Reactive & Functional Polymers最新文献

{"title":"Preparation of new hybrid materials based on polymeric membranes and polarized electrodes for Cu2+ and Pb2+ photo reduction","authors":"O. Arous ,&nbsp;R. Bagtache ,&nbsp;L. Bechohra ,&nbsp;S. Merazka ,&nbsp;B. Bellal ,&nbsp;M. Trari","doi":"10.1016/j.reactfunctpolym.2025.106274","DOIUrl":"10.1016/j.reactfunctpolym.2025.106274","url":null,"abstract":"<div><div>A new system combining ionic membranes–semiconductors is studied for the photo-reduction of metallic ions M²⁺ (Pb²⁺ and Cu²⁺) from water. For this purpose, a novel class of cellulose triacetate (CTA) membranes was developed; they were modified by polyanethol-sulfonic acid (PATSA), polyethylene glycol (PEG), polyethylenimine (PEI), polyvinyl pyrrolidone (PVP) incorporation that are selectively permeable to metallic ions. The synthesized membranes were plasticized by nitro-phenyl pentyl ether (NPPE) to improve the physical and mechanical properties. The elaborated membranes were characterized by thermal analysis (TGA), FTIR spectroscopy and Scanning Electron Microscopy (SEM). In parallel, two semi-conductors namely <em>p</em>-CuO and <em>n</em>-ZnO were prepared by precipitation in alkaline medium and characterized physically and electrochemically. The optical gaps of CuO (1.30 eV) and ZnO (3.25 eV) were obtained from the diffuse reflectance. The activation energies were deduced from the slope of the plots log (conductivity) vs. 1000/T. The electrochemical characterization was undertaken to establish the energy diagram of the system “<em>p</em>-CuO / water / M²⁺ electrolyte membranes/ water/ <em>n</em>-ZnO”, a preamble of the M²⁺ photo-electrodeposition. The conduction band of CuO (−0.11 V_<em>SCE</em>) is cathodic enough for the reduction of metal ions. As application the photo-electro-dialysis was successfully exploited to reduce the cations M²⁺ (Pb²⁺, Cu²⁺) under visible light. The results indicated that the combined system enhances considerably the electrons transfer and the diffusion flux of M²⁺ ions, thus giving appreciable percentages of M²⁺ reduction to elemental state. Abatements of 82 and 25 % were reached respectively for Pb²⁺ and Cu²⁺ upon visible light irradiation.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"213 ","pages":"Article 106274"},"PeriodicalIF":4.5,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143724981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of the effect of different π-bridge units on the optical and electrical properties of carbazole-based polymers","authors":"Merve Guzel","doi":"10.1016/j.reactfunctpolym.2025.106277","DOIUrl":"10.1016/j.reactfunctpolym.2025.106277","url":null,"abstract":"<div><div>Recent advances in science and technology have increased interest in the synthesis of new materials and their potential applications. The choice of bridge units in molecular architecture plays a crucial role in obtaining conjugated materials with desired properties. The main highlight of this work is to study of the effect of two different π-bridges on the structural, optical, electrical, and electronic properties of carbazole-based compounds. Herein, two monomers with structurally donor-π-conjugated linker-donor (D-π-D) architecture containing carbazole as the D unit and glyoxal or terephthalaldehyde as π-conjugated linkers were designed and synthesized.The structural properties of (1E,2E)-N¹,N²-bis(9-ethyl-9H-carbazol-3-yl)ethane-1,2-diimine (namely Cz-Gly) and 1,1′-(1,4-phenylene)bis(N-(9-ethyl-9H-carbazol-3-yl)methanimine) (namely Cz-Tpa) were successfully characterized by different spectroscopic techniques (NMR, FT–IR, UV–Vis, fluorescence, and mass) and elemental analysis. Also, the structure-property relationships of monomers with different π-bridges were investigated by density functional theory (DFT) with the Beck3-Lee-Yang-Parr (B3LYP) hybrid functional level and 6-31G(d,p) basis set. The pCz-Gly and pCz-Tpa polymer thin films were synthesized using electropolymerization on indium‑tin-oxide (ITO) substrates. The role of different bridge units on the electrochemical, optical, and morphological properties of the polymers was investigated in detail. The pCz-Tpa with the rigid and conjugated bridge unit exhibited higher optical contrast and coloration efficiency, faster switching time, and better electrochemical stability than pCz-Gly. Furthermore, the pCz-Tpa polymer film also revealed distinct color changes from a transparent at neutral state to light pink, orangey brown, light green, and green oxidized forms. These superior properties make the prepared pCz-Tpa polymer film a potential candidate for next-generation applications such as electrochromic devices, supercapacitors, photovoltaic cells, etc. The present work provides an effective strategy to obtain high-performance materials by selecting the appropriate donor and π-bridge units.