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Start Over Author "Xue, Dong" Journal angewandte chemie
30 results on '"Xue, Dong"'

3. Werner Salt as Nickel and Ammonia Source for Photochemical Synthesis of Primary Aryl Amines.

Author

Song, Geyang, Song, Jiameng, Li, Qi, Nong, Ding‐Zhan, Dong, Jianyang, Li, Gang, Fan, Juan, Wang, Chao, Xiao, Jianliang, and Xue, Dong

Subjects
AROMATIC amines, TRANSITION metal catalysts, CATALYST poisoning, AMINATION, ARYL chlorides, NICKEL, AMMINE, BISMUTH oxides
Abstract

Cheap, stable and easy‐to‐handle Werner ammine salts have been known for more than a century; but they have been rarely used in organic synthesis. Herein, we report that the Werner hexammine complex [Ni(NH3)6]Cl2 can be used as both a nitrogen and a catalytic nickel source that allow for the efficient amination of aryl chlorides in the presence of a catalytic amount of bipyridine ligand under the irradiation of 390–395 nm light without the need of any additional catalysts. More than 80 aryl chlorides, including more than 20 drug molecules, were aminated, demonstrating the practicality and generality of this method in synthetic chemistry. A slow NH3 release mechanism is in operation, obviating the problem of catalyst poisoning. Still interestingly, we show that the Werner salt can be easily recovered and reused, solving the problem of difficult recovery of transition metal nickel catalysts. The protocol thus provides an efficient new strategy for the synthesis of primary aryl amines. [ABSTRACT FROM AUTHOR]

Published
2024
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5. Hierarchical Integration of Organic Core/Shell Microwires for Advanced Photonics

Author

Hong‐Tao Lin, Ying‐Xin Ma, Song Chen, and Xue‐Dong Wang

Subjects
General Chemistry, General Medicine, Catalysis
Abstract

The combination of multiple components or structures into integrated micro/nanostructures for practical application has been pursued for many years. Herein, a series of hierarchical organic microwires with branch, core/shell (C/S), and branch C/S structures are successfully constructed based on organic charge transfer (CT) cocrystals with structural similarity and physicochemical tunability. By regulating the intermolecular CT interaction, single microwires and branch microstructures can be integrated into the C/S and branch C/S structures, respectively. Significantly, the integrated branch C/S microwires, with multicolor waveguide behavior and branch structure multichannel waveguide output characteristics, can function as an optical logic gate with multiple encoding features. This work provides useful insights for creating completely new types of organic microstructures for integrated optoelectronics.

Published
2022

6. Excited‐State Intramolecular Proton Transfer Parent Core Engineering for Six‐Level System Lasing Toward 900 nm

Author

Chang‐Cun Yan, Yan‐Ping Liu, Wan‐Ying Yang, Jun‐Jie Wu, Xue‐Dong Wang, and Liang‐Sheng Liao

Subjects
General Chemistry, General Medicine, Catalysis
Abstract

Organic molecules which can undergo excited-state intramolecular proton transfer (ESIPT) process have been considered as ideal gain materials for near-infrared organic lasers owing to their effective four-level systems. However, extending lasing wavelength beyond 800 nm with present ESIPT-active gain materials is still in challenge. Herein, we established a molecular design strategy that operates via extending the π-conjugated system of the ESIPT parent core to enhance the cascaded double ESIPT process and thus to achieve the red-shifted six-level system lasing. Concretely, a model molecule with 1,9-dihydroxyanthracene as the ESIPT parent core was designed and synthesized, which was proved to undergo twice cascaded ESIPT processes while the 1,8-dihydroxynaphthalene-based analogue can only undergo once ESIPT process based on DFT calculations and ultrafast dynamics analyses. Finally, a six-level system lasing toward 900 nm was achieved with a low threshold of 27.4 μJ cm

Published
2022

11. Organic Branched Heterostructures with Optical Interconnects for Photonic Barcodes

Author

Yang Su, Bin Wu, Song Chen, Ji‐Hao Sun, You‐Jun Yu, Ming‐Peng Zhuo, Zuo‐Shan Wang, and Xue‐Dong Wang

Subjects
General Chemistry, General Medicine, Catalysis
Abstract

Optical interconnects exhibit superior potential in the precise regulation of photon transmission for organic photonic circuits. However, the rational design of well-defined organic heterostructures toward active optoelectronics remains challenging. Herein, we designed organic branched heterostructures (OBHs) with accurate spatial organization for optical interconnection. Notably, the precise regulation of OBHs has been controllably achieved including the trunk morphologies and the branched microwire number. Significantly, these as-prepared OBHs inherently exhibit the multichannel coupling outputs and the excitation position-dependent waveguide characteristics, leading to various outcoupling signals with tunable intensity and emission colors. The optical interconnects are realized due to the occurrence of exciton conversion and photon propagation between branch and trunk at the heterojunction, benefiting the application possibilities of two-dimensional (2D) optical barcodes.

Published
2022

14. Hierarchical Integration of Organic Core/Shell Microwires for Advanced Photonics.

Author

Lin, Hong‐Tao, Ma, Ying‐Xin, Chen, Song, and Wang, Xue‐Dong

Subjects
LOGIC circuits, CHARGE transfer, INTERMOLECULAR interactions, ORGANIC bases, OPTOELECTRONICS
Abstract

The combination of multiple components or structures into integrated micro/nanostructures for practical application has been pursued for many years. Herein, a series of hierarchical organic microwires with branch, core/shell (C/S), and branch C/S structures are successfully constructed based on organic charge transfer (CT) cocrystals with structural similarity and physicochemical tunability. By regulating the intermolecular CT interaction, single microwires and branch microstructures can be integrated into the C/S and branch C/S structures, respectively. Significantly, the integrated branch C/S microwires, with multicolor waveguide behavior and branch structure multichannel waveguide output characteristics, can function as an optical logic gate with multiple encoding features. This work provides useful insights for creating completely new types of organic microstructures for integrated optoelectronics. [ABSTRACT FROM AUTHOR]

Published
2023
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