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1. Effects of Electrolytes on Thermodynamics and Structure of Oligo(ethylene oxide)/Salt Solutions and Liquid–Liquid Equilibria of a Squalane/Tetraethylene Glycol Dimethyl Ether Blend

   https://doi.org/10.1021/acs.macromol.0c02270  

   Shen, Zhengyuan ; Chen, Qile P. ; Xie, Shuyi ; Lodge, Timothy P. ; Siepmann, J. Ilja ( February 2021 , Macromolecules)

   null (Ed.)
2. Effect of Added Salt on Disordered Poly(ethylene oxide)- Block -Poly(methyl methacrylate) Copolymer Electrolytes

   https://doi.org/10.1021/acs.macromol.0c02493  

   Shah, Neel J. ; Dadashi-Silab, Sajjad ; Galluzzo, Michael D. ; Chakraborty, Saheli ; Loo, Whitney S. ; Matyjaszewski, Krzysztof ; Balsara, Nitash P. ( February 2021 , Macromolecules)

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3. Balancing Charge Storage and Mobility in an Oligo(Ether) Functionalized Dioxythiophene Copolymer for Organic‐ and Aqueous‐ Based Electrochemical Devices and Transistors

   https://doi.org/10.1002/adma.201804647  

   Savagian, Lisa R. ; Österholm, Anna M. ; Ponder, Jr., James F. ; Barth, Katrina J. ; Rivnay, Jonathan ; Reynolds, John R. ( October 2018 , Advanced Materials)

   This work presents a soluble oligo(ether)‐functionalized propylenedioxythiophene (ProDOT)‐based copolymer as a versatile platform for a range of high‐performance electrochemical devices, including organic electrochemical transistors (OECTs), electrochromic displays, and energy‐storage devices. This polymer exhibits dual electroactivity in both aqueous and organic electrolyte systems, redox stability for thousands of redox cycles, and charge‐storage capacity exceeding 80 F g⁻¹. As an electrochrome, this material undergoes full colored‐to‐colorless optical transitions on rapid time scales (<2 s) and impressive electrochromic contrast (Δ%T> 70%). Incorporation of the polymer into OECTs yields accumulation‐mode devices with anI_ON/OFFcurrent ratio of 10⁵, high transconductance without post‐treatments, as well as competitive hole mobility and volumetric capacitance, making it an attractive candidate for biosensing applications. In addition to being the first ProDOT‐based OECT active material reported to date, this is also the first reported OECT material synthesized via direct(hetero)arylation polymerization, which is a highly favorable polymerization method when compared to commonly used Stille cross‐coupling. This work provides a demonstration of how a single ProDOT‐based polymer, prepared using benign polymerization chemistry and functionalized with highly polar side chains, can be used to access a range of highly desirable properties and performance metrics relevant to electrochemical, optical, and bioelectronic applications.

    

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4. n ‐Type Rigid Semiconducting Polymers Bearing Oligo(Ethylene Glycol) Side Chains for High‐Performance Organic Electrochemical Transistors

   https://doi.org/10.1002/anie.202013998  

   Chen, Xingxing ; Marks, Adam ; Paulsen, Bryan D. ; Wu, Ruiheng ; Rashid, Reem B. ; Chen, Hu ; Alsufyani, Maryam ; Rivnay, Jonathan ; McCulloch, Iain ( April 2021 , Angewandte Chemie International Edition)

   null (Ed.)
5. Open-air synthesis of oligo(ethylene glycol)-functionalized polypeptides from non-purified N -carboxyanhydrides

   https://doi.org/10.1039/d1bm00223f  

   Tan, Zhengzhong ; Song, Ziyuan ; Xue, Tianrui ; Zheng, Lining ; Jiang, Lei ; Jiang, Yunjiang ; Fu, Zihuan ; Nguyen, Anh ; Leal, Cecilia ; Cheng, Jianjun ( January 2021 , Biomaterials Science)

   null (Ed.)

   With PEG-like properties, such as hydrophilicity and stealth effect against protein absorption, oligo(ethylene glycol) (OEG)-functionalized polypeptides have emerged as a new class of biomaterials alternative to PEG with polypeptide-like properties. Synthesis of this class of materials, however, has been demonstrated very challenging, as the synthesis and purification of OEG-functionalized N -carboxyanhydrides (OEG-NCAs) in high purity, which is critical for the success in polymerization, is tedious and often results in low yield. OEG-functionalized polypeptides are therefore only accessible to a few limited labs with expertise in this specialized NCA chemistry and materials. Here, we report the controlled synthesis of OEG-functionalized polypeptides in high yield directly from the OEG-functionalized amino acids via easy and reproducible polymerization of non-purified OEG-NCAs. The prepared amphiphilic block copolypeptides can self-assemble into narrowly dispersed nanoparticles in water, which show properties suitable for drug delivery applications. 

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