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Preparation of Photo-responsive DNA Supramolecular Hydrogels and Their Application as UV Radiometers

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Chemical Research in Chinese Universities 2023年第1期39卷 115-120页

作者： DING Yuqiao LI Yujie YANG Bo PAN Yufan CHENG Jiafeng MENG Siwen LIU dongsheng XU Lijin dong yuanchen Department of Chemistry Renmin University of ChinaBeijing100872P.R.China Engineering Research Center of Advanced Rare Earth Materials Ministry of EducationDepartment of ChemistryTsinghua UniversityBeijing100084P.R.China CAS Key Laboratory of Colloid Interface and Chemical ThermodynamicsBeijing National Laboratory for Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing100190P.R.China University of Chinese Academy of Sciences Beijing100049P.R.China

Ultraviolet light(UV)is an essential component of ambient light,but high dose UV would damage genome *** semiconductors and soft materials have been employed to detect the UV,the complex process and the instrumental requirement have limited the application in daily *** this study,taking advantage of sequence designability,a series of hydrogels with different gel-sol transition rates was constructed under the same UV intensity by introducing competing hybridization to tune the stability of the molecular *** estimating the transition time between each system under UV light irradiation,the intensity of UV could be roughly estimated,which provided a convenient method for the visual detection of UV.

关键词： Photo-responsive DNA hydrogel Azobenzene Gel-sol transition UV detection

Reinforcing DNA Supramolecular Hydrogel with Polymeric Multiple-Unit Linker

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CCS Chemistry 2023年第2期5卷 434-444页

作者： Yujie Li Yuqiao Ding Bo Yang Tianyang Cao Jiangfei Xu yuanchen dong Quan Chen Lijin Xu dongsheng Liu Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology Department of ChemistryTsinghua UniversityBeijing 100084 Department of Chemistry Renmin University of ChinaBeijing 100872 Key Laboratory of Organic Optoelectronics and Molecular Engineering Department of ChemistryTsinghua UniversityBeijing 100084 CAS Key Laboratory of Colloid Interface and Chemical ThermodynamicsBeijing National Laboratory for Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing 100190 State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022

While supramolecular hydrogels have received growing interest due to their unique dynamic features,their relatively weak mechanical properties have largely limited their biomedical *** this study,we propose and demonstrate a strategy to reinforce the mechanical properties of supramolecular hydrogel by introducing polymeric multiple-unit linker(PMUL),which incorporates multiple supramolecular units into a polymeric backbone to crosslink supramolecular *** demonstrated that PMUL can effectively improve the kinetic stability of supramolecular crosslinkers through multiple-unit interaction in a DNA supramolecular hydrogel model system,thus leading to higher mechanical ***,the dynamic features of the supramolecular hydrogels have been well preserved,including shear-thinning,self-healing properties,and reversible thermal *** strategy offers a simple but effective way for mechanical reinforcement of supramolecular hydrogels to construct novel biomaterials.

关键词： mechanical reinforcement supramolecular hydrogels DNA polymericmultiple-unit linkers thermorheological behavior

Beyond displays: The recent progress of liquid crystals for bio/chemical detections

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Chinese Science Bulletin 2013年第21期58卷 2557-2562页

作者： dong yuanchen YANG ZhongQiang Key Laboratory of Organic Optoelectronics & Molecular Engineering of the Ministry of Education Department of Chemistry Tsinghua University

Liquid crystals (LCs) are often known as electronic displays and have become ubiquitous in our daily life, apart from that, in the past 10 years, LCs have been investigated as exquisitely sensitive reporters for developing new molecular sensing and detection tools. The unique and primary advantage of this class of intriguing materials is the perturbation of the local ordering LCs at mo-lecular scale by bio/chemical species can be communicated within LC molecules and extended over microns, allowing the observation of the optical signals by microscope or even the naked eye. Therefore, it provides a new platform for developing bio/chemical detection and potentially label-free sensing systems.

关键词：液晶分子化学检测生物显示器分子尺度传感系统电子显示屏 LCS

Construction of pH-Triggered DNA Hydrogels Based on Hybridization Chain Reactions

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Chemical Research in Chinese Universities 2020年第2期36卷 243-246页

作者： LI Yujie CHEN Jie dong yuanchen LIU Huajie LIU dongsheng Key Laboratory of Organic Optoelectronics&Molecular Engineering Ministry of EducationDepartment of ChemistryTsinghua UniversityBeijing 100084P.R.China School of Chemical Science and Engineering Shanghai Research Institute for Intelligent Autonomous SystemsKey Laboratory of Advanced Civil Engineering MaterialsMinistry of EducationTongji UniversityShanghai 200092P.R.China Division of Physical Biology CAS Key Laboratory of Interfacial Physics and TechnologyShanghai Institute of Applied PhysicsChinese Academy of SciencesShanghai 201800P.R.China CAS Key Laboratory of Colloid Interface and Chemical ThermodynamicsInstitute of ChemistryChinese Academy of SciencesBeijing 100190P.R.China

