Ancillary Ligand Lability Improves Control in Cyclic Ruthenium Benzylidene Initiated Ring-Expansion Metathesis Polymerizations [0.03%]
辅助配体的不稳定性可提高环钌苯甲亚胺引发的开环复分解聚合反应的可控性
Adelaide M Levenson,Christine M Morrison,Pin-Ruei Huang et al.
Adelaide M Levenson et al.
The synthesis of well-defined cyclic polymers is crucial to exploring applications spanning engineering, energy, and biomedicine. These materials lack chain-ends and are therefore imbued with unique bulk properties. Despite recent advanceme...
Fluorophore-Tagged Poly-Lysine RAFT Agents: Controlled Synthesis of Trackable Cell-Penetrating Peptide-Polymers [0.03%]
带有荧光标记的聚赖氨酸RAFT剂：可跟踪穿膜肽聚合物的可控合成
Paige A Shaw,Maxime Klausen,Annamaria Lilienkampf et al.
Paige A Shaw et al.
The conjugation of a fluorophore and a variety of cell-penetrating peptides onto a RAFT agent allowed for the synthesis of polymers of defined sizes with quantifiable cell-uptake. Each peptide-RAFT agent was used to polymerize acrylamide, a...
In Situ Monitoring of Block Copolymer Self-Assembly via Solvent Exchange through Controlled Dialysis with Light and Neutron Scattering Detection [0.03%]
基于控释渗析的嵌段共聚物自组装原位监测及其光子与中子散射检测技术
Martin Fauquignon,Lionel Porcar,Annie Brûlet et al.
Martin Fauquignon et al.
Solution self-assembly of amphiphilic block copolymers (BCs) is typically performed by a solvent-to-water exchange. However, BC assemblies are often trapped in metastable states depending on the mixing conditions such as the magnitude and r...
Systematic Order-Made Synthesis of Sequence-Defined Polyurethanes with Length, Types, and Topologies [0.03%]
长度、类型和拓扑结构可调的序列定义型聚氨酯的系统定制合成法
Haruka Yamauchi,Syunya Inayama,Mahiro Nakabayashi et al.
Haruka Yamauchi et al.
Polyurethanes are industrially and academically important as soft materials. They are conventionally synthesized by a process based on step-growth polymerization; thus, molecular weight and structural control are impossible. However, the de...
Nico Alleva,Katharina Eigen,David Y W Ng et al.
Nico Alleva et al.
We present a facile and adaptable method to purify and isolate DNA-polymer conjugates from different uncharged homo, random, or block copolymer families. Anion exchange chromatography is used to separate the reaction solution and retrieve t...
Bond Orientation-Determined Enthalpic Stress in Polymer Glasses upon Deformation [0.03%]
聚合物玻璃在变形过程中由键取向决定的焓应力
Tingyu Xu,Kunpeng Cui,Cui Nie et al.
Tingyu Xu et al.
The mechanical properties of polymer glass are determined by both intermolecular local packing structures and aligned intrachain configurations. These configurations involve multiple space scales, and the underlying mechanism is not well un...
Ion Solvation Cage Structure in Polymer Electrolytes Determined by Combining X-ray Scattering and Simulations [0.03%]
基于散射和模拟结合确定的聚合物电解质中的离子溶剂化结构
Chao Fang,Saheli Chakraborty,Yunhao Li et al.
Chao Fang et al.
Solvation structure plays a crucial role in determining ion transport in electrolytes. We combine wide-angle X-ray scattering (WAXS) and molecular dynamics (MD) simulation to identify the solvation cage structure in two polymer electrolytes...
Simple and Efficient Hydrogen Bond-Assisted Unit Exchange for Constructing Highly Soluble Covalent Organic Frameworks [0.03%]
一种简单高效的氢键辅助单元交换构建高溶解性的共价有机框架的方法
Yingdi Zou,Yue Qi,Xiaofeng Li et al.
Yingdi Zou et al.
The majority of COFs synthesized using current methods exist as insoluble powders, which is unfavorable for processing and molding and greatly limits their practical applications. The syntheses of solution-processable or soluble COFs are ch...
Zahra Ahmadian Dehaghani,Pietro Chiarantoni,Cristian Micheletti
Zahra Ahmadian Dehaghani
We used molecular dynamics simulations to investigate the self-entanglements of the collapsed linear catenanes. We found two different types of topologically complex states. First, we observed numerous long-lived knotting events of the cate...
Inverse Miniemulsion Enables the Continuous-Flow Synthesis of Controlled Ultra-High Molecular Weight Polymers [0.03%]
反向微型乳液在超高分子量聚合物连续流合成中的应用
Cullen L G Davidson th,Megan E Lott,Lucca Trachsel et al.
Cullen L G Davidson th et al.
We report the controlled synthesis of ultra-high molecular weight (UHMW) polymers (Mn ≥ 106 g/mol) via continuous flow in a tubular reactor. At high monomer conversion, UHMW polymers in homogeneous batch polymerization exhibit high viscosi...