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"213 ","pages":"Article 106277"},"PeriodicalIF":4.5,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143714586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis and characterization of metal affinity chromatography matrices functionalized with chlorophyll for bromelain purification","authors":"Márjorie Castro Pinto Porfirio,&nbsp;Rui Gomes Nascimento,&nbsp;Mateus Pereira Flores Santos,&nbsp;Jonathan Barbosa Santos,&nbsp;Cristiane Martins Veloso,&nbsp;Renata Cristina Ferreira Bonomo,&nbsp;Rafael da Costa Ilhéu Fontan","doi":"10.1016/j.reactfunctpolym.2025.106273","DOIUrl":"10.1016/j.reactfunctpolym.2025.106273","url":null,"abstract":"<div><div>Immobilized metal ion affinity chromatography (IMAC) is widely used in protein purification processes, and identifying new chelating agents is challenging for the field. This study proposed that chlorophyll is extracted from vegetables as a chelating agent in monolithic matrices for bromelain purification by IMAC. The adsorbents were synthesized by cryogelation and functionalized by the glutaraldehyde method by forming Schiff bases between the amino and carbonyl radicals in the chlorophyll structure. Commercial bromelain (Sigma, ≥ 3 protein units/mg ≥ 30 % protein) was used to experiment. The cryogels immobilized with copper ions stood out and presented an adsorptive capacity (q) of around 46.41 ± 2.93 mg/g. The matrix presented an average degree of expansion (ED) of 11.96 ± 2.66 kg/kg, swelling capacity (S) of 15.13 ± 2.32 L/kg, and porosity (around 85 %). The potential use demonstrated that it was possible to obtain a final enzymatic solution with twice the purity of the initial one, indicating that the adsorbent can still partially separate the enzyme of interest from the total protein fraction. The results demonstrated the similarity between the adsorbents functionalized with different chelating agents, indicating that chlorophyll did not alter the characteristics of the adsorbent and the potential as a chelating agent for application in affinity matrices for immobilized metals for protein purification.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"213 ","pages":"Article 106273"},"PeriodicalIF":4.5,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143705870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rheology-based analysis of the effect of different tackifying resins on the cross-linking behavior of UV SBS pressure-sensitive adhesives","authors":"Dong Wang ,&nbsp;Dawei Hao ,&nbsp;Jiawei Wu ,&nbsp;Jingshu Meng ,&nbsp;Bing Li ,&nbsp;Rui Yang","doi":"10.1016/j.reactfunctpolym.2025.106272","DOIUrl":"10.1016/j.reactfunctpolym.2025.106272","url":null,"abstract":"<div><div>At present, in the field of ultraviolet (UV) curing pressure-sensitive adhesive (PSA), UV light curing polystyrene-butadiene-styrene (SBS) hermoplastic elastomer PSA is less studied and the effect of tackifying resin on the process of UV curing SBS PSA is almost not reported. In this paper, five kinds of tackifying resins were selected, namely C5, HC5, pentaerythritol rosin esters (PRE), HDCPD, HC9 and the structural and molecular weight changes of different tackifying resins compounded with 1 %wt photoinitiator (819) after UV treatment with different time were investigated. In addition, the infrared structure, morphological characterization, rheological and adhesive properties of different tackifying resins PSA with the addition of 819 after irradiation under a UVA-365 nm LED light source for different time were also studied and analyzed. The results show that C5 and HC5 resins are very susceptible to photo-thermal oxidation and poor compatibility with the SBS system and can promote the cross-linking of SBS under UV irradiation. PRE and HDCPD are susceptible to photo-thermal oxidation and self-polymerization under UV irradiation, which hinders the cross-linking process of SBS. HC9 resins have no photoreactivity under UV irradiation and their molecular weight is unchanged, which has less influence on the cross-linking process of SBS. The adhesive properties of HC9 PSA also were effectively improved after UV irradiation, with the ring initial adhesion increasing from 24.94 N to 30.02 N, the 180° peel strength increasing from 0.75 N/mm to 1.15 N/mm, and the holding time increasing from 120 h to more than 500 h.