Contribution of Metal Defects in the Assembly Induced Emission of Cu Nanoclusters

Zhennan Wu; Huiwen Liu; Tingting Li; Jiale Liu; Jun Yin; Omar F. Mohammed; Osman Bakr; Yi Liu; Bai Yang; Hao Zhang

doi:10.1021/jacs.7b00773

Contribution of Metal Defects in the Assembly Induced Emission of Cu Nanoclusters

Zhennan Wu, Huiwen Liu, Tingting Li, Jiale Liu, Jun Yin, Omar F. Mohammed, Osman Bakr, Yi Liu, Bai Yang, Hao Zhang

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155 Scopus citations

Abstract

Aggregation/assembly induced emission (AIE) has been observed for metal nanoclusters (NCs), but the origin of the enhanced emission is not fully understood, yet. In this work, the significant contribution of metal defects on AIE is revealed by engineering the self-assembly process of Cu NCs using ethanol. The presence of ethanol leads to a rapid assembly of NCs into ultrathin nanosheets, promoting the formation of metal defects-rich surface. Detailed studies and computer simulation confirm that the metal defects-rich nanosheets possess increased Cu(I)-to-Cu(0) ratio, which greatly influences ligand-to-metal-metal charge transfer and therewith facilitates the radiative relaxation of excitons. Consequently, the Cu NCs self-assembly nanosheets exhibit obvious emission enhancement.

Original language	English (US)
Pages (from-to)	4318-4321
Number of pages	4
Journal	Journal of the American Chemical Society
Volume	139
Issue number	12
DOIs	https://doi.org/10.1021/jacs.7b00773
State	Published - Mar 20 2017

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This work was supported by NSFC (51425303), the National key research and development program of China (2016YFB0401701), the 973 Program of China (2014CB643503), and the Special Project from MOST of China.

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@article{632ae4c8fabd430587a914286442466c,

title = "Contribution of Metal Defects in the Assembly Induced Emission of Cu Nanoclusters",

abstract = "Aggregation/assembly induced emission (AIE) has been observed for metal nanoclusters (NCs), but the origin of the enhanced emission is not fully understood, yet. In this work, the significant contribution of metal defects on AIE is revealed by engineering the self-assembly process of Cu NCs using ethanol. The presence of ethanol leads to a rapid assembly of NCs into ultrathin nanosheets, promoting the formation of metal defects-rich surface. Detailed studies and computer simulation confirm that the metal defects-rich nanosheets possess increased Cu(I)-to-Cu(0) ratio, which greatly influences ligand-to-metal-metal charge transfer and therewith facilitates the radiative relaxation of excitons. Consequently, the Cu NCs self-assembly nanosheets exhibit obvious emission enhancement.",

author = "Zhennan Wu and Huiwen Liu and Tingting Li and Jiale Liu and Jun Yin and Mohammed, {Omar F.} and Osman Bakr and Yi Liu and Bai Yang and Hao Zhang",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: This work was supported by NSFC (51425303), the National key research and development program of China (2016YFB0401701), the 973 Program of China (2014CB643503), and the Special Project from MOST of China.",

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doi = "10.1021/jacs.7b00773",

language = "English (US)",

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T1 - Contribution of Metal Defects in the Assembly Induced Emission of Cu Nanoclusters

AU - Wu, Zhennan

AU - Liu, Huiwen

AU - Li, Tingting

AU - Liu, Jiale

AU - Yin, Jun

AU - Mohammed, Omar F.

AU - Bakr, Osman

AU - Liu, Yi

AU - Yang, Bai

AU - Zhang, Hao

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: This work was supported by NSFC (51425303), the National key research and development program of China (2016YFB0401701), the 973 Program of China (2014CB643503), and the Special Project from MOST of China.

PY - 2017/3/20

Y1 - 2017/3/20

N2 - Aggregation/assembly induced emission (AIE) has been observed for metal nanoclusters (NCs), but the origin of the enhanced emission is not fully understood, yet. In this work, the significant contribution of metal defects on AIE is revealed by engineering the self-assembly process of Cu NCs using ethanol. The presence of ethanol leads to a rapid assembly of NCs into ultrathin nanosheets, promoting the formation of metal defects-rich surface. Detailed studies and computer simulation confirm that the metal defects-rich nanosheets possess increased Cu(I)-to-Cu(0) ratio, which greatly influences ligand-to-metal-metal charge transfer and therewith facilitates the radiative relaxation of excitons. Consequently, the Cu NCs self-assembly nanosheets exhibit obvious emission enhancement.

AB - Aggregation/assembly induced emission (AIE) has been observed for metal nanoclusters (NCs), but the origin of the enhanced emission is not fully understood, yet. In this work, the significant contribution of metal defects on AIE is revealed by engineering the self-assembly process of Cu NCs using ethanol. The presence of ethanol leads to a rapid assembly of NCs into ultrathin nanosheets, promoting the formation of metal defects-rich surface. Detailed studies and computer simulation confirm that the metal defects-rich nanosheets possess increased Cu(I)-to-Cu(0) ratio, which greatly influences ligand-to-metal-metal charge transfer and therewith facilitates the radiative relaxation of excitons. Consequently, the Cu NCs self-assembly nanosheets exhibit obvious emission enhancement.

UR - http://hdl.handle.net/10754/623813

UR - http://pubs.acs.org/doi/full/10.1021/jacs.7b00773

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U2 - 10.1021/jacs.7b00773

DO - 10.1021/jacs.7b00773

M3 - Article

C2 - 28318238

SN - 0002-7863

VL - 139

SP - 4318

EP - 4321

JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

IS - 12

ER -

Contribution of Metal Defects in the Assembly Induced Emission of Cu Nanoclusters

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