From a blue to white to yellow emitter: A hexanuclear copper iodide nanocluster

Ke Xu; Bu Lin Chen; Rui Zhang; Li Liu; Xin Xin Zhong; Lei Wang; Feng Yan Li; Guang Hua Li; Khalid A. Alamry; Fa Bao Li; Wai Yeung Wong; Hai Mei Qin

doi:10.1039/c9dt04701h

From a blue to white to yellow emitter: A hexanuclear copper iodide nanocluster

Ke Xu, Bu Lin Chen, Rui Zhang, Li Liu, Xin Xin Zhong, Lei Wang, Feng Yan Li, Guang Hua Li, Khalid A. Alamry, Fa Bao Li, Wai Yeung Wong, Hai Mei Qin

Research output: Journal article publication › Journal article › Academic research › peer-review

33 Citations (Scopus)

Abstract

Highly emissive copper(i) halide nanoclusters showing thermally activated delayed fluorescence (TADF) have been paid much attention, but rarely reported so far. Herein, a hexanuclear copper(i) iodide cluster containing a tridentate N?P?N ligand, [Cu₆I₆(ppda)₂] {ppda = 2-[2-(dimethylamino)phenyl(phenyl)phosphino]-N,N-dimethylaniline}, was synthesized. All six copper atoms are four-coordinate, including four CuPNI₂and two CuI₄units. This complex exhibits intense white emission in the powder state at room temperature and shows a peak at a wavelength of 535 nm (F_PL= 0.36) with a microsecond lifetime (t= 4.4 µs). Emission colors can be largely tuned from blue to white to yellow, from the crystal to powder to film state at 297 K. The emission of [Cu₆I₆(ppda)₂] originates from a combination of MLCT and XLCT transitions. This complex showed good thermal stability. A solution-processed, nondoped device of complex [Cu₆I₆(ppda)₂] exhibits stable yellow emission with the CIE coordinates (x,y) of (0.43, 0.51). [Cu₆I₆(ppda)₂] also shows reasonable photocatalytic H₂evolution activity under visible-light irradiation.

Original language	English
Pages (from-to)	5859-5868
Number of pages	10
Journal	Dalton Transactions
Volume	49
Issue number	18
DOIs	https://doi.org/10.1039/c9dt04701h
Publication status	Published - 14 May 2020

ASJC Scopus subject areas

Inorganic Chemistry

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10.1039/c9dt04701h

http://hdl.handle.net/10397/100150

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title = "From a blue to white to yellow emitter: A hexanuclear copper iodide nanocluster",

abstract = "Highly emissive copper(i) halide nanoclusters showing thermally activated delayed fluorescence (TADF) have been paid much attention, but rarely reported so far. Herein, a hexanuclear copper(i) iodide cluster containing a tridentate N?P?N ligand, [Cu6I6(ppda)2] {ppda = 2-[2-(dimethylamino)phenyl(phenyl)phosphino]-N,N-dimethylaniline}, was synthesized. All six copper atoms are four-coordinate, including four CuPNI2and two CuI4units. This complex exhibits intense white emission in the powder state at room temperature and shows a peak at a wavelength of 535 nm (FPL= 0.36) with a microsecond lifetime (t= 4.4 µs). Emission colors can be largely tuned from blue to white to yellow, from the crystal to powder to film state at 297 K. The emission of [Cu6I6(ppda)2] originates from a combination of MLCT and XLCT transitions. This complex showed good thermal stability. A solution-processed, nondoped device of complex [Cu6I6(ppda)2] exhibits stable yellow emission with the CIE coordinates (x,y) of (0.43, 0.51). [Cu6I6(ppda)2] also shows reasonable photocatalytic H2evolution activity under visible-light irradiation.",

author = "Ke Xu and Chen, {Bu Lin} and Rui Zhang and Li Liu and Zhong, {Xin Xin} and Lei Wang and Li, {Feng Yan} and Li, {Guang Hua} and Alamry, {Khalid A.} and Li, {Fa Bao} and Wong, {Wai Yeung} and Qin, {Hai Mei}",

year = "2020",

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doi = "10.1039/c9dt04701h",

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T2 - A hexanuclear copper iodide nanocluster

AU - Xu, Ke

AU - Chen, Bu Lin

AU - Zhang, Rui

AU - Liu, Li

AU - Zhong, Xin Xin

AU - Wang, Lei

AU - Li, Feng Yan

AU - Li, Guang Hua

AU - Alamry, Khalid A.

AU - Li, Fa Bao

AU - Wong, Wai Yeung

AU - Qin, Hai Mei

PY - 2020/5/14

Y1 - 2020/5/14

N2 - Highly emissive copper(i) halide nanoclusters showing thermally activated delayed fluorescence (TADF) have been paid much attention, but rarely reported so far. Herein, a hexanuclear copper(i) iodide cluster containing a tridentate N?P?N ligand, [Cu6I6(ppda)2] {ppda = 2-[2-(dimethylamino)phenyl(phenyl)phosphino]-N,N-dimethylaniline}, was synthesized. All six copper atoms are four-coordinate, including four CuPNI2and two CuI4units. This complex exhibits intense white emission in the powder state at room temperature and shows a peak at a wavelength of 535 nm (FPL= 0.36) with a microsecond lifetime (t= 4.4 µs). Emission colors can be largely tuned from blue to white to yellow, from the crystal to powder to film state at 297 K. The emission of [Cu6I6(ppda)2] originates from a combination of MLCT and XLCT transitions. This complex showed good thermal stability. A solution-processed, nondoped device of complex [Cu6I6(ppda)2] exhibits stable yellow emission with the CIE coordinates (x,y) of (0.43, 0.51). [Cu6I6(ppda)2] also shows reasonable photocatalytic H2evolution activity under visible-light irradiation.

AB - Highly emissive copper(i) halide nanoclusters showing thermally activated delayed fluorescence (TADF) have been paid much attention, but rarely reported so far. Herein, a hexanuclear copper(i) iodide cluster containing a tridentate N?P?N ligand, [Cu6I6(ppda)2] {ppda = 2-[2-(dimethylamino)phenyl(phenyl)phosphino]-N,N-dimethylaniline}, was synthesized. All six copper atoms are four-coordinate, including four CuPNI2and two CuI4units. This complex exhibits intense white emission in the powder state at room temperature and shows a peak at a wavelength of 535 nm (FPL= 0.36) with a microsecond lifetime (t= 4.4 µs). Emission colors can be largely tuned from blue to white to yellow, from the crystal to powder to film state at 297 K. The emission of [Cu6I6(ppda)2] originates from a combination of MLCT and XLCT transitions. This complex showed good thermal stability. A solution-processed, nondoped device of complex [Cu6I6(ppda)2] exhibits stable yellow emission with the CIE coordinates (x,y) of (0.43, 0.51). [Cu6I6(ppda)2] also shows reasonable photocatalytic H2evolution activity under visible-light irradiation.

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From a blue to white to yellow emitter: A hexanuclear copper iodide nanocluster

Abstract

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