Article
Chemistry, Multidisciplinary
Qilei Song, Hong Qiu, Lijun Liu, Guangzhao Zhang, Frederic Peruch, Stephane Carlotti, Junpeng Zhao
Summary: One-step sequence-selective block copolymerization requires strict catalytic control of monomer activity and enchainment order, especially for A(n)B(m)-type block copolymers from simple binary monomer mixtures. In this study, ethylene oxide (EO) and N-sulfonyl aziridine (Az) form a valid pair with a bicomponent metal-free catalyst. The optimal Lewis acid/base ratio allows the two monomers to block-copolymerize strictly in a reverse order (EO-first) compared to the conventional anionic route (Az-first). The livingness of the copolymerization enables the one-pot synthesis of multiblock copolymers by adding mixed monomers in batches. Calculation results suggest that the Janus effect of Lewis acid on the two monomers is crucial for enlarging the activity difference and reversing the enchainment order.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Polymer Science
Farhad Jamali, Davood Hassanian-Moghaddam, Saeid Ahmadjo, Seyed Mohammad Mahdi Mortazavi, Yasaman Maddah, Mostafa Ahmadi
Summary: In this study, we successfully synthesized PE-PCL block copolymers containing both polar and non-polar segments through a two-step polymerization process. The block copolymers exhibit diverse crystal structures and phase separation between the PE and PCL segments. Additionally, the block copolymers act as compatibilizers in the blends. Rheology results show a high order-disorder transition temperature for the block copolymers.
EUROPEAN POLYMER JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Huan Qiu, Ting Shen, Zhening Yang, Feng Wu, Xiaohong Li, Yingfeng Tu, Jun Ling
Summary: Janus polymerization was utilized to synthesize multiblock copolymers with self-assembly capabilities, good shape memory properties, and potential applications in biomedical devices. The distinguishable chemical structures and thermal properties between Janus MBCPs and cationic random copolymers were confirmed, providing insights into the unique features of Janus polymerization for advanced material design and applications.
CHINESE JOURNAL OF CHEMISTRY
(2022)
Article
Polymer Science
Wenhao Xiao, Hongli Xu, Jie Zhang, Yang Chen, Zhixian Dong, Anfu Chen, Jinbao Xu, Caihong Lei
Summary: This study successfully achieved the one-shot orthogonal preparation of heterografted brush copolymers, avoiding tedious purification processes, and expanded the application range by preparing brush copolymers with various grafting contents. Self-assembling amphiphilic brush copolymers were also successfully prepared, allowing for the formation of micelles in water.
EUROPEAN POLYMER JOURNAL
(2021)
Article
Polymer Science
Hongyuan Bai, Li Han, Xuefei Wang, Hong Yan, Siwen Chen, Haitao Leng, Zijing Yao, Hongwei Ma
Summary: The sequence distribution of CPVB and t-St units in anionic polymerization can be controlled by adjusting the reaction temperature, allowing the synthesis of multiblock copolymers with precise compositions and chain lengths. The resulting polymers undergo cationic cyclization to exhibit unique fluorescence properties and thermal resistance.
Article
Chemistry, Multidisciplinary
Marvin Langlais, Nicolas Baulu, Severin Dronet, Charlotte Dire, Francois Jean-Baptiste-dit-Dominique, David Albertini, Franck D'Agosto, Damien Montarnal, Christophe Boisson
Summary: Block copolymers based on polyethylene (PE) and ethylene butadiene rubber (EBR) were synthesized using successive controlled coordinative chain transfer polymerization (CCTP). By employing a complex of {Me2Si(C13H8)(2)Nd(BH4)(2)Li(THF)}2 and n-butyl, n-octyl magnesium (BOMAG) as the alkylating and chain transfer agent (CTA), EBR-b-PE diblock copolymers were obtained. Furthermore, triblock and multiblock copolymers featuring highly semi-crystalline PE hard segments and soft EBR segments were synthesized with the development of a bimetallic CTA, pentanediyl-1,5-di(magnesium bromide) (PDMB). These new block copolymers form lamellar structures through crystallization-driven organization and exhibit various mechanical properties, including excellent extensibility and elastic recovery for triblock and multiblock copolymers.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Ze Zhang, Yu Xiong, Peng Yang, Yang Li, Rui Tang, Xuan Nie, Guang Chen, Long-Hai Wang, Chun-Yan Hong, Ye-Zi You
Summary: Introduces a thioester-relayed in-chain cascade copolymerization strategy for the preparation of multiblock copolymers with on-demand blocks. The strategy involves building thioester groups in the polymer backbone and using them as initiating centers to trigger the polymerization of episulfides for extending the polymer backbone into multiblock structures. The composition, number of blocks, and block degree of polymerization can be easily regulated.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Chinh-Hoang Tran, Min-Woong Lee, Sang-Woo Park, Jae-Eon Jeong, Soo-Jeong Lee, Wenliang Song, PilHo Huh, Il Kim
Summary: A series of polycaprolactones (PCLs) with different molecular weights and properties have been synthesized via one-pot, solvent-free ring-opening polymerization using a heterogeneous double metal cyanide (DMC) catalyst. The studies also included the synthesis of branched PCLs copolymers and the successful use of these alpha,omega-hydroxyl functionalized PCLs as telechelic polymers to produce thermoplastic elastomers.
