Article
Chemistry, Multidisciplinary
Mathilde Laird, Niklas Herrmann, Naseem Ramsahye, Cedric Totee, Carole Carcel, Masafumi Unno, John R. Bartlett, Michel Wong Chi Man
Summary: This study reports an unprecedented, single isomer styryl-functionalized T-18 POSS, which has been unambiguously identified among nine possible isomers using multinuclear solution NMR, MALDI-MS, FTIR, and computational studies. A ring-strain model was developed to predict the speciation of non-equivalent Si atoms in other T-n compounds, demonstrating its general applicability and usefulness for predicting Si-atom environments.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Polymer Science
Tughan Akbasak, Mehmet Kodal, Olcay Mert, Gueralp Ozkoc
Summary: Researchers are seeking alternative hydrophobic coatings to replace fluorinated chemicals, and polyhedral oligomeric silsesquioxanes (POSS) show potential as environmentally friendly candidates. In this study, hydrophobic cotton and polyester surfaces were created by anchoring Octavinyl POSS (OL-POSS) and Aminopropylisobutyl POSS (AM-POSS) using a one-step dip-coating technique. The use of ultraviolet (UV) radiation with Benzoyl Peroxide (BPO) initiator increased surface roughness and hydrophobicity. The findings suggest that 5% POSS coatings can provide similar or better water absorption duration (WAD) values compared to fluorinated chemicals.
Article
Engineering, Chemical
Yu-Jie Shen, Qing-Ran Kong, Li-Feng Fang, Ze-Lin Qiu, Bao-Ku Zhu
Summary: In this study, a molecular deposition strategy was designed to construct a high-performance nanochannel separation layer for selective separation of small molecules. The use of multifunctional molecules resulted in the creation of a robust and highly permeable composite membrane, which demonstrated excellent stability and rejection of antibiotics. This novel and green strategy provides an efficient way to separate molecules and salt using nanochannel composite membranes.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Polymer Science
Xing Huang, Guomin Song, Jianjun Shi, Jiafei Ren, Ruilu Guo, Chunyuan Li, Guangxin Chen, Qifang Li, Zheng Zhou
Summary: Octa(dimethylethoxysiloxy) POSS (ODES) was successfully synthesized and used as a novel curing agent for preparing RTV silicone rubber (SROD) with improved mechanical, thermal, and optical properties compared to traditional silicone rubber cross-linked by tetraethoxysilane (SRTE).
Article
Electrochemistry
Devaney Ribeiro do Carmo, Murilo Santos Peixoto, Alexsandro dos Santos Felipe, Valmor Roberto Mastelaro, Fernanda dos Santos Franco
Summary: In this study, a polyhedral oligomeric silsesquioxanes (POSS) modified with zinc and ferrocyanide was prepared to create an electroactive nanohybrid material (SZnH) for developing an electrochemical sensor to detect isoniazid. The SZnH-modified graphite paste electrode (GPSZn) demonstrated high sensitivity to isoniazid concentrations, with two linear response ranges from 1.0 x 10(-5) to 1.0 x 10(-3) mol l(-1).
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Polymer Science
Magdalena Lipinska
Summary: The effects of POSS nanoparticles on the properties of biodegradable poly(epsilon-caprolactone) (PCL) were studied. It was found that amine-POSS and Gly-POSS enhanced the mechanical properties of PCL, while HO-POSS facilitated crystallization. TGA analysis showed that the thermal stability of PCL decreased when HO-POSS and Gly-POSS were added.
Article
Chemistry, Applied
Zuzanna Buchwald, Mariusz Szolyga, Joanna Zwolinska, Bogdan Marciniec, Adam Voelkel
Summary: The remineralizing potential of hydroxyapatite has led to its use in dental composites. However, the compatibility between hydroxyapatite and organic compounds is insufficient, resulting in low mechanical properties. Polyhedral oligomeric silsesquioxanes show promise as additives to dental composites, and their modification of hydroxyapatite surfaces improves mechanical properties and reduces water sensitivity.
REACTIVE & FUNCTIONAL POLYMERS
(2022)
Article
Plant Sciences
Gholamreza Gohari, Sima Panahirad, Asghar Mohammadi, Muhittin Kulak, Mohamad Reza Dadpour, Zohreh Mehri Lighvan, Sina Sharifi, Bagher Eftekhari-Sis, Slawomir Szafert, Vasileios Fotopoulos, Ali Akbari
Summary: Salt stress is highly damaging to plants, but the use of nano-engineered particles shows promise in mitigating its effects. In this study, foliar application of Octa-aminopropyl polyhedral oligomeric silsesquioxanes nanoparticles (OA-POSS NPs) improved the growth of sweet basil plants under salt stress by increasing photosynthetic pigment content and triggering antioxidant components.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2023)
Article
Biochemistry & Molecular Biology
Kinga Piorecka, Jan Kurjata, Wlodzimierz A. Stanczyk
Summary: Anthracyclines, commonly used in chemotherapy, have dangerous side effects associated with cardiovascular risks due to their systemic toxicity. The current approach involves modifying them with nanocarriers to selectively release the active species in cancer cells. Six new nanoconjugates were synthesized with polyhedral oligosilsesquioxanes (POSS) as carriers for anthracyclines, equipped with poly(ethylene glycol) (PEG) moieties.
