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Species composition and diversity of Euphausiacea in the East China Sea

Acta Oceanologica Sinica 2005年第4期24卷 98-106页

作者： XU Zhaoli li chunju Key and Open Laboratory of Marine and Estuarine Fisheries of Ministry of Agriculture of China East China Sea Fisheries Research Institute Chinese Academy of Fisheries Sciences Shanghai 200090 China

Based on the data of four seasonal oceanographic censuses in the East China Sea （23°30＇-33°00＇N, 118°30＇-128°00＇E） in 1997-2000, the species composition and the diversity of Euphausiacea were discussed as well as their relations with environmental variables. Results showed that there were totally 23 different species of Euphausiacea, in which 16 occurred in spring and autumn respectively; 15 were present in summer and only 10 were observed in winter. According to the calculated alternation fraction （R）, the species composition showed a clear seasonal alternation with the changes of seasons. Moreover, the environmental variables had different impacts on the distribution of Euphausiacea in different seasons. The distribution in summer was not significantly related to water temperature and salinity. However, the surface salinity was a major determinant of the distribution in spring. In autumn, both surface and bottom temperatures were influencing factors. The distribution in winter depended on salinity at the surface and 10 m depth as well as the temperature at 10 m depth. Regarding to the seasonal variation of species composition, the variations in spring, summer and autumn were not so significant as those in winter. Except in summer, the species number changed with synchronous water temperature and salinity, as a result of the presence of warm currents in the East China Sea and the habitability of the dominant species. Since Euphausiacea tend to agglomerate, the distribution of different species was uneven, which was the major reason for the low diversity of Euphausiacea in the East China Sea.

关键词： zooplankton Euphausiacea diversity species composition East China Sea

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Study on abundance variation of pteropods in the East China Sea

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Acta Oceanologica Sinica 2006年第1期25卷 100-107页

作者： XU Zhaoli li chunju Key and Open Laboratory of Marine and Estuary Fisheries of Ministry of Agriculture of China East China Sea Fisheries Research Institute Chinese Academy of Fisheries Sciences Shanghai 200090 China

On the basis of the census in four seasons from 1997 to 2000 in the East China Sea （23°30＇-33°N, 118°0＇-128°E）, the horizontal distribution of pteropods, the seasonal variations of their abundance and dynamic mechanisms of these variations were approached with quantitative and qualitative methods. Results showed that the total abundance of pteropods varied clearly with the seasons in an order of decrease of autumn （108×10-2 ind./m^3）, summer （33×10^-2 ind./m^3）, winter（28×10^-2 ind./m^3） and spring （10×10^-2 ind./m^3）. Pteropods were not observed in the north nearshore of the East China Sea （29°30＇-33°N, 122°30＇-125°E）in winter and spring. In all seasons, the peteropod abundance was higher in the south than that in the north and higher in the offshore than that in the nearshore. The major species influencing the peteropod abundance were Creseis acicula in spring, Creseis virgula in summer, Desmopterus papilio in autumn and limaeina trochiforrnis in winter. The variation of pteropod abundance showed a prominent linear correlation with the surface water temperature and 10 m water temperature, but no significant correlation with both the bottom water temperature and salinity. In summer, the high-abundance distribution area of pteropods was located in the place where the Taiwan Warm Current branched from the Kuroshio. Inautumn, thedistribution area with anabundance higher than 250×10^-2ind/m^3expanded northward along with the Taiwan Warm Current within the mixing area where the Changjiang freshwater, the Fujian-Zhejiang coastal water and the Huanghai Sea Cold Water met together. Water temperature and warm currents were the most important environmental factors that influenced the changes ofpteropod abundance in the East China Sea.

关键词： East China Sea ptcropods zooplankton abundance distribution regression contribution

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A Pillar[6]arene-[2]pseudorotaxane Based pH-Sensitive Molecular Switch

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Chinese Journal of Chemistry 2015年第3期33卷 343-345页

作者： Huanqing Chen Xueshun Jia chunju li Department of Chemistry Shanghai UniversityShanghai 200444China

A novel pH-responsive[2]pseudorotaxane based on ethylated pillar[6]arene and bis(1,2,3-triazolium)butane cation was *** dethreading and rethreading could be reversibly controlled by adding base and acid,i.e.,the deprotonation and reprotonation of the *** contrast,such responsible switching behavior does not occur for the complexation between the guest and ethylated pillar[5]arene,since both the cationic axle and the deprotonated one can be strongly bound by ethylated pillar[5]***,the bis(1,2,3-triazolium)butane⊂pillar[6]-arene-[2]pseudorotaxane can also disassemble upon the addition of competitive ethylated pillar[5]arene.