Article
Polymer Science
Feng Ren, Zhuang-Zhuang Liang, Ming-Xin Niu, Chen-Yang Hu, Xuan Pang
Summary: This study successfully synthesized a series of poly(ester-alt-ether) with perfectly alternating glycolic acid and propylene glycol repeat units, which combines the advantages of polyester and polyether. These polymers have a significantly lower glass-transition temperature than poly(glycolic acid) (PGA) and can be chemically recovered to monomer, establishing a closed-loop life cycle.
CHINESE JOURNAL OF POLYMER SCIENCE
(2023)
Article
Materials Science, Composites
John M. Misasi, Buu N. Dao, Carmelo Dell 'Olio, Sam R. Swan, Salumeh Issadazeh, Jeffrey S. Wiggins, Russell J. Varley
Summary: This study investigates the synthesis and characterisation of macrocyclic oligomers (MCO) from 4, 4'-difluoro benzophenone and catechol, their ring opening polymerisation, fabrication into carbon fibre reinforced composite materials, and depolymerisation. The results provide important guidance on the future development of high performance thermoplastic composites through in-situ polymerisation, showcasing the reversible nature of the chemistry with MCO.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Analytical
Tugba Celiker, Faezeh Ghorbanizamani, Hichem Moulahoum, Emine Guler Celik, Kerem Tok, Figen Zihnioglu, Candan Cicek, Ruchan Sertoz, Bilgin Arda, Tuncay Goksel, Kutsal Turhan, Suna Timur, Yusuf Yagci
Summary: A rapid and easy immunofluorescence bioassay for SARS-CoV-2 detection was developed using a one-pot synthetic approach for the production of a graft fluorescent copolymer PPy-g-PCL. The assay showed a detection range of 6.03-8.7 LOG viral copy mL(-1) and a high correlation with RT-PCR data. This study provides new insights for simplified synthesis procedures of reporter molecules and their potential applications in sensing and diagnosis.
Article
Chemistry, Physical
Alex J. Commisso, Gopal R. Sama, Timothy F. Scott
Summary: Conventional approaches to SLA use liquid resin formulations that can cross-link upon polymerization. However, using resins that yield semicrystalline thermoplastics allows for the attainment of high toughness and resistance to solvent swelling. In this study, semicrystalline thermoplastics were 3D printed using radical-mediated ring-opening photopolymerization. The printed copolymers showed strong interlayer adhesion and the potential for improved sustainability through recycling.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Wenqi Wang, Zefeng Zhou, Devavrat Sathe, Xuanting Tang, Stephanie Moran, Jing Jin, Fredrik Haeffner, Junpeng Wang, Jia Niu
Summary: This study presents a photocatalytic approach to generate degradable vinyl random copolymers with even distribution of labile functional groups in the polymer backbone. Reversible inhibition of chain propagation by in situ generated sulfur dioxide was overcome by reducing its solubility. The resulting degradable vinyl copolymers exhibited comparable material properties to non-degradable vinyl polymers.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Polymer Science
Ghasem Oskueyan, Yadollah Bayat, Masoud Mostafavi, Tayebe Khanlari
Summary: A triblock copolymer of polypropylene glycol-polytetrahydrofuran-polypropylene glycol (TPPG) with a molecular weight of 2330 g mol(-1) was synthesized using polytetrahydrofuran as a macroinitiator via ring-opening polymerization of propylene oxide. The characterization of the product was done using H-1 and C-13-NMR spectroscopy, FT-IR, and gel permeation chromatography (GPC). The thermal behavior of the copolymer was investigated by differential scanning calorimetry (DSC). Optimum synthesis conditions were determined with BF3 center dot OEt2 as a catalyst, dichloromethane as a solvent, reaction time of 20 h, and temperature range of 0-5 degrees C. Copolyurethane elastomers were prepared using different NCO/OH ratios and showed excellent mechanical properties.
