Review
Chemistry, Multidisciplinary
Xiaohong Huo, Guanlin Li, Xi Wang, Wanbin Zhang
Summary: Bimetallic catalysis is an efficient strategy for developing new chemical reactions and stereodivergent synthesis, allowing for the preparation of products with different stereoisomers from the same set of starting materials.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Valentina Pelliccioli, Thierry Hartung, Martin Simon, Christopher Golz, Emanuela Licandro, Silvia Cauteruccio, Manuel Alcarazo
Summary: The study reports a highly enantioselective synthesis of 5,13-disubstituted dibenzo[d,d']benzo[1,2-b:4,3-b']dithiophenes, with the last two successive Au-catalyzed intra-molecular alkyne hydroarylation events being crucial for the successful assembly of these helical architectures.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Organic
Futo Morita, Juntaro Nogami, Antonio Junio Araujo Dias, Suzuka Kinoshita, Yuki Nagashima, Ken Tanaka
Summary: The lateral pi-extension of helicenes can lead to interesting physical properties, and in this study, hexabenzocoronene-based [6]helicenes were synthesized via regiodivergent reactions. These [6]helicenes exhibit stable chirality and planar structure, allowing for chiral analysis without the need for chiral additives.
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Organic
Toshiya Nagai, Yinghua Wang, Koichi Hagiwara, Masayuki Inoue
Summary: This article presents a new synthetic route to enantiopure Evoninic acid and discusses its unique structure.
TETRAHEDRON LETTERS
(2022)
Review
Chemistry, Organic
Soumik De, Aritra Kumar Dan, Raghaba Sahu, Debadutta Das
Summary: This review focuses on the role and mechanisms of various catalysts in synthesizing halocyclized products, highlighting the enantioselectivities, diastereoselectivities, and regioselectivities studied in existing literature.
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Nozomi Terada, Keisuke Uematsu, Ryota Higuchi, Yuki Tokimaru, Yosuke Sato, Koji Nakano, Kyoko Nozaki
Summary: The double helicene with a spiro-Si linker exhibits unique optical properties due to the LUMO spiro-conjugation between the two sila[7]helicene units. The two helicene units in the compound are symmetrically and nearly perpendicularly arranged, thanks to the central spirosilabi[fluorene] moiety.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Chemistry, Physical
Daisuke Sakamoto, Isabel Gay Sanchez, Jiri Rybacek, Jaroslav Vacek, Lucie Bednarova, Marketa Pazderkova, Radek Pohl, Ivana Cisarova, Irena G. Stara, Ivo Stary
Summary: This study describes an asymmetric synthesis method for the preparation of optically pure and conformationally locked oxabenzo[5]helicenes. These compounds can be transformed into cycloiridated organometallics and exhibit excellent catalytic performance in asymmetric transfer hydrogenation reactions.
Article
Chemistry, Physical
Blessy Rajan, Ashutosh V. Bedekar
Summary: In this study, several derivatives of aza[5]helicenes were synthesized and characterized, with the introduction of a methyl group in the fjord region providing sufficient conformational rigidity for the formation of stable, resolvable enantiomers. Analyzing dimethyl aza[5]helicene on chiral HPLC columns revealed the presence of resolvable isomers. Compounds 1 and 15 were further characterized using single crystal X-ray diffraction and computational analysis, along with studying their photophysical properties.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Chemistry, Multidisciplinary
Guanghao Huang, Regis Guillot, Cyrille Kouklovsky, Boris Maryasin, Aurelien de la Torre
Summary: A broadly applicable diastereo- and enantioselective inverse-electron-demand Diels-Alder reaction of 2-pyrones and acyclic enol ethers is reported, leading to the synthesis of bridged bicyclic lactones with high yields and enantioselectivities using a copper(II)-BOX catalytic system. Mechanistic studies suggest a stepwise mechanism, and the synthetic potential of the bridged bicyclic lactones is demonstrated through the enantioselective synthesis of polyfunctional cyclohexenes and cyclohexadienes, as well as a carbasugar unit.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Organic
Manvendra Singh, Bryce Gaskins, Daniel R. Johnson, Christopher G. Elles, Zarko Boskovic
Summary: We successfully synthesized a series of complex cycloheptatriene-containing azetidine lactones using two key photochemical reactions. Through ultrafast spectroscopy, we provided evidence for electron transfer from free amines in the excited state and characterized the aza-Yang reaction by studying the dependence of initial reaction rates on photon absorption rates. This study lays the foundation for exploring unexplored chemical space and providing a large quantity of new compounds for research purposes.
JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Polymer Science
Marc Comi, Michael U. Ocheje, Salahuddin Attar, Anthony U. Mu, Bailey K. Philips, Alexander J. Kalin, Konstantinos E. Kakosimos, Lei Fang, Simon Rondeau-Gagne, Mohammed Al-Hashimi
Summary: This study reports the synthesis of novel imide-functionalized polymers based on diselenophene-pyrrole-2,5-dione and diselenophene-phthalimide, and investigates the effect of fused and nonfused diselenophene units on the properties and device fabrication of the polymers. Results show the potential of these polymers as semiconducting materials in organic field effect transistors.
