2021
DOI: 10.1039/d1dt02344f
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Luminescent Cu4I4-cubane clusters based on N-methyl-5,10-dihydrophenarsazines

Abstract: Luminescent As-supported Cu4I4 cubane tetramers with a dual band emission, showing temperature-dependent intensities, were synthesized and studied in detail by DFT calculations.

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Cited by 15 publications
(16 citation statements)
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“…Cubane‐like Cu 4 I 4 complexes often demonstrate the dual emission in the blue (high energy (HE) band) and yellow or red (low energy (LE) band) ranges of the spectrum. The reasons for the dual emission of cubane‐like complexes are well studied and caused by the transitions from the two triplet states with metal‐to‐ligand charge transfer ( 3 MLCT or 3 (M+X)LCT) and cluster‐centered ( 3 CC) origins [46–49] . In contrast, octahedral Cu 4 I 4 complexes are less studied than their cubane‐like analogs.…”
Section: Introductionmentioning
confidence: 99%
“…Cubane‐like Cu 4 I 4 complexes often demonstrate the dual emission in the blue (high energy (HE) band) and yellow or red (low energy (LE) band) ranges of the spectrum. The reasons for the dual emission of cubane‐like complexes are well studied and caused by the transitions from the two triplet states with metal‐to‐ligand charge transfer ( 3 MLCT or 3 (M+X)LCT) and cluster‐centered ( 3 CC) origins [46–49] . In contrast, octahedral Cu 4 I 4 complexes are less studied than their cubane‐like analogs.…”
Section: Introductionmentioning
confidence: 99%
“…According to the DSC, NMR, and photophysical experiments, it is possible to suggest that polymer 2 does not retain its polymeric structure during heating to 138.2 °C; instead, it transforms into a molecular complex, 2a , which displays a red emission. Moreover, our recent studies of the Cu 4 I 4 -octahedral complexes demonstrated that such a type of complex is able to demonstrate both green and red emissions, which are caused by the 3 (M+X)LCT transition of those structures with different symmetry from the copper-halide core [ 23 , 34 ]. According to the XRD data, the monomeric unit of polymer 2 can be regarded as a distorted octahedral Cu 4 I 4 -complex; consequently, the heating of polymer 2 probably leads to the “concerted” movement of the copper(I) and iodide, which, in turn, could result in the formation of the molecular complex 2a with an octahedral Cu 4 I 4 core.…”
Section: Resultsmentioning
confidence: 99%
“…Usually, the copper(I) halides form di- or tetranuclear clusters with the μ 2 -, μ 3 - or μ 4 - bridging coordination of halogen ions [ 9 , 10 ]. The tetranuclear copper(I) complexes are presented by clusters with three types of copper-halide cores ( Figure 1 ): cubane-type [ 8 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 ], octahedral [ 17 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 ], and stairstep [ 32 , 33 , 34 , 35 , 36 , 37 , 38 ].…”
Section: Introductionmentioning
confidence: 99%
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“…[18][19][20][21][22] Cuprous iodide, as an important branch of these copper(I) halide organic-inorganic hybrid complexes, possesses a wide range of attractive properties, including structural diversity, moisture stability, optical tunability, and strong luminescence. [23][24][25][26][27][28][29][30] Many research studies found that the hybrid materials obtained by forming covalent bonds between N, P, and S atoms of neutral organic ligands and metal halides have poor solubility, stability, and solution processability. 31,32 When the inorganic and organic components are all ion pairs, the entire structure is an ionic cuprous iodide-based hybrid complex formed by electrostatic attraction between oppositely charged ions, and its structure is similar to the lead halide perovskite structure in LED materials.…”
Section: Introductionmentioning
confidence: 99%