Article
Chemistry, Physical
Bin Wang, Wenling Guo, Tian Li, Rongmin Wang, Pengfei Song, Yufeng He, Xiaoqi Cheng
Summary: This study successfully synthesized antibacterial Janus copolymers with dual-active hydrophilic and hydrophobic properties, and obtained antibacterial sheets with higher antibacterial activity by controlling reaction conditions and formulation ratios, which have promising applications in biomedicine and environmental science.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Multidisciplinary
Huan Qiu, Ting Shen, Zhening Yang, Feng Wu, Xiaohong Li, Yingfeng Tu, Jun Ling
Summary: Janus polymerization was utilized to synthesize multiblock copolymers with self-assembly capabilities, good shape memory properties, and potential applications in biomedical devices. The distinguishable chemical structures and thermal properties between Janus MBCPs and cationic random copolymers were confirmed, providing insights into the unique features of Janus polymerization for advanced material design and applications.
CHINESE JOURNAL OF CHEMISTRY
(2022)
Article
Polymer Science
Siqi Wang, Wanli Chen, Jun Ling
Summary: A random copolymer PiPo was synthesized by copolymerizing N-phenyloxycarbonyl-C-substituted glycine monomers with N-phenyloxycarbonyl-N-substituted glycine monomers. The solubility of PiPo depends on the compositions of the peptide and peptoid repeat units.
Article
Polymer Science
Yanping Li, Songyi Xu, Jun Ling, Ke Pan, Yujian Liu, Yougen Chen
Summary: This study presents a novel controlled/living ring-opening polymerization method for epsilon-caprolactone and delta-valerolactone using EDPP and DPP. The unique equilibrium reaction between the active phosphinite center and its protonated dormant species plays a crucial role in achieving controlled polymerization. The living nature of the polymerization process is confirmed through kinetic studies and chain extension experiments, leading to the synthesis of polyesters with controlled molar masses and moderate dispersities.
Article
Chemistry, Multidisciplinary
Bo Song, Tianwen Bai, Dongming Liu, Rong Hu, Dan Lu, Anjun Qin, Jun Ling, Ben Zhong Tang
Summary: In this study, CO2-based polyesters were successfully degraded into high-value derivatives through controlled reaction conditions. The degradation process was visualized and applied in various fields such as bioimaging and waste recovery, solving the end-of-life issue of polymers.
Article
Chemistry, Multidisciplinary
Kaihao Chen, Zhiqi Zhu, Tianwen Bai, Yixuan Mei, Tianlun Shen, Jun Ling, Xufeng Ni
Summary: We designed and performed a novel strategy to produce polyesters using CO2 and olefins, by individually synthesizing PCL and EVL oligomers through anionic ring-opening polymerization and conjugated addition oligomerization, and then inserting EVL oligomers into PCL by transesterification, resulting in polyesters with tunable topology and composition.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Engineering, Biomedical
Jingya Xia, Liying Wang, Tianlun Shen, Ping Li, Peiyun Zhu, Shengnan Xie, Zhenyan Chen, Fei Zhou, Jingfeng Zhang, Jun Ling, Xiangrui Liu, Hong Yu, Jihong Sun
Summary: Despite the initial promise of photothermal ablation (PTA) therapy, the inability to completely ablate large tumors is problematic. This study developed a smart photothermal nanosystem (PBM) based on FDA-approved Prussian blue (PB) nanoparticles, doped with Mn (III) to address this issue. The PBM nanosystem amplified the PTA-induced cGAS-STING pathway, leading to a robust immune response and suppression of both local residual and distant tumors.
