Article
Chemistry, Physical
Laura Faba, Juan Gancedo, Jorge Quesada, Eva Diaz, Salvador Ordonez
Summary: This study explores a combined strategy using acid and basic catalysts to enhance the selectivity and efficiency of acetone transformation into mesitylene. After comparing five representative materials, a double bed of Al-MCM-41 and TiO2 is proposed as the optimal approach, resulting in a significant increase in mesitylene productivity through observed synergistic effects.
Article
Chemistry, Multidisciplinary
Amir Moualhi, Agustin Rios De Anda, Henri Vahabi, Saber Chatti, Houyem Abderrazak, Estelle Renard
Summary: A sustainable alternative method for synthesizing fully biobased and nonharmful resoles as alternatives to current commercially available and hazardous phenol-formaldehyde resins was proposed. The resoles, synthesized by condensation of resorcinol with different aldehydes, showed more sustainable and environmental-friendly properties.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Polymer Science
Taichi Shibatsuka, Takehiro Kawauchi
Summary: Novel polyfunctional benzoxazine monomers containing allyl, ethynyl, and furfuryl groups were synthesized and their thermoset films were investigated. The introduction of crosslinkable groups significantly increased the mechanical and thermal properties of the films.
Article
Agricultural Engineering
Maryam Arefmanesh, Saeid Nikafshar, Emma R. Master, Mojgan Nejad
Summary: This study used acetone fractionation to increase the homogeneity of softwood kraft lignin and develop new products. The acetone soluble and insoluble fractions were analyzed for their elemental composition, chemical structure, and thermal properties. The acetone soluble fraction showed an increase of 24% in phenolic hydroxyl content. It was used to replace phenol in phenolic resin, resulting in a higher adhesion strength. The acetone insoluble fraction, on the other hand, was used to replace petroleum-based polyol in polyurethane resin, with the help of a bio-derived solvent. Tailoring the structure of kraft lignin through solvent fractionation allowed for the replacement of two major petrochemicals in resin formulations, which would otherwise be challenging due to the heterogeneity of softwood kraft lignin.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Polymer Science
Youpei Du, Yu Xia, Zhenhua Luo, Wenjie Yuan, Kongli Xu, Qian Wang, Heng Zhou, Ying Guo, Hao Li, Tong Zhao
Summary: In this study, a hybrid phenolic resin containing silicon and boron was synthesized through addition-condensation reactions, resulting in improved residual weight at high temperatures. The hybrid resin achieved uniform dispersion of hybrid elements at the molecular level and addition curing via the presence of vinyl groups. Characterization using multiple techniques provided a detailed understanding of the synergistic effects of boron-silicon modified phenolic resin.
POLYMER DEGRADATION AND STABILITY
(2021)
Article
Biochemistry & Molecular Biology
Luis A. Gonzalez, Sara Robledo, Yulieth Upegui, Gustavo Escobar, Wiston Quinones
Summary: American trypanosomiasis (Chagas disease) caused by Trypanosoma cruzi parasite is a severe health problem in Latin America, with reports of spreading to Europe, North America, Japan, and Australia. Lack of vaccine availability calls for discovery of new molecules for drug development. In this study, 26 compounds were synthesized to determine their effect on trypanocidal activity, with one compound showing promising results against a resistant strain of T. cruzi.
Article
Polymer Science
Sara Shafiee, Leila Bazli, Mohammad Karrabi, Mir Hamid Reza Ghoreishy, Milad Bazli
Summary: The effects of NBR polarity and organoclay addition on the properties of an NBR/phenolic resin blend were investigated. It was found that good distribution of nanoparticles and compatibility between NBR and phenolic resin improved the rheological and tensile properties. The addition of organoclay increased the tensile strength of the blends, while increasing nanoparticle concentration reduced the deterioration in tensile properties and Young's modulus.
Article
Chemistry, Applied
Valeriia Korolova, Oleg Kikhtyanin, Evgeniya Grechman, Vincenzo Russo, Johan Warna, Dmitry Yu. Murzin, David Kubicka
Summary: The influence of temperature, furfural to acetone ratio, and catalyst loading on the furfural condensation with acetone over hydrotalcite materials was studied. Concentration profiles showed limiting conversion values depending on the catalyst amounts, and thermodynamic calculations demonstrated the absence of any thermodynamic restrictions, indicating catalyst deactivation, especially at lower catalyst concentrations. Deactivation is more likely to affect the first step of aldol condensation rather than subsequent dehydration. A kinetic model, including catalyst deactivation, was developed and confirmed an adequate description of the experimental data with the advanced model.