关键词： pillararene pseudorotaxane pH-sensitive molecular switch

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Complexation of linear Aliphatic Ester,Aldehyde and Ketone Guests by Per-ethylated Pillar[5]arene

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Chinese Journal of Chemistry 2015年第3期33卷 335-338页

作者： Xiaobing Lou Huanqing Chen Xueshun Jia chunju li Department of Chemistry Shanghai UniversityShanghai 200444China Department of Physics East China Normal UniversityShanghai 200062China

The complexation of four neutral guest molecules containing carbon-oxygen double bonds,i.e.,1,6-diacetoxy-hexane(1),dimethyl hexanedioate(2),hexanal(3),and 2-hexanone(4),by per-ethylated pillar[5]arene is *** guests show remarkably different binding *** example,ester 1 could be fully engulfed by the host cavity to form a[2]pseudorotaxane-type inclusion complex,while for 2,no obvious host-guest interaction was ob-served.

关键词： pillararene molecular recognition ester aldehyde ketone

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Prospering the biphen[n]arenes family by tailoring reaction modules

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Chinese Chemical Letters 2022年第5期33卷 2451-2454页

作者： Kaidi Xu Zhi-Yuan Zhang Zihao Zhou chunju li College of Science Center for Supramolecular Chemistry and CatalysisShanghai UniversityShanghai 200444China Tianjin Key Laboratory of Structure and Performance for Functional Molecules College of ChemistryTianjin Normal UniversityTianjin 300387China

Reported here is the comprehensive investigation on the formation of biphen[n]arenes by tailoring reac-tion *** new macrocyclic arenes and four oligomers were synthesized by the condensation of monomers possessing different multimethoxyphenyl reaction modules and *** proved that the number and sites of methoxy on reaction modules greatly affected the reaction activity,shape,and connection mode of ***,the triangular and saddle-shaped configuration of macro-cycles were revealed by single crystal *** results provided a typical and fundamental guidance in designing new macrocyclic arenes.

关键词： Biphen[n]arenes Macrocyclic arenes Synthetic receptors Supramolecular chemistry

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Benzothiadiazole-based water-soluble macrocycle:Synthesis,aggregation-induced emission and selective detection of spermine

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Chinese Chemical Letters 2024年第11期35卷 314-317页

作者： Shuo li Qianfa liu lijun Mao Xin Zhang chunju li Da Ma School of Pharmaceutical Engineering&Institute for Advanced Studies Taizhou UniversityTaizhou 318000China Tianjin Key Laboratory of Structure and Performance for Functional Molecules College of ChemistryTianjin Normal UniversityTianjin 300387China

Reported here is the synthesis of a new macrocycle bearing anionic carboxylate groups with water-soluble aggregation-induced emission(AIE).The water-soluble macrocycle without typical AIE luminogens is constructed based on the building block of *** exhibits a remarkable AIE *** watersoluble macrocycle can selectively bind different types of biogenic amines in aqueous media with the tightest binding towards *** fluorescence enhancement induced by supramolecular encapsulation is used to detect spermine.

关键词： Macrocycle Water-soluble Aggregation-induced emission Biogenic amines Host-guest interaction

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Carbon-carbon double bond in pillar[5]arene cavity:Selective binding of cis/trans-olefin isomers

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Chinese Chemical Letters 2020年第12期31卷 3230-3232页

作者： Xue Zhang Xiaoyang Wang Bin Wang Zhi-Jun Ding chunju li Key Laboratory of lnorganic-Organic Hybrid Functional Material Chemistry Ministry of EducationTianjin Key Laboratory of tructure and Performane forFunctional MoleculesCollege of ChemistryTianjin Norrmal UniversityTianjin 300387China Center for Supramolecular Chemistry and Catalysis and Department of Chemistry Sshanghai UniversitySshanghai 20044China Srare Key Laboratory of NBC Protecrion for Civilian Beijing 102205China

The binding behavior of pillar[5]arenes(P5 As)towards a series of olefin guests((E)-1,4-dichlo robut-2-ene(1 E),(Z)-1,4-dichlo robut-2-ene(1 Z),(E)-but-2-ene-1,4-diol(2 E),and(Z)-but-2-ene-1,4-diol(2 Z),as well as an alkyne derivative 1,4-dichlorobut-2-yne(3))have been studied in organic solution.P5 As exhibit considerable selectivities for the trans-olefin isomers(1 E and 2 E)over their cis-isomers(1 Z and 2 Z).The cis/trans-selective interactions hold the potential of utilizing P5 As to separate olefin isomers.

