Organic Materials最新文献_第2页

Secondary Structure Modulation of Triptycene-Based One-Handed Helical Ladder Polymers through π-Extension of Achiral Segments 非手性段π扩展对三叶草基单手螺旋阶梯聚合物二级结构的调制作用

Organic Materials Pub Date : 2023-11-09 DOI: 10.1055/a-2208-4389

Tomoyuki Ikai, Atsuya Tanaka, Takumi Shiotani, Kosuke Oki, Eiji Yashima

引用次数: 0

Synthesis of Polycyclic Aromatic Hydrocarbons with Highly Twisted N-Doped Heptalene 高扭曲n掺杂七烯多环芳烃的合成

Organic Materials Pub Date : 2023-09-08 DOI: 10.1055/a-2172-1216

Shuhai Qiu, Junzhi Liu

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Microwave-Assisted Synthesis of Poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine] (PTAA) with Well-Defined End Groups and Narrow Dispersity 微波辅助合成端基明确、分散性小的聚[双(4-苯基)(2,4,6-三甲基苯基)胺](PTAA

Organic Materials Pub Date : 2023-06-07 DOI: 10.1055/a-2145-4763

Christian Beck, P. Strohriegl

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Supramolecular Polymerization of all- cis -Fluorinated Cyclohexanes: Influence of Side Chains 全顺氟环己烷的超分子聚合反应：侧链的影响

Organic Materials Pub Date : 2023-05-28 DOI: 10.1055/s-0043-1761314

S. V. Haridas, Oleksandr Shyshov, Max von Delius

{"title":"Supramolecular Polymerization of all- cis -Fluorinated Cyclohexanes: Influence of Side Chains","authors":"S. V. Haridas, Oleksandr Shyshov, Max von Delius","doi":"10.1055/s-0043-1761314","DOIUrl":"https://doi.org/10.1055/s-0043-1761314","url":null,"abstract":"Custom-designed materials based on supramolecular polymers are of interest for applications in organic electronics and biomedicine. Recently, we have shown that derivatives of the highly polar compound all-cis hexafluorocyclohexane undergo seeded polymerization and can therefore be used to prepare soluble nanofibers with controlled length. In this work, we aimed to explore the scope of this process. We studied the supramolecular polymerization of six all-cis-fluorinated cyclohexane monomers, with five differing in the solubilizing side chains and one in the secondary supramolecular binding site. In studies on controlled supramolecular polymerization, we found that three of the monomers could be induced to polymerize by ultrasound irradiation and four by addition of seeds. For these latter examples, we were able to identify a solvent mixture that led to spontaneous polymerization and hysteresis in heating and cooling curves. These results show that\u0000 the living supramolecular polymerization of fluorinated cyclohexanes is not limited to one particular monomer, but that side chains exhibiting a strong solvophobic effect that cannot be compensated within the binary solvent “window” represent a limitation to the approach. We also demonstrate that nanofibers based on stacks of fluorinated cyclohexanes can be dissociated by addition of chloride ions.","PeriodicalId":93348,"journal":{"name":"Organic Materials","volume":"05 1","pages":"166 - 174"},"PeriodicalIF":0.0,"publicationDate":"2023-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48630913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multi-Functionalization of Solid Support via Zn(II)-Mediated Chirality-Directed Self-Assembly Zn（II）介导的手性定向自组装实现固体载体的多功能化

Organic Materials Pub Date : 2023-02-18 DOI: 10.1055/a-2106-9071

Max S. Overshiner, Shuyuan Tian, Kegan B. Morrow, Jailyn R. Wendt, John Zhou, Hannah M. Briggs, Gerardo B. Márquez, K. Kilway, S. Moteki

引用次数: 0

Batch-Operated Condensed Droplet Polymerization to Understand the Effect of Temperature on the Size Distribution of Polymer Nanodomes 间歇操作冷凝液滴聚合以了解温度对聚合物纳米圆顶尺寸分布的影响

Organic Materials Pub Date : 2023-01-28 DOI: 10.1055/s-0043-1761311

Jeremiah James, Rong Yang

{"title":"Batch-Operated Condensed Droplet Polymerization to Understand the Effect of Temperature on the Size Distribution of Polymer Nanodomes","authors":"Jeremiah James, Rong Yang","doi":"10.1055/s-0043-1761311","DOIUrl":"https://doi.org/10.1055/s-0043-1761311","url":null,"abstract":"Size-controlled polymer nanodomes (PNDs) benefit a broad cross-section of existing and emerging technologies. Condensed droplet polymerization (CDP) is a vacuum-based synthesis technology that produces PNDs from monomer precursors in a single step. However, the effect of synthesis and processing conditions on the PND size distribution remains elusive. Towards size distribution control, we report the effect of substrate temperature, on which monomer droplets condense, on the size distribution of PNDs. We take a reductionist approach and operate the CDP under batch mode to match the conditions commonly used in condensation research. Notably, despite the rich knowledge base in dropwise condensation, the behavior of nonpolar liquids like a common monomer, i.e., 2-hydroxyethyl methacrylate (HEMA), is not well understood. We bridge that gap by demonstrating that dropwise condensation of HEMA follows a two-stage growth process. Early-stage growth is dominated by drop\u0000 nucleation and growth, giving rise to relatively uniform sizes with a lognormal distribution, whereas late-stage growth is dominated by the combined effect of drop coalescence and renucleation, leading to a bimodal size distribution. This new framework for understanding the PND size distribution enables an unprecedented population of PNDs. Their controlled size distribution has the potential to enable programmable properties for emergent materials.","PeriodicalId":93348,"journal":{"name":"Organic Materials","volume":"05 1","pages":"148 - 157"},"PeriodicalIF":0.0,"publicationDate":"2023-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41735070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Chemical and Topological Control of Surfaces Using Functional Parylene Coatings 使用功能性聚对二甲苯涂层的表面化学和拓扑控制

