Macromolecular Chemistry and Physics最新文献_第10页

Correction to Effect of Chitosan on the Microstructural Properties of Zinc Ferrite Nanoparticles 更正壳聚糖对铁氧体锌纳米粒子微结构特性的影响

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2024-05-13 DOI: 10.1002/macp.202400130

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Electrochemical Performance of Polyaniline-Polyvanadate-Copper Nanomaterials for the Detection of Benzoic Acid 用于检测苯甲酸的聚苯胺-聚钒酸铜纳米材料的电化学性能

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2024-05-10 DOI: 10.1002/macp.202300444

Yiming Gao, Lihong Zhuang, Yanan Zhang, Yong Zhang, Lizhai Pei, Xinjiong Li

{"title":"Electrochemical Performance of Polyaniline-Polyvanadate-Copper Nanomaterials for the Detection of Benzoic Acid","authors":"Yiming Gao, Lihong Zhuang, Yanan Zhang, Yong Zhang, Lizhai Pei, Xinjiong Li","doi":"10.1002/macp.202300444","DOIUrl":"10.1002/macp.202300444","url":null,"abstract":"The introduction of nanomaterials as modified electrode materials into the field of electrochemical sensing is expected to improve the reliability, sensitivity, selectivity and repeatability of electrochemical sensors in detecting pollutants in the water environment. In this study, copper vanadate nanomaterials (Cu3V2O7(OH)2·2H2O, referred to as CVO) and Cu3V2O7(OH)2·2H2O/polyyaniline (PANI) composite nanomaterials (referred to as CVO/PANI) are successfully prepared and characterized by Fourier transform infrared spectrum (FTIR), X-ray traveling-action (XRD), scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HR-TEM). The modified glassy carbon electrodes (GCE) with these two materials are used for the detection of benzoic acid (BA) and exhibit excellent electrochemical sensing performance. The results show that two pairs of semi-reversible redox peaks exist in both CVO and CVO/PANI modified glassy carbon electrode (GCE) in BA solution. The linear range of CVO and CVO/PANI nanomaterials-modified GCE is 0.01–2 mm and 0.001–2 mm, and the limits of detection are 2.16 and 0.41 µm, respectively. PANI plays important role in the electrochemical responses of BA at CVO/PANI modified GCE. PANI enhances the intensities of CV peaks and electrochemical determination ability for BA.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140936971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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A pH/Redox Dual-Responsive Nanocarrier for Hypoxia-Activated Prodrug and Anticancer Prodrug in Cancer Treatment 用于癌症治疗的低氧激活原药和抗癌原药的 pH/Redox 双响应纳米载体

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2024-05-08 DOI: 10.1002/macp.202470018

Jhin Chen Ho, Ching-Yi Chen

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Masthead: Macromol. Chem. Phys. 9/2024 刊头：Macromol.Chem.9/2024

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2024-05-08 DOI: 10.1002/macp.202470019

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Core–Shell Bacterial Cellulose/Graphene Oxide@Polydopamine Aerogel Fibers for Personal Thermal Management Textiles 用于个人热管理纺织品的核壳细菌纤维素/氧化石墨烯@聚多巴胺气凝胶纤维

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2024-05-06 DOI: 10.1002/macp.202300443

Weijie Zhang, Guanzhi Zhao, Chaoxia Wang, Yunjie Yin

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Smartphone-Based Molecularly Imprinted Photonic Crystal Hydrogel Sensor for the Label-Free Detection of Bisphenol A 用于无标签检测双酚 A 的基于智能手机的分子印迹光子晶体水凝胶传感器

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2024-04-29 DOI: 10.1002/macp.202400043

S. S. Sree Sanker, Subin Thomas, Savitha Nalini, Dhanya P. Jacob, Vathiyedath Sulaiman Suniya, Kottarathil Naduvil Madhusoodanan

{"title":"Smartphone-Based Molecularly Imprinted Photonic Crystal Hydrogel Sensor for the Label-Free Detection of Bisphenol A","authors":"S. S. Sree Sanker, Subin Thomas, Savitha Nalini, Dhanya P. Jacob, Vathiyedath Sulaiman Suniya, Kottarathil Naduvil Madhusoodanan","doi":"10.1002/macp.202400043","DOIUrl":"10.1002/macp.202400043","url":null,"abstract":"Here, the implementation of a smartphone-based portable molecularly imprinted photonic crystal hydrogel (MIPCH) colorimetric sensor for the visual and label-free detection of bisphenol A (BPA) in water samples is reported. The sensor is prepared by photopolymerizing BPA-added hydrogel precursor solution within the voids of a photonic crystal opal film, followed by the extraction of BPA molecules. Rebinding of the BPA analyte to the MIPCH causes the hydrogel to swell, leading to a significant redshift in the diffracting spectrum. The MIPCH sensor exhibits a low limit of detection of 0.96 × 10−15 m. The sensor also shows linear response in the femtomolar range, rapid responsiveness (≤6 min), selective detection of BPA in complex matrices, long-term stability, and reproducibility. Images of the sensor responses are used to train a deep-learning-based regression model on a smartphone to predict the BPA concentration quantitatively. Integration of the regression model with the developed sensor provides an accurate and portable smart sensor platform well-suited for real-time and on-field monitoring of BPA.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140841574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Oxidation of Supported Amines for CO2 Direct Air Capture: Assessing Impact on Physical Properties and Mobility via NMR Relaxometry 用于二氧化碳直接空气捕获的支撑胺的氧化：通过核磁共振弛豫测定法评估对物理性质和流动性的影响