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"213 ","pages":"Article 106272"},"PeriodicalIF":4.5,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143705869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation of gas-filled self-floating chitosan capsules and their application in the removal of methyl orange dye","authors":"Ha Yeon Im,&nbsp;Jae Seok Kim,&nbsp;Jong Kuk Lim","doi":"10.1016/j.reactfunctpolym.2025.106269","DOIUrl":"10.1016/j.reactfunctpolym.2025.106269","url":null,"abstract":"<div><div>Many adsorbents have been developed, and some of which have demonstrated high adsorption capacity. For their practical application, however, it is essential to consider not only the adsorption capacity but also other properties such as ease of separation, acid stability, and antimicrobial properties. Herein, we developed a novel capsule-type adsorbent composed of chitosan. Its interior was filled with gas, and the shell was made up of chitosan chains. This gas-filled structure allowed the chitosan capsule to float on water and to be easily separable from dye solution. The shell of chitosan capsule can be decorated with silver nanoparticles. Such capsules exhibited not only a significant bacteriostatic reduction rate of 99.9 % against <em>E. coli</em>, but also enhanced adsorption performance for methyl orange dyes in the pH range between 6 and 10. The maximum adsorption capacity of chitosan capsules increased from 547 to 877 mg/g at pH 6 by silver decoration. The polymer chains of silver-decorated chitosan capsules can be further interconnected by glutaraldehyde. Such cross-linker enabled the chitosan capsule to be stable at pH 3. Silver-decorated and glutaraldehyde-interconnected chitosan capsules are suitable for use across a wide pH range, from 3 to 10, but their maximum adsorption capacity at pH 6 decreased to 605 mg/g. This increase and decrease in adsorption performance by silver nanoparticles and glutaraldehyde were discussed through adsorption isotherm and kinetic studies.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"213 ","pages":"Article 106269"},"PeriodicalIF":4.5,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143696045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multi-functional polyvinyl chloride plastic additive based on epoxidized linseed oil-polycaprolactone: Preparation and application performance study","authors":"Li-Juan Liu ,&nbsp;Fang-Yu Chen ,&nbsp;Sen Zhu ,&nbsp;Liang Yan ,&nbsp;Rong-Xu Zhao ,&nbsp;Pei-Yao Chen ,&nbsp;Bin Wang","doi":"10.1016/j.reactfunctpolym.2025.106270","DOIUrl":"10.1016/j.reactfunctpolym.2025.106270","url":null,"abstract":"<div><div>Flexible polyvinyl chloride (PVC) is a class of widely used medical plastic materials, where the integration of diverse additives is crucial for fine-tuning their comprehensive properties. Recently, there has been a growing emphasis on the biological safety and performance standards of medical devices, necessitating the urgent development of novel PVC-based medical plastics. Herein, a multifunctional polymer additive based on epoxidized linseed oil and polycaprolactone (ELO-PCL) was designed and synthesized. ELO-PCL exhibited outstanding migration resistance, negligible toxicity and excellent compatibility with PVC. Differential scanning calorimetry and tensile tests confirmed that ELO-PCL can efficiently plasticize PVC and enhance the mechanical properties of the plastic. Thermal aging tests revealed that ELO-PCL can significantly improve the thermal stability of the plastic, enabling the plastic to maintain its low glass transition temperature, good mechanical properties and appearance after thermal aging. Moreover, the incorporation of ELO-PCL into PVC plastic effectively inhibited discoloration of the plastic during harsh surface chemical modification. To assess the potential of this plastic for the preparation of functionalized medical plastics, it was modified with polyethylene glycol and its anti-biofouling performance was evaluated. Additionally, comparative experiments were conducted to elucidate the relationship between the composition of ELO-PCL and the overall performance of the PVC plastics.