ACTA BIOMATERIALIA
(2023)
Article
Chemistry, Multidisciplinary
Yixuan Mei, Kaihao Chen, Jiayu Gu, Jun Ling, Xufeng Ni
Summary: This study reports the successful synthesis of a copolymer of 2-methyltetrahydrofuran (2-MeTHF) and beta-butyrolactone (BBL) through Sc(OTf)(3)-catalysed cationic ring-opening copolymerization. The possibility of copolymerization was verified by density functional theory (DFT) calculations. The obtained copolymer, poly(2-MeTHF-co-BBL), showed promising properties and potential as an environmentally friendly material.
Article
Nanoscience & Nanotechnology
Kai Hao, Ronglu Cui, Lifeng Fang, Jun Ling, Baoku Zhu
Summary: In this study, a neutral surface of polysarcosine (PSar), a hydrophilic polypeptoid, was successfully synthesized and modified to enhance its compatibility with water, reduce protein adsorption and cytotoxicity, and demonstrate good hemocompatibility and antifouling properties.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Polymer Science
Siqi Wang, Tianlun Shen, Kai Hao, Xinfeng Tao, Jihong Sun, Jun Ling
Summary: Hyperbranched poly(a-amino acid)s have attracted attention for their biocompatibility, degradability, and bioactivity. Unique polymerization reactions of di-NNPC resulted in hyperbranched polypeptoids instead of gels. The molecular weights of the hyperbranched polypeptoids were controlled by tuning the initial concentrations of monomer and basic catalyst. The residual glycine pendant groups on the polymer chains were used for Gd3+ complexation and post-modification, making the hyperbranched polypeptoids multifunctional single molecular micelles applicable as contrast agents and probes in magnetic resonance imaging and photoluminescence.
MACROMOLECULAR CHEMISTRY AND PHYSICS
(2023)
Review
Polymer Science
Ting Shen, Kaihao Chen, Yougen Chen, Jun Ling
Summary: To address the plastic waste crisis, there are efforts to develop sustainable polymer materials that can degrade through disposing and decomposing to small molecules (DDM) or via chemical recycling to monomers (CRM). Polyacetals, a type of pH-responsive polymers, can degrade under acidic conditions but remain stable under neutral and basic conditions. Their synthesis through cationic ring-opening polymerization (CROP) has challenges but recent advancements in CRM have renewed interest in this method. Polyacetals offer recyclable materials with DDM and CRM potential, expanding closed-loop recycling options and improving degradation properties of traditional polyesters and polyolefins.
MACROMOLECULAR RAPID COMMUNICATIONS
(2023)
Article
Multidisciplinary Sciences
Jie Zhang, Tianwen Bai, Weixi Liu, Mingzhao Li, Qiguang Zang, Canbin Ye, Jing Zhi Sun, Yaocheng Shi, Jun Ling, Anjun Qin, Ben Zhong Tang
Summary: High refractive index polymers (HRIPs) with excellent optical transparency are prepared by using organobase catalyzed polymerization. The HRIPs exhibit high refractive indices, high molecular weights, and low propagation loss. The polymers also have aggregation-induced emission feature for monitoring the uniformity and continuity of optical waveguides.
NATURE COMMUNICATIONS
(2023)
Review
Chemistry, Multidisciplinary
Kaihao Chen, Yixuan Mei, Zhuorui Zhang, Jun Ling, Xufeng Ni
Summary: As a substituted-delta-valerolactone, alpha-ethylidene-delta-vinyl-delta-valerolactone (EVL) offers a method to utilize carbon dioxide and 1,3-butadiene in producing functional polymers. Recent successful attempts in polymerizing EVL have led to the development of novel synthetic strategies and functional polymers. This review highlights the ring-opening reactions of EVL and its derivatives, as well as the ring-opening (co)polymerizations, showcasing the unique properties of the obtained functional polymers and their application potential in various fields.
Article
Polymer Science
Jianping Wang, Peng Zhou, Ting Shen, Songyi Xu, Tianwen Bai, Jun Ling
Summary: This study developed a novel method to synthesize glycine-rich poly-(amino acid)-s (PAAs) through controlled ring-opening copolymerization. The synthesized copolymers exhibited predictable molecular weights and tunable glycine incorporation, and could form nanoparticles or hydrogel in water. The beta-sheet folding of poly-(Gly-r-Lys) remained intact in a neutral environment. This strategy opens up new possibilities for engineering glycine-rich PAAs and expanding their applications.
