Article
Polymer Science
Adria Roig, Aina Petrauskaite, Xavier Ramis, Silvia De la Flor, Angels Serra
Summary: This study developed new acylhydrazone vitrimeric-type materials with high T-g and fast relaxation through imine metathesis. These materials showed good thermomechanical properties, high thermal stability, and the ability to be recycled and self-healed.
Review
Biochemistry & Molecular Biology
Silvia Pisani, Ida Genta, Tiziana Modena, Rossella Dorati, Marco Benazzo, Bice Conti
Summary: Shape-Memory Polymers (SMPs) are smart materials that can modify their size, shape, stiffness and strain in response to external stimuli. SMP nanofibers have great potential for biomedical applications.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Materials Science, Multidisciplinary
Liuxia Ruan, Junwei Tong, Feifei Luo, Yanzhao Wu, Gaowu Qin, Xianmin Zhang
Summary: Resistive memory devices based on metal-free phthalocyanine and sandwiched dyphthalocyanine have been successfully prepared and their performance is affected by interlayer thickness and crystalline structure. The devices exhibit high ON/OFF current ratio and long retention ability, and the electrical conduction behavior follows the space charge limited conduction mechanism. This study is important for designing advanced resistive memory devices and understanding their working mechanism.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Materials Science, Composites
Caiying Bo, Shuchang Guo, Ye Sha, Liang Yuan, Lihong Hu, Puyou Jia, Yonghong Zhou, Guodong Feng, Meng Zhang
Summary: The development of reprocessable and multi-stimulus-responsive shape memory benzoxazines and their carbon nanotubes composites on intelligence sensor is challenging. The cardanol-based benzoxazines exhibit multiple responses such as heat, microwave, light, and water, and the addition of dioxaborolanes enhances their tensile strength. Moreover, the shape memory cardanol-based benzoxazine/carbon nanotubes composite shows sensitivity to pressure and bending, as well as high stability and recoverability.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Fang-Zhou Wang, Hong-Qin Wang, Wen-Tong Gao, Cheng-Hui Li
Summary: The stiff polyurea described in the study has high mechanical strength and can be reprocessed and healed under mild conditions. It demonstrates a small energy barrier for bond exchange and high kinetics speed constant, which are attributed to the high reactivity and steric hindrance of piperazine groups. These properties make it attractive for sustainable industrial applications.
MATERIALS CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Multidisciplinary
Libo Miao, Yegang Lu, Yu Zhang, Wei Sun, Ziyang Hu
Summary: In this study, the influence of thickness reduction on the phase-change behavior of GeTe films was investigated by studying both uncovered and Si3N4-covered GeTe films. The results showed that with decreasing film thickness, the resistance, optical band gap, and thermal stability of GeTe films were improved. The coverage of Si3N4 further enhanced the thermal stability and resistance drift of GeTe.
CRYSTAL GROWTH & DESIGN
(2022)
Article
Polymer Science
Zhongxin Zhou, Zhonglian Wu, Yongchuan Xu, Yingyi Lu, Jun Yang, WeiGuo Zhu, Yu Liu
Summary: In this paper, a conjugated polymer, PBDTTS-2FClQx, was synthesized and employed as an electron donor polymer in ternary organic solar cells. The optimized ternary OSC exhibited a significantly enhanced power conversion efficiency of 13.59%, with a 9.5% improvement compared to the control binary OSC. Moreover, the optimal ternary device showed much better stability. This study suggests that the Qx-type copolymer with asymmetric side-chains is a promising donor material for efficient and stable OSCs.
Article
Chemistry, Multidisciplinary
Josefine Meurer, Julian Hniopek, Thomas Baetz, Stefan Zechel, Marcel Enke, Juergen Vitz, Michael Schmitt, Juergen Popp, Martin D. Hager, Ulrich S. Schubert
Summary: A new shape-memory polymer is presented, utilizing two different metal complexes to achieve high strain fixity rates and strain recovery rates, with the mechanism revealed through various techniques such as Raman spectroscopy.