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"213 ","pages":"Article 106270"},"PeriodicalIF":4.5,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143680566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dielectric properties of chitosan membranes cross-linked with glutaraldehyde or genipin","authors":"M.H. Wolf ,&nbsp;N. Izaguirre ,&nbsp;J. Labidi ,&nbsp;A. Ribes-Greus","doi":"10.1016/j.reactfunctpolym.2025.106271","DOIUrl":"10.1016/j.reactfunctpolym.2025.106271","url":null,"abstract":"<div><div>This study investigates the impact of covalent cross-linking using glutaraldehyde (GA) and the biobased alternative genipin (GP) on the dielectric and conductive properties of chitosan membranes. For protonation, the solvent-casted membranes were immersed in a 1.0 M sulfuric acid solution (S). The resulting property changes were assessed using Fourier-Transform Infrared (FTIR) spectroscopy, water uptake studies, Differential Scanning Calorimetry (DSC), and Dielectric Thermal Analysis (DETA). The genipin-cross-linked membrane demonstrated higher water uptake than the glutaraldehyde-cross-linked one, attributed to less effective cross-linking and greater free volume between polymer chains. The membranes immersed in the sulfuric acid solution exhibited reduced water uptake and swelling due to a denser structure formed by short ionic bridges. All the chitosan-based materials showed dielectric spectra containing the same relaxation mechanisms (β-, β_wet-, α-relaxation, and MWS polarisation). Covalent cross-linking and sulfuric acid immersion increased the activation energy of the β-relaxation, due to the formation of strong bonds that limit the mobility of glycosidic linkages. The covalent bonds restrict the segmental dynamics of the chitosan backbone, leading to an increase in the Vogel temperature of the associated α-relaxation, particularly with glutaraldehyde. The β_wet-relaxation temperature decreased following sulfuric acid solution treatment, due to greater retention of bound water resulting from the incorporation of charged sulfate groups.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"213 ","pages":"Article 106271"},"PeriodicalIF":4.5,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143680567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancement of flame retardancy and mechanical properties of unsaturated polyester resin through organic-inorganic hybrid flame retardant composites","authors":"Kaidong Qiu ,&nbsp;Xida Zhang ,&nbsp;Xingyu Liu ,&nbsp;Zhiquan Chen ,&nbsp;Lei Ni ,&nbsp;Zhongwei Chen ,&nbsp;Yuan Yu ,&nbsp;Juncheng Jiang","doi":"10.1016/j.reactfunctpolym.2025.106266","DOIUrl":"10.1016/j.reactfunctpolym.2025.106266","url":null,"abstract":"<div><div>In order to fill the gap in the application of organic-inorganic flame retardant systems for flame-retarding unsaturated polyester resin (UPR) and develop highly efficient flame-retarded UPR composites to meet market demands, an organic-inorganic flame retardant system named PHAO@KL is proposed. A comprehensive analysis is conducted on the impacts of PHAO@KL on the flame-retardant and mechanical properties of unsaturated polyester, as well as its flame-retardant mechanism. The results obtained from the cone calorimeter demonstrated that the combination of 15 wt% PHAO and 15 wt% kaolin (KL) led to a reduction of 45.7 % and 38.9 % in the peak of the maximum heat release rate and the total heat release of the UPR composites, respectively. The PHAO@KL flame retardant system enhanced the mechanical properties of the UPR composites. Specifically, the tensile and flexural strengths of UPR/15PHAO@15KL reached 35.6 and 56.9 MPa, respectively, which were increased by 36.4 % and 31.4 % compared with those of pure UPR. Furthermore, the flame-retardant mechanism of PHAO@KL was investigated through X-ray photoelectron spectroscopy, Raman spectroscopy and scanning electron microscopy (SEM). The results indicated that the catalytic char-forming effect of PHAO interacted with the fragmented KL generated during combustion to form a stable heat-insulating barrier, thereby significantly strengthening the flame retardancy of the UPR composites and providing a reference for the development of organic-inorganic flame retardant systems.