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Your search keyword '"Li, YongXin"' showing total 33 results
Start Over Author "Li, YongXin" Journal angewandte chemie
33 results on '"Li, YongXin"'

1. Synthesis and Properties of Azahomocorannulenyl Cations and Radicals.

Author

Hamamoto, Yosuke, Ochiai, Kotaro, Li, Yongxin, Tapavicza, Enrico, and Ito, Shingo

Subjects
RADICAL cations, RING formation (Chemistry), YLIDES, ISOXAZOLIDINES, X-ray diffraction, OPTICAL properties, SCHIFF bases, RADICALS (Chemistry)
Abstract

Cycloheptatrienyl (tropyl) molecules are representative non‐alternant hydrocarbons that offer interesting chemistry because of their unique structures and properties. However, there have been a limited number of polycyclic aromatic tropyl cations and radicals reported in the literature. Herein, we report the synthesis of a series of azahomocorannulene derivatives, where the key reactions are a 1,3‐dipolar cycloaddition of polycyclic aromatic azomethine ylides with dibenzotropone and a subsequent palladium‐catalyzed cyclization. X‐ray diffraction analysis revealed that the obtained azahomocorannulenyl cation and radical adopt planar structures and exhibit unique packing structures. Their electronic and optical properties were investigated experimentally and theoretically to reveal their aromatic character. [ABSTRACT FROM AUTHOR]

Published
2024
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6. Diazapentabenzocorannulenium: A Hydrophilic/Biophilic Cationic Buckybowl.

Author

Li, Qiang‐Qiang, Hamamoto, Yosuke, Kwek, Germain, Xing, Bengang, Li, Yongxin, and Ito, Shingo

Subjects
ORGANIC electronics, FLUORESCENT probes, MOLECULAR structure, X-ray crystallography, PACKED towers (Chemical engineering)
Abstract

Polycyclic aromatic molecules are promising functional materials for a wide range of applications, especially in organic electronics. However, their largely hydrophobic nature has impeded further applications. As such, imparting high solubility/hydrophilicity to polycyclic aromatic molecules leads to a breakthrough in this research field. Herein, we report the synthesis of diazapentabenzocorannulenium, a cationic nitrogen‐embedded buckybowl bearing a central imidazolium core, by a bottom‐up strategy from polycyclic aromatic azomethine ylide. X‐ray crystallography analyses have revealed a bowl‐shaped molecular structure that is capable of forming charge‐segregated one‐dimensional columns by bowl‐in‐bowl packing. In addition to its fluorescence capabilities and high dispersibility in water, the molecule was found to selectively localize in the mitochondria of various tumor cells, showing potential as viable mitochondria‐selective fluorescent probes. [ABSTRACT FROM AUTHOR]

Published
2022
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7. Metal Coordination Sphere Deformation Induced Highly Stokes‐Shifted, Ultra Broadband Emission in 2D Hybrid Lead‐Bromide Perovskites and Investigation of Its Origin

Author

Febriansyah, Benny, primary, Borzda, Tetiana, additional, Cortecchia, Daniele, additional, Neutzner, Stefanie, additional, Folpini, Giulia, additional, Koh, Teck Ming, additional, Li, Yongxin, additional, Mathews, Nripan, additional, Petrozza, Annamaria, additional, and England, Jason, additional

Published
2020
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15. Innenrücktitelbild: From Linear to Angular Isomers: Achieving Tunable Charge Transport in Single-Crystal Indolocarbazoles Through Delicate Synergetic CH/NH⋅⋅⋅π Interactions (Angew. Chem. 29/2018)

Author

Jiang, Hui, primary, Hu, Peng, additional, Ye, Jun, additional, Chaturvedi, Apoorva, additional, Zhang, Keke K., additional, Li, Yongxin, additional, Long, Yi, additional, Fichou, Denis, additional, Kloc, Christian, additional, and Hu, Wenping, additional

Published
2018
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23. Engineering the Frontier Orbitals of a Diazadiborinine for Facile Activation of H2, NH3, and an Isonitrile.

Author

Su, Yuanting, Li, Yongxin, Ganguly, Rakesh, and Kinjo, Rei

Subjects
*NUCLEAR magnetic resonance spectroscopy, *CRYSTAL structure, *INFRARED spectra, *FLUORESCENCE spectroscopy, *ELECTROSPRAY ionization mass spectrometry
Abstract

Abstract: An annulated 1,3,2,5‐diazadiborinine with 14 π electrons has been synthesized and fully characterized. Experimental and computational studies revealed that this compound features a rather small HOMO–LUMO gap, which leads to enhanced reactivity towards small molecules. Thus, the 1,3,2,5‐diazadiborinine readily cleaves the H−H bond of dihydrogen and an N−H bond of ammonia under mild conditions. Moreover, it reacts with 2,6‐dimethylphenylisonitrile in a [4+1] cycloaddition at room temperature. [ABSTRACT FROM AUTHOR]

Published
2018
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