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Self-assembly behavior of disaccharide-containing supra-amphiphiles

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Chinese Chemical Letters 2023年第1期34卷 373-377页

作者： Zhenfei Gao Tiannan Wang Zikun Rao Hui Yan Ran Zhang guosong chen The State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science Fudan UniversityShanghai 200433China Changchun Institute of Applied Chemistry Chinese Academy of SciencesChangchun 130022China School of Pharmaceutical Sciences Liaocheng UniversityLiaocheng 252059China

In this paper,supra-amphiphilic compounds containing disaccharides and azobenzene ends have been constructed via dynamic covalent *** was found that the slight structural difference of the disaccharides made significant difference in the self-assembled ***,three kinds of azodisaccharide supra-amphiphiles were found to assemble into different morphologies,with the only difference in chemical structure from the *** importantly,the structural difference between the disaccharides,including lactoside,maltoside and cellobioside was *** simulation revealed the packing of molecules was due to the different contribution from hydrogen *** above results clearly indicated the contribution of saccharide packing,especially the related hydrogen bonding,to the final morphology of the assembled structures.

关键词： Supra-amphiphile Disaccharide Self-assembly Dynamic covalent bond Molecular dynamics simulation

Electrochemically sensitive supra-crosslink and its corresponding hydrogel

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Science China Chemistry 2012年第5期55卷 836-843页

作者： DU Ping chen guosong JIANG Ming State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular ScienceFudan UniversityShanghai200433China

In this work, through inclusion complexation between cyclodextrin (CD) host and ferrocene (Fc) guest, a monomer with double bond was incorporated to the surface of CdS quantum dot (QD). The obtained supra-structure could act as a supra-crosslink (Fc-SCL) in its copolymerizing with N,N-dimethylacrylamide (DMA) leading to a hybrid supramolecular hydrogel (Fc-Gel). Fc-SCL inherited satisfactory electrochemical activity from Fc. When the weight percentage of Fc-SCL in Fc-Gel was increased, an apparent increase of elastic modulus (G ′) was observed. Furthermore, Fc-Gel also exhibited good fluorescent properties. It was also demonstrated that the inclusion complexation of CD and Fc played a crucial role in constructing the hydrogel; therefore, this Fc-Gel was an organic-inorganic hybrid hydrogel induced by supramolecular interaction.

关键词：电化学活性水凝胶交联超分子相互作用敏感甲基丙烯酰胺重量百分比弹性模量

Non-covalent Sugar Modification and Self-assembly of Fluorous Gold Nanoparticles Driven by Fluorous Interaction

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Chinese Journal of Chemistry 2013年第5期31卷 695-700页

作者： Zhifang chen guosong chen State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science Fudan University Shanghai 200433 China

Fluorous gold nanoparticle （Fluo-NP）, i.e. gold nanoparticle covered by fluorous ponytail （C8F17-） was pre- pared and found to self-assemble into supra-structures covered by carbohydrates （named supraF-NP）, due to the strong fluorous interaction. More importantly, the re-dispersed supraF-NP （diameter around 200 nm） in water pro- vided an alternative strategy to detect carbohydrate-protein interaction in solution by naked eve.

关键词： fluorous interaction gold nanoparticle carbohydrate self-assembly

Telomere-to-telomere pear (Pyrus pyrifolia) reference genome reveals segmental and whole genome duplication driving genome evolution

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Horticulture Research 2023年第11期10卷 106-119页

作者： Manyi Sun chenjie Yao Qun Shu Yingyun He guosong chen Guangyan Yang Shaozhuo Xu Yueyuan Liu Zhaolong Xue Jun Wu College of Horticulture State Key Laboratory of Crop Genetics&Germplasm Enhancement and UtilizationNanjing Agricultural UniversityNanjingJiangsu 210095China Zhongshan Biological Breeding Laboratory No.50 Zhongling StreetNanjingJiangsu 210014China Institute of Horticulture Yunnan Academy of Agricultural SciencesKunming 650205China

Previously released pear genomes contain a plethora of gaps and unanchored genetic ***,we report a telomere-to-telomere(T2T)gap-free genome for the red-skinned pear,‘Yunhong No.1’(YH1;Pyrus pyrifolia),which is mainly cultivated in Yunnan Province(southwest China),the pear’s primary region of *** YH1 genome is 501.20 Mb long with a contig N50 length of 29.26 *** 17 chromosomes were assembled to the T2T level with 34 characterized *** 17 centromeres were predicted and mainly consist of centromeric-specific monomers(CEN198)and long terminal repeat(LTR)Gypsy elements(≥74.73%).By filling all unclosed gaps,the integrity of YH1 is markedly improved over previous *** genomes(‘Cuiguan’and‘Nijisseiki’).A total of 1531 segmental duplication(SD)driven duplicated genes were identified and enriched in stress response *** SDs drove the expansion of disease resistance genes,suggesting the potential of SDs in adaptive pear evolution.A large proportion of duplicated gene pairs exhibit dosage effects or sub-/neo-functionalization,whichmay affect agronomic traits like stone cell content,sugar content,and fruit skin ***,as core regulators of anthocyanin biosynthesis,we found that MYB10 and MYB114 underwent various gene duplication *** copies of MYB10 and MYB114 displayed obvious dosage effects,indicating role differentiation in the formation of red-skinned pear *** summary,the T2T gap-free pear genome provides invaluable resources for genome evolution and functional genomics.