关键词： Pillararenes Molecular recognition Supramolecular chemistry Olefin Isomers

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Reversing neuromuscular blocking agent decamethonium by carboxylatopillar[6]arene based on host-guest encapsulation

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Chinese Chemical Letters 2022年第6期33卷 3003-3006页

作者： Yao Chai Longming Chen Yahan Zhang liang Zhao Zhao Meng Junyi Chen chunju li Qingbin Meng State Key Laboratory of Toxicology and Medical Countermeasures Beijing Institute of Pharmacology and ToxicologyBeijing 100850China Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry Ministry of EducationTianjin Key Laboratory of Structure and Performance for Functional MoleculesCollege of ChemistryTianjin Normal UniversityTianjin 300387China Key Laboratory of Natural Resources and Functional Molecules of the Changbai Mountain Affiliated Ministry of EducationCollege of PharmacyYanbian UniversityYanji 133002China

Neuromuscular blocking agents(NMBAs)are extensively used during anesthesia to improve surgical conditions by relaxing skeletal muscle *** neuromuscular recovery after surgery is desirable to facilitate the recovery of muscle function and prevent residual ***(C10)is a classic NMBA,which has been restricted over the past decades ascribed to lack of a suitable antidote in *** we used carboxylatopillar[6]arene(CP6A)to reverse neuromuscular blocker effect of C10 through direct host-guest *** and isothermal titration calorimetry served to confirm the complexation between CP6A and C10 with robust affinity[(1.07±0.14)×10^(7)L/mol].The CP6A was further used as a reversal agent of C10,which facilitated to decrease C10 concentration in mice blood and excrete via urinary clearance,resulting in rapid recovery from muscle *** favorable outcomes might lead us to suggest that this supramolecular strategy could allow patients to regain lucidity much faster than spontaneous recovery from anesthesia.

关键词： Host-guest encapsulation Decamethonium Neuromuscular blocking agents Supramolecular strategy Carboxylatopillararene

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Chemical warfare agent countermeasures based on macrocycle supramolecular chemistry

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Science China Chemistry 2024年

作者： Junyi Chen Yahan Zhang chunju li Qingbin Meng State Key Laboratory of National Security Specially Needed Medicines Beijing Institute of Pharmacology and Toxicology Tianjin Key Laboratory of Structure and Performance for Functional Molecules College of Chemistry Tianjin Normal University

Given that chemical warfare agents(CWAs) pose some of the largest threats to humankind, social stability, and world peace,considerable attention has been drawn to the development of the corresponding detection, decontamination, and treatment techniques. The versatile functionality and distinctive recognition potency of macrocycles enable their customized design for specific tasks, such as chemical sensing, catalysis, or separation. Hence, supramolecular materials are well suited for the establishment of CWA countermeasures. Herein, we summarize the recent progress in the development of macrocycle-based materials for counteracting several representative CWAs, including nerve, blister, blood, incapacitating, choking, and irritating agents, providing a foundation for further advances in this field and fostering practical translational terms.

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Luminescent terphen[3]arene sulfate-activated FRET assemblies for cell imaging

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Chinese Chemical Letters 2024年第9期35卷 183-186页

作者： Zhixue liu Haiqi Chen lijuan Guo Xinyao Sun Zhi-Yuan Zhang Junyi Chen Ming Dong chunju li Tianjin Key Laboratory of Structure and Performance for Functional Molecules College of ChemistryTianjin Normal UniversityTianjin 300387China

Multicharged supramolecular assemblies based on luminescent macrocycle play an important role in extending their optical properties and ***,we reported macrocyclic supramolecular assemblies based on luminescent terphen[3]arene sulfate(TP[3]AS)and tetraphenylethylene pyridinium(TPE-4Py)through electrostatic interactions,host-guest encapsulation andπ-πstacking interactions.F?rster resonance energy transfer(FRET)process from TP[3]AS to TPE-4Py was achieved with the energy transfer efficiency of 99.9%,accompanied by TPE-4Py fluorescence emission bathochromic shifted of 15 nm and enhanced by 1.68 times in PBS *** contrast,other non-luminescent sulfato-β-cyclodextrin and sulfobutylether-β-cyclodextrin only can enhance the fluorescence intensity of TPE-4Py without bathochromic *** to the strong fluorescence and good stability of TPE-4Py@TP[3]AS,it can be used for optical imaging in living cells,which provided an effective approach for the construction of assembling-confined luminescent biomaterials.

关键词： Luminescent macrocycle Terphenarene sulfate Multicharged assembly Multivalent interactions Forster resonance energy transfer Cell imaging

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