Article
Chemistry, Organic
Erick Martinez-Toto, Mario Ordonez, Juan C. Morales-Solis, Marcos Flores-Alamo
Summary: The diastereoselective synthesis of (2S,5R)-5-methyl-5-(phosphono)-proline, a phosphoproline derivative from L-pyroglutamic acid, is reported. The key feature of this method is the use of chiral cyclic imines as intermediates and the selective nucleophilic addition of phosphites. The target compound is obtained through cleavage and hydrolysis reactions.
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Applied
Byungjun Kim, Sukwoo Lee, Sarah Yunmi Lee
Summary: In this study, a new method was reported to successfully promote the catalytic asymmetric Diels-Alder reactions using a chiral catalyst in conjunction with a chiral isothiourea catalyst or a Bronsted acid, resulting in the synthesis of densely functionalized cyclohexenes with multiple stereocenters.
ADVANCED SYNTHESIS & CATALYSIS
(2023)
Review
Chemistry, Organic
Gerardo H. Morales-Monarca, Dino Gnecco, Joel L. Teran
Summary: This Review provides a comprehensive overview of the chemistry of N-acyl-1,3-oxazolidines, highlighting their versatile applications in asymmetric synthesis and the synthesis of bioactive molecules and natural products.
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Organic
Zhaosheng Liu, Shuai Zhong, Xiaochen Ji, Guo-Jun Deng, Huawen Huang
Summary: A metal- and additive-free photoredox cyclization of N-arylacrylamides for the concise formation of dihydroquinolinones was reported, using sustainable visible light and the organic light-emitting molecule 4CzIPN as the efficient photocatalyst. The reaction system showed exclusive 6-endo-trig cyclization selectivity with generally good yields of functionalized dihydroquinolinones and dihydrobenzoquinolinones, with mechanistical studies supporting the feasibility of 1,3-H shift and intersystem crossing of the diradical intermediate.
Article
Chemistry, Physical
Qiqi Shi, Qi Zhang, Ye Yang, Qian Zang, Zhenyu Xiao, Lingbo Zong, Kun-Peng Wang, Lei Wang
Summary: The rational design of a multicomponent electrode material with hollow structures grown on a conductive substrate can significantly enhance the performance of supercapacitors. The heterostructured Zn-Mo-Ni-O-S HMF electrode material showed high areal capacitance, excellent cycling performance, and high energy density in a hybrid supercapacitor device.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Spectroscopy
Ying Fang, Yuanyuan Meng, Chunming Yuan, Chunhui Du, Kun-Peng Wang, Shaojin Chen, Zhi-Qiang Hu
Summary: Organic fluorescent molecules with pi-conjugated system have significant importance in applications such as bioimaging and optoelectronics. This study successfully synthesized highly planar 4-styrylbenzonitrile derivatives and discovered their strong luminescent properties in the solid state.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Spectroscopy
Yuanyuan Meng, Chunming Yuan, Chunhui Du, Ke Jia, Chunfang Liu, Kun-Peng Wang, Shaojin Chen, Zhi-Qiang Hu
Summary: A new fluorescent sensor BZCO has been developed for the detection of volatile amine vapors. This paper-based sensor exhibits high sensitivity and good selectivity, making it suitable for various applications such as food processing and fluorescent security ink.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Chemistry, Applied
Guang-Jin Shi, Yue-Dong Wang, Zhen-Xing Yu, Qi Zhang, Shaojin Chen, Liang-Zhong Xu, Kun-Peng Wang, Zhi-Qiang Hu
Summary: Three mechanochromic luminescent materials were synthesized by modifying benzothiadiazole with hindered amides and aromatic groups. These compounds exhibited large Stokes shifts in different solvents and showed fluorescence changes under mechanical force. The mechanism of their mechanochromic luminescence was explained through calculations and analysis.
Article
Biochemical Research Methods
Hui Yu, Ying Fang, Jun Wang, Qi Zhang, Shaojin Chen, Kun-Peng Wang, Zhi-Qiang Hu
Summary: In this study, a novel fluorescent probe P-ONOO- was synthesized for the detection of ONOO- based on intramolecular charge transfer. The probe showed fast response, high sensitivity, and good selectivity towards ONOO-, and it was capable of imaging endogenous and exogenous ONOO- in cells.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Applied
Yi-Meng Duan, Kun-Peng Wang, Qi Zhang, Shaojin Chen, Zhi-Qiang Hu
Summary: In this study, a novel artificial light harvesting system was designed and constructed using a fluorescent tetragonal Pd(II)-metallacycle as a platform. The system achieved high energy transfer efficiency through the coordination of suitable acceptors.
Article
Chemistry, Applied
Guang-Jin Shi, Zhen-Xing Yu, Yue-Dong Wang, Qi Zhang, Shaojin Chen, Liang-Zhong Xu, Kun-Peng Wang, Zhi-Qiang Hu
Summary: In this study, three imidazobenzothiadiazole (ImBTD) fluorescent dyes were successfully synthesized and characterized. It was found that the introduction of imidazole groups at specific positions enhanced fluorescence and allowed for acid fluorescence response. Modification of different aromatic groups at other positions also resulted in tunable mechanochromic luminescence. These dyes also showed comparable mitochondrial staining ability to commercially available positively charged dyes.