关键词： dosage evolution driving

Well-controlled 2D squares from conjugated block copolymers

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Science China Chemistry 2018年第11期61卷 1345-1346页

作者： Pan Zhang guosong chen Department of Macromolecular Sciences Fudan University

Nanoscale two-dimensional (2D) polymer-based platelet structures are of considerable interest for a range of applications [1]. In principle, solution self-assembly of block copolymers (BCPs) provides a convenient route to analogous planar nanostructures derived from soft matter [2]. However,the formation of 2D platelet micelles is generally uncommon relative to other morphologies. In literature, this type of materials is always prepared by crystallization-driven selfassembly or some other crystalline-related methods, while non-crystallization approach is quite rare [3].

关键词：共聚物控制 2D 广场应用程序板结构聚合物软物质

Modification of polyfluorene nanoparticles via inclusion complexa- tion based on cyclodextrin for lectin sensing and cell imaging

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Science China Chemistry 2016年第12期59卷 1616-1620页

作者： PengfeiSun Mingchang Lin guosong chen Ming Jiang Key Laboratory for Organic Electronics and Information Displays&Institute of Advanced Materials(IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials(SICAM)Nanjing University of Posts&TelecommunicationsNanjing 210023China State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular ScienceFudan UniversityShanghai 200433China

Currently, conjugated polymer nanoparticles are widely used with many biological applications, especially bio-imaging and labeling. Thus their modification with different biomacromolecules becomes a crucial step before various applications. In literature,this modification was normally performed via covalent bonds. To our best knowledge, modification based on inclusion complexation has not been reported. Herein, via host-guest interaction between cyclodextrin and adamantane, supramolecular modification to conjugated polyfluorene nanoparticles has been successfully achieved. The glycopolymer-modified conjugated polymer nanoparticles showed excellent binding ability to lectins, such as Galectin-3 and selective imaging behavior to Hep G2 cells.

关键词：包括 complexation 结合的聚合物 nanoparticles polyfluorene glycopolymer Galectin-3

The glyco-regioisomerism effect on dynamic interactions between glycopolymers with galactose pendants and benzoxaborole-containing polymer

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Science China Chemistry 2018年第1期61卷 71-75页

作者： Pengfei Sun Sichao Tian Mingchang Lin guosong chen Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials Jiangsu National Synergetic Innovation Center for Advanced Materials Nanjing University of Posts & Telecommunications The State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science Fudan University

This work investigated the effect of glyco-regioisomerism of glycopolymers on their dynamic interaction with benzoxaborole-containing polymers. Two kinds of glycopolymers, P-1-Gal and P-6-Gal, i.e. galactoside pendant group linked to the identical main chain through its anomeric(C1) and C6-hydroxyl group position, respectively, were studied. We found that P-6-Gal showed stronger binding strength to the PNIPAM-co-PBOB polymer than P-1-Gal did, which controlled the macroscopic property of the resultant hydrogels at a molecular level.

关键词： glyco-regioisomerism benzoxaborole glycopolymers hydrogel glucose

The effect of monosaccharides on self-assembly of benzenetricarboxamides

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Chinese Chemical Letters 2019年第3期30卷 587-591页

作者： Jue Wang Wenjing Qi guosong chen The State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science Fudan University

The interaction between monosaccharides exhibits an important role in the assembly of monosaccharide-containing molecules. In this work, three common monosaccharides, glucose, galactose and mannose, are employed to investigate the effect of monosaccharide on the self-assembly of benzenetricarboxamide(BTA) core-containing molecules. In the presence of monosaccharides, three benzenetricarboxamide derivatives aggregate into different ordered structures. When alanine linkers are introduced to these molecules between the core and the monosacchride, morphologies of three types of monosaccharide BTAs turned to disordered, meanwhile their structures become similar with the increase of the length of alanine linkers, indicating the disappearance of the monosaccharide effects.

关键词： Monosaccharide Self-assembly Benzenetricarboxamide Dynamic light scatting (DLS) Depolarized dynamic light scatting (DDLS)

Polymorphism of Kdo-Based Glycolipids:The Elaborately Determined Stable and Dynamic Bicelles

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CCS Chemistry 2022年第7期4卷 2228-2238页

作者： Yingle Feng Long Li Qiqige Du Lu Gou Lei Zhang Yonghai Chai Ran Zhang Tongfei Shi guosong chen The State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular ScienceFudan UniversityShanghai 200433 Key Laboratory of Applied Surface and Colloid Chemistry Ministry of EducationSchool of Chemistry and Chemical EngineeringShaanxi Normal UniversityXi’anShaanxi 710119 MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter School of ScienceXi’an Jiaotong UniversityXi’an 710049 Changchun Institute of Applied Chemistry Chinese Academy of SciencesChangchun 130022 Multiscale Research Institute of Complex Systems Fudan UniversityShanghai 200433

Understanding how the diversity of glycolipids,including how their chemical structures and composition affect their biological functions,is a remarkable fundamental *** this work,we employed a rare monosaccharide,3-deoxy-Dmanno-2-octulosonic acid(Kdo)to build a simple and biomimetic model to understand the diversity of glycolipids from the viewpoint of supramolecular *** was chosen not only because its unusual 8-carbon acidic carbohydrate backbone is very different from common hexoses,but also because of its key structural role in lipopolysaccharides and prevalence in bacteria,plant life,and *** was found that although both of the two Kdo-lipids S-Kdo and Kdo-S derived from the same carbohydrate backbone and gave bicelles as their self-assembled morphology,experimental results revealed that the self-assembly showed pathway *** is the thermodynamic product of S-Kdo,while for Kdo-S,the bicelle is only a kinetically trapped state,which finally transforms to a *** simulation clearly revealed the different packing of Kdo-lipids in the bicelles with different contribution from hydrogen bonds and electrostatic interactions.

关键词： glycolipid Kdo self-assembly bicelles