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Quantitative Proteomics Profiling Unravels Synergetic Neuroprotective Effect of Novel Combination of Chrysin and Protocatechuic Acid on Experimental Model of Parkinson’s Disease:Their Role on Nrf2/ARE Signaling

Quantitative Proteomics Profiling Unravels Synergetic Neurop...

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第十四届全国中药和天然药物学术研讨会

作者： Guohui Li Zaijun Zhang Quan Quan Yun Zhao Samuel S.W.Szeto herman lam Simon M.Y.Lee Ivan K.Chu The University of Hong Kong Jinan University University of Macau

＜正＞Although ethanolic extract of Alpinia oxyphylla（AOE）has displayed promising protective effects against 6-hydroxydopamine（6-OHDA）-induced injury in PC12 cells and zebrafish dopaminergic neurons,its bioactive components have remained *** this present study,we elucidated the synergistic neuroprotective effects of two polyphenols present in

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In-situ generation of poly(quinolizine)s via catalyst-free polyannulations of activated diyne and pyridines

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Science China Chemistry 2022年第4期65卷 789-795页

作者： Benzhao He Jiachang Huang Jing Zhang Xinyue Liu Dong Wang herman H.Y.Sung Yajun Liu Anjun Qin Jacky W.Y.lam Ben Zhong Tang Center for Advanced Materials Research Science and Technology Experimental PlatformAdvanced Institute of Natural SciencesBeijing Normal University at ZhuhaiZhuhai 519085China Department of Chemistry Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstructionand Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional MaterialsThe Hong Kong University of Science&TechnologyKowloonHong KongChina Center for AIE Research College of Materials Science and EngineeringShenzhen UniversityShenzhen 518060China Department of Laboratory Medicine Nanfang HospitalSouthern Medical UniversityGuangzhou 510515China State Key Laboratory of Luminescent Materials and Devices Guangdong Provincial Key Laboratory of Luminescence from Molecular AggregatesCenter for Aggregation-Induced EmissionSouth China University of TechnologyGuangzhou 510640China HKUST-Shenzhen Research Institute Shenzhen 518057China Shenzhen Institute of Aggregate Science and Technology School of Science and EngineeringThe Chinese University of Hong KongShenzhen 518172China

The development of new polymerization routes to afford N-heterocyclic polymers is of vital importance and highly desired for various practical applications. Herein, a facile and efficient polyannulation reaction of dual-activated alkyne and pyridines was developed to construct novel N-heterocyclic poly(quinolizine)s. This polymerization can proceed smoothly under catalystfree conditions with 100% atom utilization to furnish poly(quinolizine)s with high molecular weights(up to 34,100) and welldefined structures in acceptable yields. The resulting polymers show good solubility, high thermal stability and strong red emission. Moreover, the prepared poly(quinolizine)s exhibit low cytotoxicity and can selectively label lysosomes in live *** the remarkable advantages of readily available raw materials, mild polymerization conditions, atom economy, and excellent product performance, this new and efficient polymerization tool will open up enormous opportunities for preparing functional N-heterocyclic polymers.

关键词： polyannulation activated alkyne N-heterocyclic polymers poly(quinolizine)s bioimaging

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A Simple Approach to Achieve Organic Radicals with Unusual Solid-State Emission and Persistent Stability

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CCS Chemistry 2022年第6期4卷 1912-1920页

作者： Xueqian Zhao Junyi Gong Parvej Alam Chao Ma Yanpei Wang Jing Guo Zebin Zeng Zikai He herman H.Y.Sung Ian D.Williams Kam Sing Wong Sijie Chen Jacky W.Y.lam Zheng Zhao Ben Zhong Tang Department of Chemistry Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and ReconstructionInstitute for Advanced Study and Guangdong-Hong Kong-Macro Joint Laboratory of Optoelectronic and Magnetic Functional MaterialsHong Kong University of Science and TechnologyClear Water BayKowloonHong Kong 999077 Department of Physics Hong Kong University of Science and TechnologyClear Water BayKowloonHong Kong 999077 State Key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical EngineeringHunan UniversityChangshaHunan Province 410082 School of Science Harbin Institute of TechnologyShenzhenHIT Campus of University TownShenzhenGuangdong Province 518055 Ming Wai Lau Centre for Reparative Medicine Karolinska InstitutetHong Kong 999077 School of Science and Engineering Chinese University of Hong KongShenzhenGuangdong Province 518172 HKUST-Shenzhen Research Institute South Area Hi-Tech ParkNanshanShenzhenGuangdong Province 518057 Center for Aggregation-Induced Emission SCUTHKUST Joint Research InstituteState Key Laboratory of Luminescent Materials and DevicesSouth China University of TechnologyGuangzhouGuangdong Province 510640 AIE Institute Guangzhou Development DistrictHuangpuGuangzhouGuangdong Province 510530

Sable organic radicals are promising materials for information storage,molecular magnetism,electronic devices,and biological *** organic radicals have been prepared,but most are non-or weakly emissive and degrade easily upon *** remains challenging to produce stable and efficient luminescent radicals because of the absence of general guidelines for their ***,we present a photoactivation approach to generate a stable luminescent radical from tris(4-chlorophenyl)phosph ine(TCPP)with red emission in the crystal *** mechanistic study suggests that the molecular symmetry breaking in the crystal causes changes of molecular conformation,redox properties,andmolecular packing that facilitates radical generation and *** design strategy demonstrates a straightforward approach to develop stable organic luminescent radicals that will open new doors to photoinduced luminescent radical materials.

关键词： luminescent radicals symmetry breaking tris(4-chlorophenyl)phosphine anticounterfeiting photoinduced electron transfer

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