Article
Multidisciplinary Sciences
Yunhu Wang, Kunpeng Wang, Fangxu Dai, Kai Zhang, Haifeng Tang, Lei Wang, Jun Xing
Summary: The authors fabricate a single-component white-light electroluminescence device based on an aromatic carbon nitride material with high maximum luminance and external quantum efficiency. The carbon nitride LEDs emit warm-white light and have a low turn-on voltage, achieving a milestone in maximum luminance and external quantum efficiency. Low-cost carbon nitride materials have promising potential for single-component WLED application.
NATURE COMMUNICATIONS
(2022)
Article
Engineering, Environmental
Ruili Gao, Kunpeng Wang, Fanghui Wang, Hui Wang, Xuyun Wang, Jianwei Ren, Rongfang Wang
Summary: In this study, an organic molecule of perylenequinone was anchored on the surface of carbon material through pi-pi interaction and applied as the cathode of lithium-sulfur batteries (LSBs). The pi-pi interaction overcame the solvation effect of the organic molecule in organic electrolytes, providing stable existence in the long-cycle process of LSBs. The interaction mechanism between the organic molecule and lithium in the cathode was revealed, and the prepared electrode exhibited good cycling stability with high capacity retention.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Organic
Ying Li, Yi-Meng Duan, Gui-Hua Chen, Hao-Ran Hu, Xiao-Ni Han, Kun-Peng Wang, Zhi-Qiang Hu, Chuan-Feng Chen
Summary: In this study, the host-guest complexation between pagoda[n]arenes and the tropylium cation was investigated. Both P4 and P5 showed strong binding affinities towards the tropylium cation, with association constants of more than 107 M-1 for the 1:1 host-guest complexes. Theoretical calculations revealed different complexation modes for G@P4 and G@P5, with pi center dot center dot center dot pi and C-H center dot center dot center dot pi interactions playing important roles.
Article
Spectroscopy
Jun Wang, Shu-Yang Liu, Guan-Hua Yu, Hao-Ran Hu, Ying Fang, Shao-Jin Chen, Kun-Peng Wang, Zhi-Qiang Hu
Summary: A novel fluorescent probe B-Ch was designed based on the intramolecular charge transfer (ICT) effect for detecting ONOO-. The detection sensitivity of the probe was improved by replacing the diethylamine group with a hydroxyl group through molecular engineering. After the addition of ONOO-, noticeable changes in solution color and fluorescence were observed, which were visible to the naked eye. The probe exhibited excellent advantages such as visualization, good selectivity, low sensitivity (22.4 nM), good stability and biocompatibility, and exogenous and endogenous imaging of ONOO- in HeLa cells.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Spectroscopy
Guan-Hua Yu, Hao-Ran Hu, Rui-Bin Liu, Guo-Zhu Sheng, Jia-Jie Niu, Ying Fang, Kun-Peng Wang, Zhi-Qiang Hu
Summary: A new triphenylamine-based fluorescence probe PDTPA was designed and synthesized for the accurate and rapid monitoring of ClO- in mitochondria. The probe showed high sensitivity and fast fluorescence response in the detection of ClO-. Confocal fluorescence images demonstrated its capability to target mitochondria and track the fluctuations of ClO- levels in living cells.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Chemistry, Multidisciplinary
Gui-Hua Chen, Yi-Meng Duan, Ying Li, Xiao-Ni Han, Kun-Peng Wang, Zhi-Qiang Hu, Chuan-Feng Chen
Summary: The complexation behaviors of pagoda[n]arenes (n = 4, 5) with ferrocene, ferrocenium, and analogues cobaltocenium have been studied. The inclusion complexes of pagoda[n]arenes can protect ferrocenium from oxidation in organic solvents and improve the stability and oxygen resistance of ferrocenium.
CHEMICAL COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Ruili Gao, Shan Ji, Fanghui Wang, Kunpeng Wang, Hui Wang, Xianguo Ma, Vladimir Linkov, Xuyun Wang, Rongfang Wang
Summary: In this study, perylenequinone was used to enhance polysulfide chemisorption and conversion on cobalt-containing Li-S battery cathodes. The newly prepared cathode material exhibited excellent rate and cycling performances.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Ye Yang, Kun-Peng Wang, Qian Zang, Qiqi Shi, Yiwei Wang, Zhenyu Xiao, Qi Zhang, Lei Wang
Summary: Creating hydrogel electrolytes with balanced conductivity, mechanical robustness, and flexibility is still a challenge. In this study, anionic lambda-carrageenan gels (LC) and ethylene glycol (EG) were introduced into a poly(vinyl alcohol) (PVA) hydrogel to obtain an organo-hydrogel with a fixed K+ channel. The resulting hydrogel showed superior anti-freezing ability, thermal stability, and high ionic conductivity. A supercapacitor device fabricated using this hydrogel exhibited high specific capacitance, outstanding energy density, and a wide potential window.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