Article
Materials Science, Biomaterials
Shangyu Chen, Peng Zhou, Wan Yang, Danni Hu, Pengfei Chen, Pengfei Sun, Jun Ling, Quli Fan
Summary: In this study, a modified near-infrared II (NIR-II) small-molecule-based polymer was prepared for efficient breast cancer pulmonary metastasis imaging. The polymer showed good solubility, high fluorescence quantum yield, and prolonged blood circulation half-life, and demonstrated better tumor accumulation capability even at low dye concentration. The successful use of this polymer in noninvasive NIR-II fluorescence imaging for breast cancer pulmonary metastasis was demonstrated.
BIOMATERIALS SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Huiyang Wang, Siqi Wang, Xisong Zhu, Wenxiu Ding, Tianlun Shen, Hongjie Fan, Yanhua Zhang, Lijun Peng, Hong Yuan, Xiangrui Liu, Jun Ling, Jihong Sun
Summary: In this study, an iron-based solid lipid nanoparticle (SLN) was developed, which can be absorbed by the intestinal wall and enhance contrast in MRI. Experimental results using mouse models showed that the SLN has better diagnostic value for acute ulcerative colitis and colon adenocarcinoma. Confocal fluorescence microscopy confirmed that the SLN mainly distributes in the intestinal mucosa and tumor capsule.
INTERNATIONAL JOURNAL OF NANOMEDICINE
(2022)
Article
Polymer Science
Yuanzhang Jiang, Xuyi Wang, Yanting Han, Dakai Gong, Yingchun Gu, Lin Tan
Summary: In this study, FeCl3 and poly(acrylic acid) (PAA) were doped into waterborne polyurethanes (WPUs) to create multifunctional materials with self-healing and antimicrobial properties. WPU/Fe/PAA-5.5, containing 5.5 wt % PAA, exhibited excellent mechanical properties, strong self-healing capabilities, and an impressive antimicrobial rate of over 90%. These supramolecular films were also highly recyclable through hot-pressing.
Article
Polymer Science
Longyu Tian, Min Wang, Guangming Liao, Baoliang Liu, Sujuan Zhang, Yucheng Sun, Zhen Meng, Jintao Zhang, Zaijun Lu
Summary: Two kinds of benzoxazine monomers were synthesized and used to prepare polybenzoxazine anion exchange membranes (AEMs) with quaternary ammonium functionalization. The LQPBZ AEM exhibited better ion conductivity and alkaline stability.
Article
Polymer Science
Claire A. Lemarchand
Summary: This study investigates the shock behavior of three different polymers through molecular dynamics simulations. The results reveal specificities in the shock behavior of polymers, including deviations from the linear relation between shock velocity and particle velocity, as well as differences in shear stress relaxation behind the shock front. It is found that the deviation of the Hugoniot locus is related to the change in the relative contribution of bonding and non-bonding potential energies, while polymers with higher glass transition temperatures exhibit slower shear stress relaxation.
Article
Polymer Science
Zengquan Liu, Xiaochun Yin, He Zhang, Shuo Gao, Qinglin Kuang, Yanhong Feng
Summary: A powder solid-state extension (PSSE) technology was proposed to address the high melt viscosity issue of UHMWPE. By uniaxial extension and sintering in the solid state, a highly self-reinforced material was prepared. X-ray diffraction and scattering techniques were used to study the structural evolution during the PSSE process, and a solid-phase induced transformation model was established.
Article
Polymer Science
Zhike Li, Anyu Luo, Rui Zhou, Xin Li, Haiyan Li
Summary: A novel high temperature resistance IL@SiO2 nanocapsules were successfully prepared and their friction and wear properties in PA6 composites were studied. The addition of IL@SiO2 nanocapsules reduced the friction coefficient and wear rate without affecting the mechanical properties of PA6. The synergy between the IL core and SiO2 wall in the nanocapsules improved the self-lubricating performance of the PA6 composites.
Article
Polymer Science
Xin Liu, Xuhong Guo, Qi Liao
Summary: In this study, an algorithm for accurately estimating viscosity is developed using molecular dynamics simulations and the Green-Kubo formula. This algorithm can be applied to complex systems with long correlations, such as macromolecular and biological simulation systems.