As a novel type of bio-functional material,DNA hydrogels have attracted more and more attention due to their successful applications in 3D cell culturing and tissue engineering for the designable and programmable ***,we have developed a pH-triggered DNA hydrogel based on a clamped hybridization chain reaction(C-HCR).In this system,a DNA switch was designed,which can release the initiator strand in a controllable way via the formation of the C-G-C4 triplex under the pH *** the pre-gelation solution is stable in neutral environment,the C-HCR will trigger the sol-gel transition as the pH decreased to *** strategy has endowed the DNA hydrogel with good controllability for triggering,which also shows potential in intellectual responsiveness to certain stimuli.

关键词： DNA hydrogel pH-Triggered Hybridization chain reaction Sol-gel phase transition

DNA-organic molecular amphiphiles:Synthesis,self-assembly,and hierarchical aggregates

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Aggregate

Aggregate 2021年第4期2卷 43-56页

作者： Zhiyong Zhao yuanchen dong Zongze Duan Dou Jin Wei Yuan dongsheng Liu Key Laboratory of Coal Conversion and New Carbon Material of Hubei Province School of Chemistry and Chemical EngineeringWuhan University of Science and TechnologyWuhanHubeiPR China CAS Key Laboratory of Colloid Interface and Chemical ThermodynamicsBeijing National Laboratory for Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijingPR China Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology Department of ChemistryTsinghua UniversityBeijingPR China

With the development of deoxyribonucleic acid(DNA)nanotechnology,various DNA nanostructures and DNA devices have been constructed,which exhibit potential applications in material science and *** advantage of the programmability and biocompatibility of DNA,novel building block to chemically functionalize DNA with hydrophobic organic molecules has attracted more and more *** by amphiphilicity,DNA-organic molecular amphiphiles have been demonstrated to self-assemble or further induce hierarchically assemblies,providing novel-specific *** this minireview,we summarize the recent progress of DNA organic molecular amphiphiles including their synthesis,self-assembly behavior in aqueous solution,and the amphiphilic self-assembly based on hierarchical DNA *** further briefly discuss the perspective of the application of the DNA-organic molecular amphiphiles.

关键词： DNA-organic molecular amphiphiles hierarchical nanostructures morphology control self-assembly synthesis

Concentration Insensitive Supramolecular Polymerization Enabled by Kinetically Interlocking Multiple-Units Strategy

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CCS Chemistry 2019年第3期1卷 296-303页

作者： Jiezhong Shi Haoyang Jia Hao Chen Xi Wang Jiang-Fei Xu Weibin Ren Jiang Zhao Xin Zhou yuanchen dong dongsheng Liu Key Laboratory of Organic Optoelectronics&Molecular Engineering of the Ministry of Education Department of ChemistryTsinghua UniversityBeijing 100084China School of Physical Sciences University of Chinese Academy of ScienceBeijing 100049China Institute of Chemistry Chinese Academy of SciencesBeijing 100190China

We proposed and demonstrated a kinetically interlocking multiple-units supramolecular polymer-ization *** rationally designed multi-ple-units monomers,the degree of polymerization(X w)detected was more than 50 with a ... 详细信息

关键词： DNA supramolecular polymerization kinetically interlocking multiple units concentration insensitive

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造价审计角度下的工程现场签证管理研究解析

工程经济 2014年第10期24卷 3-6页

作者：董元晨黄山旅游发展股份有限公司安徽黄山245000

企业对工程合同价款进行调整工作的主要依据是工程现场签证管理。本文主要从造价审计角度上解析目前我国大多数企业现场工程签证管理过程中存在的相关问题,并提出针对性措施搞好我国工程企业的签证审计。

关键词：工程现场签证管理造价审计角度研究解析

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从造价审计看工程现场签证管理办法研究

工程经济 2014年第12期24卷 10-12页

作者：董元晨黄山旅游发展股份有限公司财务管理中心工程审计部安徽黄山242700

在工程项目建设过程中,工程签证是不可缺少的组成部分,同时也是工程结算的重要依据。签证管理工作涉及的内容比较多,本文从工程审计的角度出发,对工程签证的相关内容进行分析,并在此基础上,提出具有可行性的工程签证管理办法。

关键词：工程签证审计管理办法

DNA Modified Liquid Crystal Droplets

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DNA Modified Liquid Crystal Droplets