ADVANCED MATERIALS
(2021)
Article
Construction & Building Technology
Xiaoli Liu, Ming Qu, Alan Phong Tran Nguyen, Neil R. Dilley, Kazuaki Yazawa
Summary: The research investigates thermoelectric cement candidates for building envelope applications, studying the impact of additives graphite and MnO2, as well as two different fabrication methods (wet-mixing and dry-mixing) on thermoelectric performance. The DynaCool Physical Properties Measurement System was used to test the thermoelectric properties of candidates, revealing that the thermoelectric cement with 10% graphite and 5% MnO2 has the highest ZT value at 350 K.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Review
Biochemistry & Molecular Biology
Seyyed Mojtaba Mousavi, Seyyed Alireza Hashemi, Sonia Bahrani, Khadije Yousefi, Gity Behbudi, Aziz Babapoor, Navid Omidifar, Chin Wei Lai, Ahmad Gholami, Wei-Hung Chiang
Summary: In this review, the unique properties of intrinsically conducting polymer (ICP) in biomedical engineering fields, particularly polythiophene and its derivatives, are highlighted for their potential applications in biosensors, gene delivery, and other medical uses. Various experiments have been conducted to study the behavior and effects of thiophene derivatives when combined with different materials, leading to the development of novel compounds with improved functions for medical applications. The customization of polythiophenes with different derivatives shows promise for creating more efficient and effective biomedical engineering materials in the future.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Materials Science, Multidisciplinary
Shixun Hu, Qing Shao, Juan Li, Mingti Wang, Shangshi Huang, Hao Yuan, Qi Li, Jinliang He
Summary: In this paper, the TSDC spectrum of MMA-grafted polypropylene is analyzed quantitatively using a TSDC peak separating algorithm. The effectiveness and credibility of the separated trap peaks and extracted trap parameters are verified by an experimental peak-separating method. The trap analysis shows that grafting MMA introduces a new high-depth trap peak and deepens the intrinsic trap of polypropylene.
Article
Chemistry, Physical
Shihao Chen, Minghao Dong, Yuanqing Bai, Yuting Chen, Yuang Fu, Lin Shao, Xinhui Lu, Chunchen Liu, Kai Zhang, Hongbin Wu, Fei Huang
Summary: In this study, two novel acceptor-donor-acceptor (A-D-A) conjugated molecules, ABBT-BO and ABBT-DT, using dithieno-1,4-azaborine as the core D unit have been designed and synthesized. Both molecules exhibited excellent solubility, strong and broad absorption and appropriate energy levels, enabling them to be promising candidates for non-fullerene acceptors (NFAs). The PM6:ABBT-BO based OSCs achieved a power conversion efficiency (PCE) of 10.07%, the highest reported efficiency for NFAs featuring BN-heteroarenes.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Engineering, Electrical & Electronic
Akram Azadi, Hamid Reza Shamlouei
Summary: In this research, new nanobuds were designed by grafting B12N12 nanocluster on C50 fullerene, and the possibility of their formation was investigated using DFT calculation methods. The stability of the nanobuds was confirmed through structure optimization, IR frequency test, and adhesion energy calculation. The designed nanobuds exhibited better electrical and optical properties compared to the parent molecules.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2023)
Article
Chemistry, Applied
Lei Wang, Mengdi Liang, Yang Fang, Jun Yin, Jungang Jiang, Yifan Zhang, Haiping Yang
Summary: Researchers synthesized two different guaiacyl-dehydrogenation polymers (G-DHPs) as models for native lignin and analyzed their chemical structures and pyrolysis characteristics. The study found that one of the models was more similar to real lignin and revealed its pyrolysis pathway.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Engineering, Chemical
Shiyuan Zhou, Peiyang Gu, Haibo Wan, Yutao Zhu, Najun Li, Dongyun Chen, Antonio Marcomini, Qingfeng Xu, Jianmei Lu
Summary: Rigid triptycene- and pentiptycene-based monomers were polymerized to fabricate crosslinked porous architectures P1 and P2, which exhibit good thermal stability and efficient adsorption performance for phenolic organic pollutants. These polymers show highly selective adsorption capacity towards the pollutants.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Polymer Science
Kosuke Ogita, Naomasa Yomogita, Sultan Otep, Tsuyoshi Michinobu
Summary: Defect-free and linear polyarylenebutadiynylenes with improved solubility were synthesized through postfunctionalization using a Cu(I)-catalyzed click reaction. The resulting triblock copolymer exhibited higher solubilities in organic solvents while retaining the electronic properties of the original polymer unit.