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2024-04-24 DOI: 10.1002/macp.202400023

Elwin Hunter-Sellars, Julia D. Kerr, Hannah V. Eshelman, Zoe A. Pollard, Anthony J. Varni, Miles A. Sakwa-Novak, Maxwell A. T. Marple, Simon H. Pang

{"title":"Oxidation of Supported Amines for CO2 Direct Air Capture: Assessing Impact on Physical Properties and Mobility via NMR Relaxometry","authors":"Elwin Hunter-Sellars, Julia D. Kerr, Hannah V. Eshelman, Zoe A. Pollard, Anthony J. Varni, Miles A. Sakwa-Novak, Maxwell A. T. Marple, Simon H. Pang","doi":"10.1002/macp.202400023","DOIUrl":"10.1002/macp.202400023","url":null,"abstract":"Aminopolymer-based adsorbents are commonly investigated for CO2 direct air capture (DAC). In the presence of high temperature and oxygen, which can occur during adsorption-regeneration cycles, oxidative degradation can significantly reduce adsorbent lifetime. Degradation is typically measured using adsorption performance metrics or chemical characterization. This work demonstrates that the polymer's physical properties, as measured via nuclear magnetic resonance (NMR) relaxometry and differential scanning calorimetry, can be used to quantitatively track degradation. The extent of oxidation of an alumina-poly(ethylenimine) sample, measured by reductions in amine efficiency (A.E.), is correlated with proton T2 relaxation times. This work hypothesizes that T2 relaxation accurately tracks oxidative degradation in aminopolymers due to the reduction in polymer mobility occurring during the oxidation process. The ability to use NMR relaxometry as a noninvasive technique to probe degradation is demonstrated on a 1-inch square-channel monolith adsorbent exposed to actual DAC service conditions. This highlights the potential for relaxometry to evaluate the state of the adsorbent accurately and rapidly compared to typical analytical methods.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140665961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Masthead: Macromol. Chem. Phys. 8/2024 刊头：Macromol.Chem.8/2024

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2024-04-22 DOI: 10.1002/macp.202470017

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High Electrical and Mechanical Properties Obtained in a Polyimide-Based Nanocomposite with Sandwich Structure via Multidimensional Design 通过多维设计获得具有三明治结构的聚酰亚胺基纳米复合材料的高电气性能和机械性能

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2024-04-22 DOI: 10.1002/macp.202470016

He Zhao, Chunyu Wang, Zhenlong Zhang, Jinghua Yin, Minghua Chen, Yuanyuan Liu

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Barrier Properties of Biodegradable Aliphatic–Aromatic Copolyesters (PBXT Series) 可生物降解脂肪芳香族共聚聚酯（PBXT）系列的阻隔性能

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2024-04-19 DOI: 10.1002/macp.202400051

Lizheng Wang, Zhu Tu, Jiaming Liang, Zhiyong Wei

{"title":"Barrier Properties of Biodegradable Aliphatic–Aromatic Copolyesters (PBXT Series)","authors":"Lizheng Wang, Zhu Tu, Jiaming Liang, Zhiyong Wei","doi":"10.1002/macp.202400051","DOIUrl":"10.1002/macp.202400051","url":null,"abstract":"In this study, a series of biodegradable poly(butylene alkylene carboxylate-co-terephthalate) copolymers with varying methylene numbers in the alkylene units (0, 2, 4, and 8) are synthesized. These copolymers, namely, poly(butylene oxalate-co-terephthalate) (PBOT), poly(butylene succinate-co-terephthalate) (PBST), poly(butylene adipate-co-terephthalate) (PBAT), and poly(butylene sebacate-co-terephthalate) (PBSeT), are prepared with nearly identical structural and molar compositions. The objective of this study is to comprehensively examine the impact of alkylene unit length on the barrier properties of the materials, delving into aspects such as crystallinity, free volume, molecular chain mobility, as well as adsorption and diffusion of gases within the materials. The findings indicate a decrease in crystallinity from 17.2% for PBOT to 10.2% for PBSeT as the alkylene chain length increases, while maintaining the same chemical composition. Concurrently, the fractional free volume increases from 0.9% to 2.6%, and the melt flow activation energy decreases from 106.6 to 52.1 kJ mol−1. Importantly, theoretical calculations are performed, demonstrating that the predominant site for gas adsorption and diffusion is within the material's free volume. These combined observations indicate a gradual decrease in barrier properties as the number of methylene groups increases.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140629632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0