Article
Chemistry, Multidisciplinary
Touseef Amna, Mallick Shamshi Hassan, Mohamed H. El-Newehy, Tariq Alghamdi, Meera Moydeen Abdulhameed, Myung-Seob Khil
Summary: This study evaluated the biocompatibility of POSS-grafted PU nanocomposites for muscle tissue renewal. The addition of POSS nanoparticles improved mechanical and thermal stability as well as biocompatibility, while also enhancing the specific surface area of nanofibers. Further research demonstrated superior cell adhesion and anti-inflammatory potential of the nanocomposites, suggesting high potential for cellular studies and muscle regeneration.
Article
Chemistry, Physical
Wenchao Zhao, Zhen Dong, Long Zhao
Summary: In this report, the cross-linked Vinyl-POSS gel (CVPG) polymer was synthesized for the first time using a facile one-step ionizing radiation method. The structure and composition of the CVPG were characterized, revealing the presence of unreacted vinyl groups which can be further functionalized to modify the properties and broaden the application range of the gel polymer.
RADIATION PHYSICS AND CHEMISTRY
(2022)
Article
Polymer Science
Artur Bukowczan, Konstantinos N. Raftopoulos, Jacek Niziol, Krzysztof Pielichowski
Summary: Molecular mobility and liquid crystalline order formation of liquid crystalline polyurethanes (LCPU) modified by trisilanolphenyl-POSS were studied using various techniques. The addition of POSS did not significantly alter the nanoscale morphology of the LCPU matrix. Liquid crystal phase transitions were confirmed through dielectric and differential scanning calorimetry measurements. The presence of partially cross-linked POSS particles enhanced the material's rubber modulus in dynamic mechanical analysis. Overall, POSS caused a nucleation effect and did not impair LC phase formation.
Article
Nanoscience & Nanotechnology
Haixiang Song, Qiqi Zhang, Yanwei Zhang, Yanfei Wang, Zhongyuan Zhou, Ping Zhang, Bingnan Yuan
Summary: The influence of 3-amino-polyhedral oligomeric silsesquioxane (NH2-POSS) on waterborne polyurethanes (WPU) was studied by synthesizing NH2-POSS modified WPUs. The addition of NH2-POSS improved the dispersion stability and thermal stability of WPU, while also enhancing hydrophobic properties.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2021)
Article
Materials Science, Composites
Xiaodan Li, Wei Huang, Yan Sui, Guanhui Wang, Lin Xiao, Dongxing Zhang
Summary: By adding different amounts of MA0735 into novolac cyanate ester resin, novolac cyanate ester-polyhedral oligomeric silsesquioxane (POSS, MA0735) copolymers were prepared and analyzed for their curing behaviors and properties. The polymer with 0.5% MA0735 showed optimal comprehensive properties, combining heat resistance and impact toughness.
COMPOSITES COMMUNICATIONS
(2021)
Article
Chemistry, Applied
Shubham Kumar Das, Manish Kumar Dinker, Prashant Shripad Kulkarni
Summary: There is a growing demand for functional silica-based porous materials in the market. In this study, a PEG-linked bis-imidazolium chloride silsesquioxane (PIMAILS) was functionalized on polyhedral oligomeric silsesquioxanes (POSS) to create a highly porous ionic liquid adsorbent. The adsorbent exhibited a high surface area and continuous porous structures, making it effective in removing Cr(VI) ions from wastewater.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Organic
Zhi-Chao Cao, Fei-Xian Luo, Wen-Juan Shi, Zhang-Jie Shi
ORGANIC CHEMISTRY FRONTIERS
(2015)
Article
Chemistry, Applied
Wen-Juan Shi, Hong-Wei Zhao, Yang Wang, Zhi-Chao Cao, Li-Sheng Zhang, Da-Gang Yu, Zhang-Jie Shi
ADVANCED SYNTHESIS & CATALYSIS
(2016)
Article
Chemistry, Organic
Yang Wang, Song-Bai Wu, Wen-Juan Shi, Zhang-Jie Shi
Article
Chemistry, Organic
Wen-Juan Shi, Xiao-Lei Li, Zhao-Wei Li, Zhang-Jie Shi
ORGANIC CHEMISTRY FRONTIERS
(2016)
Article
Chemistry, Multidisciplinary
Wen-Juan Shi, Zhang-Jie Shi
CHINESE JOURNAL OF CHEMISTRY
(2018)
Article
Chemistry, Multidisciplinary
Wenjuan Shi, Zhangjie Shi
CHINESE JOURNAL OF CHEMISTRY
(2014)
Article
Chemistry, Organic
Hu Li, Ru-Yi Zhu, Wen-Juan Shi, Ke-Han He, Zhang-Jie Shi
Article
Chemistry, Organic
Mingyu Yang, Xingyu Jiang, Wen-Juan Shi, Qi-Lei Zhu, Zhang-Jie Shi
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.