Review
Chemistry, Applied
Qifu Lin, Dingqiao Yang
Summary: Oxa(aza)benzonorbornadienes are important synthetic intermediates and building blocks in organic synthesis. The transition-metal-catalyzed ring-retentive addition reactions of oxa(aza)bicyclic alkenes have attracted increasing attention. This review summarizes and discusses numerous efficient protocols for the facile and efficient transformations of oxa(aza)benzonorbornadienes to valuable adducts.
ADVANCED SYNTHESIS & CATALYSIS
(2023)
Article
Engineering, Multidisciplinary
Cheng Gao, Ming Li, Chenjie Zhu, Youqin Hu, Tao Shen, Mengyu Li, Xingxiang Ji, Gaojin Lyu, Wei Zhuang
Summary: In this study, HBr was used as a catalyst to enhance the reactivity of lignin, which was then directly used to prepare phenolic foams without purification. Under optimized conditions, the phenolic hydroxyl content increased while the methoxyl group content dropped, leading to improved performance of the modified lignin-based phenolic resin compared to unmodified resin.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Chemistry, Organic
Shun Ohno, Mina Ito, Shiho Aoki, Kohei Inomata
Summary: In this study, regio- and stereoselective nucleophilic addition reactions of Swaminathan ketone and its methylated analog were reported. Generic organometallic reagents were used to achieve selective additions at the conjugated carbonyl group, resulting in a range of tert-alcohol products with high stereoselectivity. Furthermore, the regioselectivity problem in the allylation reaction was solved using organocopper reagents.
TETRAHEDRON LETTERS
(2023)
Article
Polymer Science
Eduard Tokar, Mikhail Tutov, Pavel Kozlov, Arseni Slobodyuk, Andrei Egorin
Summary: The research demonstrated that the efficiency and stability of RFR in removing Cs-137 depend on the resorcinol/formaldehyde molar ratio and solidification temperature. The sample with the resorcinol/formaldehyde molar ratio of 1.8/2.2 and solidified at 210 degrees Celsius showed the best sorption-selective characteristics and chemical stability.
Article
Chemistry, Applied
Yong Xiang, Yun Liu, Xiaoyuechuan Ma, Wencai Bai, Li Xu, Chunmei Cao, Guoji Liu
Summary: In this study, a new adsorbent RFT was synthesized and exhibited outstanding Au(III) adsorption performance. RFT, with abundant phenolic hydroxyl and thiourea functional groups, efficiently adsorbed Au(III) and also served as a catalyst for the reduction of hazardous substances.
REACTIVE & FUNCTIONAL POLYMERS
(2022)
Article
Energy & Fuels
Chen Zhao, Xinyao Wang, Sheng Ye, Jian Liu
Summary: This study reports the synthesis of graphene quantum dots (GQDs) modified resorcinol-formaldehyde (RF) composite, which enhances the photocatalytic efficiency by improving charge separation.
Article
Chemistry, Organic
Qiuyu Yu, Jinghang Zhang, Fan Wu, Xiaoqin Liu, Chang Wang, Jinpeng Zhang, Liangce Rong
Summary: A novel and facile methodology involving propargyl chalcones and arylsulfonyl chloride was used to synthesize sulfonated benzo[b]oxepinone and chromane derivatives under laboratory conditions. The readily available starting materials, commercialized reagents, and simple reaction conditions make this synthetic strategy attractive and with significant application values.
JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Organic
Shunsuke Sasaki, Satoshi Suzuki, Kazunobu Igawa, Keiji Morokuma, Gen-ichi Konishi
JOURNAL OF ORGANIC CHEMISTRY
(2017)
Article
Chemistry, Multidisciplinary
Yuki Arakawa, Hiroki Kuwahara, Masatoshi Tokita, Gen-ichi Konishi, Hideto Tsuji
MOLECULAR CRYSTALS AND LIQUID CRYSTALS
(2018)
Review
Chemistry, Organic
Yuki Arakawa, Gen-ichi Konishi
JOURNAL OF SYNTHETIC ORGANIC CHEMISTRY JAPAN
(2018)
Article
Chemistry, Organic
Amir Sharidan Sairi, Gen-ichi Konishi
ASIAN JOURNAL OF ORGANIC CHEMISTRY
(2019)
Article
Chemistry, Multidisciplinary
Riki Iwai, Satoshi Suzuki, Shunsuke Sasaki, Amir Sharidan Sairi, Kazunobu Igawa, Tomoyoshi Suenobu, Keiji Morokuma, Gen-ichi Konishi
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2020)
Review
Chemistry, Multidisciplinary
Satoshi Suzuki, Shunsuke Sasaki, Amir Sharidan Sairi, Riki Iwai, Ben Zhong Tang, Gen-ichi Konishi
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2020)
Article
Chemistry, Multidisciplinary
Li-Hsiang Wang, Yuki Nagashima, Masato Abekura, Hidehiro Uekusa, Gen-ichi Konishi, Ken Tanaka
Summary: A high-yielding new route to substituted cycloparaphenylenes has been developed, demonstrating definite aggregation-induced emission properties. The synthesized compound is a novel AIE-active cycloarylene that differs from well-known AIE luminogens such as tetraphenylethene and 1,2,4,5-tetraphenylbenzene skeletons. Single-crystal X-ray diffraction analyses reveal highly ordered packing structures.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Yoshimichi Shimomura, Kazunobu Igawa, Shunsuke Sasaki, Noritaka Sakakibara, Raita Goseki, Gen-ichi Konishi
Summary: By introducing propylene moieties as bridges, we have successfully designed compact crystalline dyes and suppressed intermolecular electronic interactions, achieving monomeric emission.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Inorganic & Nuclear
Ryuichi Shimogawa, Yuki Muroi, Naoya Noguchi, Gen-ichi Konishi, Toshiro Takao, Hiroharu Suzuki
Summary: This study investigates the thermal and photo-induced reactions of [Cp*Ru(mu- H)4RuCp*] with benzene and its derivatives, revealing the high tolerance and selectivity of the photo-induced reaction.
Article
Chemistry, Multidisciplinary
Yoshimichi Shimomura, Gen-ichi Konishi
Summary: Multiple emission colors in solid-state organic fluorophores are important for improving light-emitting devices/materials. In this study, we synthesized two derivatives of di-bridged-distyrylbenzene that showed bright red-orange and red fluorescence in the solid state, respectively. The introduction of bridging structures and the suppression of intermolecular electronic interactions were responsible for the enhanced solid-state emissions.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Polymer Science
Yoshimichi Shimomura, Masatoshi Tokita, Atsuya Kawamura, Junji Watanabe, Gen-ichi Konishi
Summary: This study aims to lower the isothermalization temperature (T-i) of poly(pentylene 4,4’-bibenzoate) (BB-5) and enhance the processability of poly(pentylene 4,4’-terphenyldicarboxylate) (T-5) compounds. Six fluorinated BB-5 (F-BB-5) compounds with T-i values at least 35°C lower than that of BB-5 are synthesized. Fluorinated T-5 (F-T-5) compounds exhibit isotropic phases before thermal decompositions, unlike T-5. Moreover, F-BB-5 and F-T-5 form unexpected crystalline and higher-order smectic phases, expanding the possibilities of low-molecular-weight liquid crystals.