Article
Polymer Science
Hao Pu, Yun-Lei Hou, Jing -Zhou Chen, Dong -Lin Zhao
Summary: The use of modified graphene improves the interfacial adherence of carbon fibers to epoxy resin, resulting in enhanced interfacial and bending properties of CF and matrix in CF/EP composites, as well as increased interlaminar shear strength and flexural strength.
Article
Polymer Science
Wei-Chung Ke, Jin-Wei Lin, Manohar Reddy Busireddy, Yueh-Hsing Lee, Jiun-Tai Chen, Chain-Shu Hsu
Summary: This study introduces a crosslinkable monomer, TAIC, to synthesize three crosslinked polyimide films, which exhibit improved thermal, mechanical, and dielectric properties. The introduction of TAIC enhances the tensile strength, reduces the dielectric constant and dielectric loss, and decreases the coefficient of thermal expansion of the polyimide films.
Article
Polymer Science
Alex Kwasi Kumi, Ruiling Fan, Ye Chen, Yumei Zhang
Summary: The difference in leaching of amylopectin from cellulose/amylopectin/1-butyl-3-methylimidazolium chloride ([Bmim][Cl]) blends during regeneration in water and aqueous ethanol has been studied. Molecular dynamics simulations showed that the dissolution and regeneration mechanisms of amylopectin in [Bmim][Cl] are similar to cellulose in ionic liquids. Water regeneration leads to weak electrostatic interactions, resulting in high leaching of amylopectin. In contrast, ethanol-water interactions enhance electrostatic interactions among amylopectin chains, limiting amylopectin leaching in aqueous ethanol.
Article
Polymer Science
Xi Zeng, Junwei Zhou, Junbiao Peng, Chunsheng Zhang, Danling Wang, Yihu Song, Qiang Zheng
Summary: This study utilizes an oligomer deep eutectic solvent (DES) based on polyethylene glycol to regulate the vulcanization kinetics of rubber. The results show that the DES can accelerate vulcanization at low temperatures without affecting the crosslinking density and Mullins effect.
Article
Polymer Science
Qianqian Yue, Yongfei Peng, Xingjian Liu, Aihua He, Huarong Nie
Summary: The addition of metal deactivators can effectively suppress the aging of TBIR, prolong its lifespan, and have no negative effects on its physical and processing properties. These research findings are of great importance for improving the stability and aging resistance of polymers.
Article
Polymer Science
J. Gomez-Caturla, J. Ivorra-Martinez, R. Tejada-Oliveros, V Moreno, D. Garcia-Garcia, R. Balart
Summary: This work focuses on the development of environmentally friendly PLA formulations by using different esters derived from geraniol as plasticizers. The results show that these esters have good compatibility with PLA, and they can effectively enhance the elongation and plasticity of PLA, reduce its glass transition temperature, and slightly improve its water absorption capabilities.
Article
Polymer Science
Dandan Li, Zhaohui Lu, Zhao Ke, Ke Xu, Fengna Dai, Youhai Yu, Guangtao Qian, Chunhai Chen
Summary: In this study, cross-linked PI aerogel membranes with low dielectric constant and high moisture resistance were prepared by co-polymerization and scraping coating technology. The incorporation of fluorinated blocks and benzimidazole ring structures resulted in novel PI aerogel membranes with fascinating dielectric properties and outstanding moisture resistance.
Article
Polymer Science
Zhaoyang Chu, Qing Zhang, Haihua Luo, Han Zhou, Fapei Zhang, Wei Chen, Wenhua Zhang
Summary: Multi-physical fields solution processing strategy is a universal and facile method for preparing various conjugated polymer films and high-performance devices. In this study, we employed a combined microfluidic flow and ultrasonication strategy (FU) for processing CP solutions, and found a pronounced synergetic effect in promoting the pre-ordering of chains in solution. The conformation order and anisotropy of the solution were revealed through various characterizations. A non-classical nucleation model for polymer crystallization in non-equilibrium solution processing was confirmed. The roles of microfluidic flow and ultrasonication in chain aggregation and crystallization were addressed through multi-physical simulations. Compared to pristine solutions, the FU strategy showed improved solution anisotropy and crystallization kinetics, resulting in higher crystallinity in films and increased mobilities in OFET devices. The FU processing strategy provides a universal approach for regulating chain conformation and aggregation in conjugated polymer solutions.
