Article
Chemistry, Applied
Gonzalo Miyagusuku-Cruzado, Danielle M. Voss, Thania N. Ortiz-Santiago, Yesen Cheng, M. Monica Giusti
Summary: This study evaluated two vinylphenols as cofactors for the formation of pyranoanthocyanins in food colorants. The results showed that the synthesis efficiency was highest when the molar ratio of vinylphenols to precursors was 1:5 or 1:10. The formation process followed a nucleophilic addition and aromatization mechanism. Overall, vinylphenols were more efficient than hydroxycinnamic acids in pyranoanthocyanin formation.
Article
Energy & Fuels
Haiping Yang, Meng Gong, Wei Chen, Yang Fang, Yingquan Chen, Xianhua Wang, Hanping Chen
Summary: The conversion of lignin into valuable chemicals, such as 4-vinylphenol, is essential for its high-value utilization. This study proposed a simple method to produce 4-vinylphenol through lignin pyrolysis under NH3 atmosphere, which increased bio-oil and gaseous product yield. NH3 promoted formation of phenols and significantly increased the yield of H2 while decreasing CH4 and CO2 yield. The formation mechanism of 4-vinylphenol involves hydrogen abstraction, crack stage, and significant reduction of energy barrier.
Article
Polymer Science
Alexandros E. Alexakis, Thayanithi Ayyachi, Maryam Mousa, Peter Olsen, Eva Malmstrom
Summary: To meet the increasing demand for biobased materials, lignin-derived ferulic acid was used to prepare functional monomers for radical polymerizations. These monomers were polymerized to produce homo- and copolymers with a wide range of thermal properties, showing potential in thermoplastic applications. Additionally, monomers derived from ferulic acid were crosslinked to produce thermosets with different crosslinking densities for thermosetting applications.
Article
Biotechnology & Applied Microbiology
Alberto Rodriguez, Jamie A. Meadows, Ning Sun, Blake A. Simmons, John M. Gladden
Summary: The study found that C. glutamicum is a suitable host for high-level production of 4VP. Using undecanol as an overlay can enhance the 4VP titers and C. glutamicum shows good tolerance to CA. Further bioprocess engineering strategies can be explored to optimize the production, extraction, and purification of 4VP from lignin.
MICROBIAL CELL FACTORIES
(2021)
Article
Engineering, Environmental
Zhi Liu, Tiantian Dong, Pengzhou Mu, Huanrui Zhang, Wei Liu, Guanglei Cui
Summary: Increasing the operating voltage is an effective way to improve the energy density of lithium batteries, but it often leads to rapid capacity fade. To address this issue, this study develops a binder with reactive oxygen scavenging effect, which improves the compatibility of the cathode/electrolyte interface.
CHEMICAL ENGINEERING JOURNAL
(2022)
Review
Medicine, General & Internal
Natalia Jarzebska, Ekaterina S. Karetnikova, Alexander G. Markov, Michael Kasper, Roman N. Rodionov, Peter M. Spieth
Summary: Radiation-induced pulmonary fibrosis is a common complication of thoracic tumor radiation therapy, with current therapeutic options being limited to supportive measures like steroids but with unsatisfactory efficacy. Recent studies have shown that lung fibrosis development is a dynamic and complex process involving various cellular and molecular interactions.
FRONTIERS IN MEDICINE
(2021)
Article
Chemistry, Physical
T. Zaharescu, C. Banciu
Summary: The stabilization efficiency of reduced graphene oxide (rGO) on the gamma-irradiated styrene-isoprene-styrene copolymer (SIS) matrix is studied by chemiluminescence. The results show that the presence of inorganic phase in low concentrations can protect the polymer against oxidation. The characteristic kinetic parameters of degradation remain unchanged compared to the pristine polymer. The study also demonstrates that rGO can delay thermal and radiochemical oxidation, especially at higher loadings. Coupling rGO with rosemary extract further enhances the durability of the polymer.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Biochemistry & Molecular Biology
Naoki Kitaoka, Taiji Nomura, Shinjiro Ogita, Yasuo Kato
Summary: BaPAD-transformed cells in Bamboo (Pn) accumulated new metabolites, 4-vinylphenol beta-primeveroside and 4-vinylguaiacol beta-primeveroside, which were produced through sequential glycosylation.
APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY
(2021)
Article
Chemistry, Analytical
Yang Li, Bin Hu, Hao Fu, Zhen-xi Zhang, Zi-teng Guo, Guan-zheng Zhou, Ling-jun Zhu, Ji Liu, Qiang Lu
Summary: A barium-magnesium mixed metal oxide catalyst (BaMg-MMO) was developed for the selective production of 4-vinylphenol (4-VP) from bagasse fast pyrolysis. The effects of various parameters on the reaction were investigated, and BaMg-MMO showed promising catalytic performance in the formation of 4-VP during the fast pyrolysis of bagasse.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Chemistry, Multidisciplinary
Shusuke Ochi, Zining Zhang, Ying Xia, Guangbin Dong
Summary: In this study, a unique one-carbon ring-expansion strategy was developed to synthesize multi-substituted 2-indanones from benzocyclobutenones and styrene-type olefins. The use of a cationic ligandless rhodium catalyst enabled high reactivity and selectivity towards the (4+1) product. The method exhibited broad functional group tolerance and scalability.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Analytical
Murali Mohana Rao Singuru, Wei-Ching Liao, Min-Chieh Chuang
Summary: This article describes the design and synthesis of a DNA capsule capable of rapidly responding to environmental genotoxins. The results show that the capsule efficiently captures and releases specific toxins, making it a promising tool for monitoring environmental genotoxins.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Multidisciplinary
Adnan Ali, Sosiawati Teke, Ghayas Uddin Siddiqui, Young Sun Mok
Summary: We fabricated hybrid composite poly 4-vinlyphenol (PVPh)/graphene thin film using electrospray atomization deposition technique. The dielectric behavior of the PVPh/graphene hybrid composite was investigated and compared to PVPh. The results showed that the PVPh/graphene thin film exhibited better dielectric properties, especially at higher frequencies.
Article
Materials Science, Multidisciplinary
Kui Hu, Caihua Yu, Qilin Yang, Yujing Chen, Guixiang Chen, Rong Ma
Summary: This research aims to clarify the interaction mechanism between graphene oxide and styrene-butadiene-styrene modified asphalt, providing multi-scale insights for the design of modified asphalt polymer materials through experimental analysis and molecular dynamic simulations.
MATERIALS & DESIGN
(2021)
Article
Polymer Science
Jing Li, Susu Xing, Zibo Lin, Zhenxia Zhao, Hao Kong, Yu Liu, Panpan Zhang
Summary: A composite graphene oxide (GO) modifier was prepared by co-deposition of polydopamine (PDA) and hexadecyltrimethoxysilane (HDTMS) to enhance the interfacial interaction between GO and asphalt. The addition of PDA/HDTMS composite GO modifier improved the ductility, high-temperature stability, and viscosity of asphalt. Compared to GO composite SBS modified asphalt binder, DH-GO/SBSMB exhibited higher mechanical properties, including increased softening point, decreased penetration degree, and increased elongation. DSR, MSCR, and RV tests confirmed that DH-GO/SBSMB showed higher high-temperature stability, plasticity, and viscosity, meeting the requirements of asphalt construction specifications.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Biochemistry & Molecular Biology
Debajit Chaudhury, Utsav Sen, Bijay Kumar Sahoo, Nagesh N. Bhat, K. Sudeep Kumara, N. Karunakara, Siddhartha Biswas, P. Sudheer Shenoy, Bipasha Bose
Summary: This study simulated exposure of BALB/c mice in High Background Radiation Area and found that radio disintegration led to inhalation hazard and damages to distant organs like liver and kidney, along with causing damages to multiple systems.
CHEMICO-BIOLOGICAL INTERACTIONS
(2022)