Review
Chemistry, Multidisciplinary
Haoran Wang, Qiyao Li, Parvej Alam, Haotian Bai, Vandana Bhalla, Martin R. Bryce, Mingyue Cao, Chao Chen, Sijie Chen, Xirui Chen, Yuncong Chen, Zhijun Chen, Dongfeng Dang, Dan Ding, Siyang Ding, Yanhong Duo, Meng Gao, Wei He, Xuewen He, Xuechuan Hong, Yuning Hong, Jing-Jing Hu, Rong Hu, Xiaolin Huang, Tony D. James, Xingyu Jiang, Gen-ichi Konishi, Ryan T. K. Kwok, Jacky W. Y. Lam, Chunbin Li, Haidong Li, Kai Li, Nan Li, Wei-Jian Li, Ying Li, Xing-Jie Liang, Yongye Liang, Bin Liu, Guozhen Liu, Xingang Liu, Xiaoding Lou, Xin-Yue Lou, Liang Luo, Paul R. McGonigal, Zong-Wan Mao, Guangle Niu, Tze Cin Owyong, Andrea Pucci, Jun Qian, Anjun Qin, Zijie Qiu, Andrey L. Rogach, Bo Situ, Kazuo Tanaka, Youhong Tang, Bingnan Wang, Dong Wang, Jianguo Wang, Wei Wang, Wen-Xiong Wang, Wen-Jin Wang, Xinyuan Wang, Yi-Feng Wang, Shuizhu Wu, Yifan Wu, Yonghua Xiong, Ruohan Xu, Chenxu Yan, Saisai Yan, Hai-Bo Yang, Lin-Lin Yang, Mingwang Yang, Ying-Wei Yang, Juyoung Yoon, Shuang-Quan Zang, Jiangjiang Zhang, Pengfei Zhang, Tianfu Zhang, Xin Zhang, Xin Zhang, Na Zhao, Zheng Zhao, Jie Zheng, Lei Zheng, Zheng Zheng, Ming-Qiang Zhu, Wei-Hong Zhu, Hang Zou, Ben Zhong Tang
Summary: This review provides a comprehensive summary of the applications of aggregation-induced emission (AIE) luminogens in biological imaging, dynamic physiological processes, disease diagnosis and treatment, and specific analyte detection and monitoring. The review also discusses critical issues and future directions, aiming to promote the development of AIE in the fields of life and health.
Review
Chemistry, Multidisciplinary
Haoran Wang, Qiyao Li, Parvej Alam, Haotian Bai, Vandana Bhalla, Martin R. Bryce, Mingyue Cao, Chao Chen, Sijie Chen, Xirui Chen, Yuncong Chen, Zhijun Chen, Dongfeng Dang, Dan Ding, Siyang Ding, Yanhong Duo, Meng Gao, Wei He, Xuewen He, Xuechuan Hong, Yuning Hong, Jing-Jing Hu, Rong Hu, Xiaolin Huang, Tony D. James, Xingyu Jiang, Gen-ichi Konishi, Ryan T. K. Kwok, Jacky W. Y. Lam, Chunbin Li, Haidong Li, Kai Li, Nan Li, Wei-Jian Li, Ying Li, Xing-Jie Liang, Yongye Liang, Bin Liu, Guozhen Liu, Xingang Liu, Xiaoding Lou, Xin-Yue Lou, Liang Luo, Paul R. McGonigal, Zong-Wan Mao, Guangle Niu, Tze Cin Owyong, Andrea Pucci, Jun Qian, Anjun Qin, Zijie Qiu, Andrey L. Rogach, Bo Situ, Kazuo Tanaka, Youhong Tang, Bingnan Wang, Dong Wang, Jianguo Wang, Wei Wang, Wen-Xiong Wang, Wen-Jin Wang, Xinyuan Wang, Yi-Feng Wang, Shuizhu Wu, Yifan Wu, Yonghua Xiong, Ruohan Xu, Chenxu Yan, Saisai Yan, Hai-Bo Yang, Lin-Lin Yang, Mingwang Yang, Ying-Wei Yang, Juyoung Yoon, Shuang-Quan Zang, Jiangjiang Zhang, Pengfei Zhang, Tianfu Zhang, Xin Zhang, Xin Zhang, Na Zhao, Zheng Zhao, Jie Zheng, Lei Zheng, Zheng Zheng, Ming-Qiang Zhu, Wei-Hong Zhu, Hang Zou, Ben Zhong Tang
Summary: This review provides a comprehensive summary of the advantages and applications of aggregation-induced emission (AIE) luminogens in imaging of biological structure, dynamic physiological processes, disease diagnosis and treatment, as well as detection and monitoring of specific analytes. It also discusses future directions to promote research and development in the fields of life and health.
Article
Chemistry, Multidisciplinary
Yuki Arakawa, Shunsuke Sasaki, Kazunobu Igawa, Masatoshi Tokita, Gen-ichi Konishi, Hideto Tsuji
NEW JOURNAL OF CHEMISTRY
(2020)
Article
Chemistry, Multidisciplinary
Amir Sharidan Sairi, Kohei Kuwahara, Shunsuke Sasaki, Satoshi Suzuki, Kazunobu Igawa, Masatoshi Tokita, Shinji Ando, Keiji Morokuma, Tomoyoshi Suenobu, Gen-ichi Konishi