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"213 ","pages":"Article 106266"},"PeriodicalIF":4.5,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143680576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of thermal orientation on the dielectric properties of dendronised poly(2-oxazoline) hybrid membranes","authors":"Mark Henning Wolf ,&nbsp;Jordi Guardià ,&nbsp;José Antonio Reina ,&nbsp;Xavier Montané ,&nbsp;Marta Giamberini ,&nbsp;Amparo Ribes-Greus","doi":"10.1016/j.reactfunctpolym.2025.106268","DOIUrl":"10.1016/j.reactfunctpolym.2025.106268","url":null,"abstract":"<div><div>Dendronised poly(2-oxazoline) hybrid membranes were prepared by solution impregnation and phase inversion precipitation. Dielectric Thermal Analysis (DETA) was used to investigate the effect of the annealing temperature on the dielectric properties of these Side-Chain Liquid-Crystalline Polymers (SCLCPs). Independent of the different thermal treatments, the poly(2-oxazoline) hybrid membranes show similar dielectric spectra containing the same four relaxation mechanisms (γ-, α_Tg-, α_Clear-, and ρ-relaxation). The thermal orientation reduces the activation energy of the γ-relaxation, by modifying the steric hindrance of the associated aliphatic side chains. Aligning the polymer chains to each other, due to thermal annealing, leads to a less fragile structure. This reduced cooperativity decreases the temperature of the α_Tg-relaxation, related to the glass transition. The highly ordered structure of the oriented membranes increases the activation energy and temperature of the α_Clear-relaxation, associated with the freeing movement of the mesogenic side groups, especially in the homeotropically aligned membrane. The random orientation decreases the electron conductivity and its thermal activation, while the homeotropic alignment results in an increase, due to the orientation of the columns. The thermal orientation of SCLCPs leads to differences in the temperature dependence and cooperativity of the molecular relaxations and the conductive properties, providing valuable insights into their molecular structure and arrangement.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"213 ","pages":"Article 106268"},"PeriodicalIF":4.5,"publicationDate":"2025-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143704521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pentiptycene-based ladder polymers for membrane gas separation","authors":"Jianzhi Zheng ,&nbsp;Can Wang ,&nbsp;Changwei Jing ,&nbsp;Ying Wu ,&nbsp;Ke Zhang ,&nbsp;Shuangjiang Luo","doi":"10.1016/j.reactfunctpolym.2025.106267","DOIUrl":"10.1016/j.reactfunctpolym.2025.106267","url":null,"abstract":"<div><div>A new type of ladder polymers was synthesized by a stoichiometric imbalance-promoted step-growth polymerization method to have the backbones composed of alternative pentiptycene and dibenzocyclooctadiene structural units. The stoichiometric imbalance-promoted step-growth polymerization was developed using a self-accelerating Diels-Alder reaction to polymerize the monomer pairs of sym-dibenzo-1,5-cyclooctadiene-3,7-diyne (DIBOD) and <em>bis</em>-<em>ortho</em>-quinone compounds with pentiptycene groups. This stoichiometric imbalance-promoted step-growth polymerization could be performed under mild heating and catalyst-free conditions. The resulting ladder polymers had rigid and contorted macromolecular structures, which endowed the ladder polymers with intrinsic microporosity of pore sizes between 0.4 and 1.4 nm and high specific surface areas above 618 m²/g. The membranes formed by these novel ladder polymers behaved good gas separation performance for many gas pairs such as H₂/N₂, H₂/CH₄, He/N₂, and CO₂/CH₄.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"213 ","pages":"Article 106267"},"PeriodicalIF":4.5,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143680565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}