Article
Chemistry, Multidisciplinary
Waner He, Qian Liu, Sultan Otep, Hidetoshi Matsumoto, Sergei Manzhos, Prashant Sonar, Aung Ko Ko Kyaw, Tsuyoshi Michinobu
Summary: A novel DPP-based conjugated polymer, PDPPy-BDD, was synthesized and showed ambipolar field-effect transistor characteristics with average hole and electron mobilities of 3.5 x 10(-3) and 3.07 x 10(-2) cm(2) V-1 s(-1), respectively. The addition of tetramethylammonium iodide (NMe4I) successfully enhanced both the hole and electron mobilities by promoting stronger interchain pi-pi stackings, weakening face-on packing orientation in the thin film state, and increasing channel conductivities in the OFETs.
CHINESE JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Physical
Zhiqing Xie, Hyungjin Park, SeungJu Choi, Ho-Yeol Park, Thavamani Gokulnath, Hyerin Kim, Jeonghyun Kim, Hak-Beom Kim, In Woo Choi, Yimhyun Jo, Dong Suk Kim, Young-Yong Kim, Seog Young Yoon, Jinhwan Yoon, Yong-Rae Cho, Sung-Ho Jin
Summary: In this study, a thienothiophene pi-bridge was selected as a stabilizer and energy level regulator to synthesize a dopant-free polymer for use as a hole transport material (HTM) in perovskite solar cells (PSCs). The incorporation of the thienothiophene group improved the thermal stability and promoted high charge carrier mobility. The resulting PSC exhibited excellent power conversion efficiency and long-term stability.
ADVANCED ENERGY MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Thavamani Gokulnath, Jeonghyeon Kim, Hyerin Kim, Jeonghyeon Park, Donghyun Song, Ho-Yeol Park, Raja Kumaresan, Young Yong Kim, Jinhwan Yoon, Sung-Ho Jin
Summary: A new nonfullerene acceptor was synthesized and integrated into a ternary system to regulate the blend film morphology, resulting in enhanced device performance. The optimized film morphology improved exciton dissociation, charge transport, and reduced recombination loss and trap-state density. This strategy can enhance the performance of NFA-based organic solar cells.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Review
Nanoscience & Nanotechnology
Chia-Yang Lin, Tsuyoshi Michinobu
Summary: With the development of solar steam generation technology, conjugated photothermal materials have attracted attention due to their advantages over metallic and inorganic materials. This review discusses recent progress in solar steam generation devices based on conjugated organic materials, including their use in fibers, membranes, and porous structures. The design of nanostructures based on nanoarchitectonics is crucial for achieving high steam generation efficiency, and considerations for designing steam absorbers are also discussed.
BEILSTEIN JOURNAL OF NANOTECHNOLOGY
(2023)
Article
Polymer Science
Yijie Jin, Manjusha Joshi, Takuma Araki, Naofumi Kamimura, Eiji Masai, Masaya Nakamura, Tsuyoshi Michinobu
Summary: Novel biomass-based polymers based on PDC were synthesized using Cu(I)-catalyzed azide-alkyne cycloaddition and fully characterized. These PDC-based polymers exhibited high thermal stability and strong adhesive properties to various metal plates, with the highest adhesion to copper. The addition of triazole ring improved the adhesive ability and selectivity of the PDC-based polymers to copper, enhancing their versatility as adhesives.
Article
Instruments & Instrumentation
A. G. Shabalin, M. Zhang, W. Yao, R. Rysov, Z. Ren, D. Lapkin, Y-Y Kim, D. Assalauova, N. Mukharamova, M. Sprung, I. A. Vartanyants, Y. S. Meng, O. G. Shpyrko
Summary: This work presents an approach to determine the 3D position of particles by precisely aligning them at the instrument axis of rotation. In the test experiment, with a 60 mm-thick LiNi0.5Mn1.5O4 battery cathode, the particles were located with a precision of 20 mm in the out-of-plane direction, and the in-plane coordinates were determined with a precision of 1 μm.
JOURNAL OF SYNCHROTRON RADIATION
(2023)
Review
Chemistry, Multidisciplinary
Han Jia, Tsuyoshi Michinobu
Summary: Cellulose-based conductive gels, with their flexibility, biodegradability, and biocompatibility, are considered important candidates for next generation nanoarchitectonics materials. They have been widely studied for various applications including sensors, energy storage devices, energy generators, and actuators and have shown superior performance compared to gels made from petroleum-derived chemicals. This review introduces the general preparation method of cellulose-based conductive gels, presents the latest research results, and provides information for future nanoscience and research studies.