Organic Materials Pub Date : 2022-12-08 DOI: 10.1055/s-0043-1761309

Tahereh Mohammadi Hafshejani, Xiaoyang Zhong, John Kim, Bahar Dadfar, J. Lahann

引用次数: 0

Vapor-Deposited Polymer Films and Structure: Methods and Applications 气相沉积聚合物薄膜和结构:方法和应用

Organic Materials Pub Date : 2022-12-02 DOI: 10.1055/a-2076-8570

Fang-yu Chou, Theresia Cecylia Ramli, Chin-Yun Lee, Shu-Man Hu, Jane Christy, Hsien‐Yeh Chen

{"title":"Vapor-Deposited Polymer Films and Structure: Methods and Applications","authors":"Fang-yu Chou, Theresia Cecylia Ramli, Chin-Yun Lee, Shu-Man Hu, Jane Christy, Hsien‐Yeh Chen","doi":"10.1055/a-2076-8570","DOIUrl":"https://doi.org/10.1055/a-2076-8570","url":null,"abstract":"Vapor deposition of polymers is known to result in densified thin films, and recent developments have advanced these polymers with interesting fabrication techniques to a variety of controlled structures other than thin films. With the advantages of chemical modification and functionalization of these polymers, advancements have combined both the physical and chemical properties of these vapor-deposited polymers to obtain controlled anisotropic polymers, including layer-by-layer, gradient, hierarchical, porosity, and the combination of the above, meaning that the produced polymers are functional and are addressed in devised physical configurations and chemical compositions. The main purpose of using polymer coatings as a tool for surface modification is to provide additional properties that decouple the natural properties of the underlying materials (including metals, polymers, oxides/ceramics, glass, silicon, etc.), and recent advancements have rendered novel insights into combined physical and chemical properties to fulfill the increasing needs of sophisticated requirements of materials for users. The review herein intends to deliver messages of recent progress of the advancements of vapor-deposited polymers, with discussions of the variations of the physical structures and chemical functionalities, and how these two aspects are integrated with novel fabrication techniques.","PeriodicalId":93348,"journal":{"name":"Organic Materials","volume":"5 1","pages":"118 - 138"},"PeriodicalIF":0.0,"publicationDate":"2022-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44119961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Flexible Aromatic Amphiphilic Trication for the Solubilization of Hydrophobic Organic Semiconductors in Water 疏水有机半导体在水中溶解的柔性芳香两亲三元化

Organic Materials Pub Date : 2022-11-30 DOI: 10.1055/a-2037-2786

Soujanya H. Goudar, Srinu Kotha, Manya Pal, D. S. Ingle, K. V. Rao

引用次数: 0

Molecular Layer Deposition (MLD) of a Blocked Mercapto Silane on Precipitated Silica 封闭巯基硅烷在沉淀二氧化硅上的分子层沉积

Organic Materials Pub Date : 2022-11-09 DOI: 10.1055/s-0043-1761310

S. Kim, J. R. van Ommen, D. L. Zara, N. Courtois, J. Davin, C. Recker, J. Schoeffel, A. Blume, A. Talma, W. Dierkes

{"title":"Molecular Layer Deposition (MLD) of a Blocked Mercapto Silane on Precipitated Silica","authors":"S. Kim, J. R. van Ommen, D. L. Zara, N. Courtois, J. Davin, C. Recker, J. Schoeffel, A. Blume, A. Talma, W. Dierkes","doi":"10.1055/s-0043-1761310","DOIUrl":"https://doi.org/10.1055/s-0043-1761310","url":null,"abstract":"Chemically modified silica is widely used as a reinforcing filler in elastomers. The modification is generally done in situ while preparing the rubber. However, in order to increase the efficiency and facilitate the mixing process, the silica can be pre-treated by a 2-step molecular layer deposition. The precursors for the modification are 3-mercaptopropyl-triethoxysilane (MPTES) and octanoyl chloride (OC) to react with MPTES and form a blocked silane. The precipitated silica nanofiller was successfully treated with MPTES and showed a self-limiting behavior: saturation occurred at 2.7%. Furthermore, DRIFTS (diffuse reflectance infrared Fourier transform spectroscopy) analysis confirmed the successful deposition of MPTES on the silica surface by showing the -SH peak that appeared after the reaction of MPTES and silica. In the second step, OC was introduced to form a thioester on the surface of the MPTES-treated silica, controlling the reactivity of the mercapto group from MPTES by blocking it to prevent a negative influence on the processing behavior of the rubber. Thermogravimetric analysis (TGA), Fourier-transform infrared spectroscopy, and X-ray photoelectron spectroscopy (XPS) analytical results confirmed the deposition of the blocked mercapto silane on the silica. TGA results demonstrated the self-limiting behavior of OC, and DRIFTS and XPS proved the thioester formation. A thioester peak after the 2nd reaction step with OC appeared. At the same time, the disappearance of the -SH signal from the MPTES was observed, indicating the formation of the blocked mercapto silane structure. Transmission electron microscopy results showed that the treated silica has a well-distributed carbon and sulfur deposition after MPTES/OC treatment.","PeriodicalId":93348,"journal":{"name":"Organic Materials","volume":"5 1","pages":"139 - 147"},"PeriodicalIF":0.0,"publicationDate":"2022-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43805842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0