而,庞大的数字并不等于强大的影响。中国应从科技大国向科技强国进军。实现这一目标,我们必须力求质量而不能仅满足于数量。在诸多决定研究质量的因素中,概念创新（conceptual novelty）占据决定性的地位。

关键词：中国科学家创新决定性科技质量

Advanced Polymeric Materials for High-tech Innovations

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Chemical Research in Chinese Universities 2001年第Z1期17卷 59-页

作者： tang benzhong Department of Chemistry Hong Kong University of Science Technology Clear Water Bay Kowloon

High technology is advancing our society and modernizing our life and advanced materials play an important role in the technological innovations. My research group has been working on the development of advanced polymeric materials and in this talk I will report our recent work on the creation of new conjugated polymers with novel molecular structures and unique materials properties.1-18 Our work include the design of molecular structures of monomeric building blocks, development of stable, effective and environmentally benign "green” polymerization catalysts, discovery of new polymerization reactions, synthesis of functional macromolecules, fabrication of nanodimensional composites, assembly and control of hierarchical structures, and construction of electrooptical devices. We have revealed the liquid crystallinity, light emission, photoconductivity, optical limiting, nano-hybridization, solvatochromism, optical activity, self-organization, and biological activity of the linear polyacetylenes and hyperbranched polyarylenes. The utilization of the advanced polymers and their interesting materials properties for high-tech innovations will be discussed.

关键词： molecular structures hyperbranched polyarylenes hierarchical structures environmentally benign polymeric materials conjugated polymers biological activity advanced materials building blocks

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含三苯胺超支化聚合物的合成与性能研究

石油化工 2007年第8期36卷 829-833页

作者：郑秀文彭汉唐本忠华南理工大学材料科学与工程学院广东广州510640 香港科技大学化学系香港999077

在以CpCo(CO)2(cp表示环戊二烯基)为催化剂和紫外光照射的条件下,以二-(4-乙炔苯基)-苯胺和1-辛炔为单体合成了新型的含三苯胺超支化聚合物。采用红外光谱、核磁共振谱、热失重分析、紫外吸收光谱、荧光光谱、循环伏安法等方法对聚合物... 详细信息

在以CpCo(CO)2(cp表示环戊二烯基)为催化剂和紫外光照射的条件下,以二-(4-乙炔苯基)-苯胺和1-辛炔为单体合成了新型的含三苯胺超支化聚合物。采用红外光谱、核磁共振谱、热失重分析、紫外吸收光谱、荧光光谱、循环伏安法等方法对聚合物的结构进行表征与性能测试。实验结果表明,聚合物为含三苯胺的超支化聚合物;聚合物都表现出了良好的热稳定性,热失重5%时,分解温度在410℃以上;在光激发的条件下,聚合物在435nm左右处发射蓝色光,荧光量子效率达到75%;聚合物P2的电离势为-5.56eV,有望成为一类很好的空穴传输材料。

关键词：超支化聚合物三苯胺二-(4-乙炔苯基)-苯胺 1-辛炔 [2+2+2]环三聚二羰基茂钴催化剂荧光量子效率