Review
Polymer Science
Tsuyoshi Michinobu
Summary: Research on semiconducting polymers is a multidisciplinary field that requires knowledge in polymer synthesis and electronics applications. Understanding the relationship between chemical structures and physical properties is important for discovering suitable application fields. The author's group initially focused on developing high-performance semiconducting polymers with high charge carrier mobilities in thin film transistors and has recently expanded to polymers that emit light in the near-infrared region.
Article
Chemistry, Multidisciplinary
Dmitry Lapkin, Shweta Singh, Felizitas Kirner, Sebastian Sturm, Dameli Assalauova, Alexandr Ignatenko, Thomas Wiek, Thomas Gemming, Axel Lubk, Knut Mueller-Caspary, Azat Khadiev, Dmitri Novikov, Elena V. Sturm, Ivan A. Vartanyants
Summary: The self-assembly of anisotropic nanocrystals allows for the creation of nanostructured materials with unique structures. This study investigates the impact of polymer chain length on the growth and structure of colloidal crystals, and provides a detailed examination of the self-assembled mesocrystals based on different size and surface functionalization of gold nanoparticles.
Review
Polymer Science
Kosuke Terayama, Satoshi Habuchi, Tsuyoshi Michinobu
Summary: Fluorescence imaging in the second near-infrared region is an effective tool in clinical diagnosis and therapy assessment. Conjugated polymer nanoparticles based on donor-acceptor polymers are promising fluorescent probes with high brightness and low cytotoxicity. This review summarizes the NIR-II fluorescent polymers reported in the past few decades and provides insights into the molecular design of donor-acceptor units for developing high-brightness NIR-II nanoparticles.
JOURNAL OF POLYMER SCIENCE
(2023)
Article
Chemistry, Physical
Mingqian Wang, Chia-Yang Lin, Yoshimitsu Sagara, Tsuyoshi Michinobu
Summary: It has been found that narrow bandgap conjugated polymers containing the TBZ unit exhibit high light absorption and photothermal properties, making them effective materials for solar steam generation.
Article
Chemistry, Multidisciplinary
Han Jia, Sabina Shahi, Lok Kumar Shrestha, Katsuhiko Ariga, Tsuyoshi Michinobu
Summary: With the emergence of the energy crisis and the development of flexible electronics, there is a need to develop new energy supply devices that are flexible, have stable energy storage, and efficient energy transfer. This study introduces carbonized nanospheres into hydrogels to be used as solid electrolytes for supercapacitors, and finds that they act as physical crosslinking points and provide a pathway for ion transport, improving the capacitance and retention of the supercapacitor.
Article
Polymer Science
Han Jia, Ning Xu, Yoshiki Nagai, Marina Doi, Toshiki Sawada, Takeshi Serizawa, Shinji Ando, Satoshi Habuchi, Tsuyoshi Michinobu
Summary: Aggregation-induced emission (AIE) polymers have been extensively studied for their potential applications in developing new polymer nanoparticles or polymer dots (Pdots) with excellent fluorescence properties. We synthesized conjugated copolymers based on carbazole (Cz) and tetraphenylethene (TPE), a common AIEgen, and found that the presence of an ethynylene spacer between Cz and TPE units resulted in aggregation-caused quenching (ACQ) properties. The ethynylene spacer played a critical role in determining the fluorescent properties of the copolymers in solid states.
Article
Optics
Yishai Klein, Alok K. Tripathi, Edward Strizhevsky, Flavio Capotondi, Dario De Angelis, Luca Giannessi, Matteo Pancaldi, Emanuele Pedersoli, Kevin C. Prince, Or Sefi, Young Yong Kim, Ivan A. Vartanyants, Sharon Shwartz
Summary: We present a simple and reliable high-resolution ghost spectroscopy method for x-ray and extreme ultraviolet transient absorption spectroscopy at free-electron laser sources. This method only requires an online spectrometer before the sample and a downstream bucket detector to retrieve the sample response. We validate the method by measuring absorption spectra of silicon-based materials and comparing the results with standard techniques.
