A Silver Cluster‐Assembled Material Showing Luminescent Mechanochromism and Thermochromism

Ma, Xiaofeng

doi:10.1002/cjoc.201900373

Cited by 3 publications

(2 citation statements)

References 7 publications

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“…In this minireview, a comprehensive summary of recent advances in mechanochromic metal-organic compounds was provided (Figure 2). According to the number of metal atoms in the compounds, we summarized the mono-, di-, and multinuclear complexes, even metallic clusters (Benito et al, 2015;Li et al, 2017;Zhang et al, 2017;Ma, 2019) and metal-organic framework (MOF) (Wei et al, 2016;Wu and Huang, 2018;Jindal et al, 2021) with mechanochromisms, including iridium, platinum, gold, copper and zinc etc. At the same time, the different mechanochromic mechanisms of these complexes were also discussed.…”

Section: Introductionmentioning

confidence: 99%

Recent Advances in Mechanochromism of Metal-Organic Compounds

Wang

et al. 2022

Front. Chem.

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Smart luminescent materials, which can respond to the changing of external environment (light, electricity, force, temperature, etc.), have always been one of the research hotspots. Mechanochromism refers to the materials whose emission color or intensity can be altered under the stimulation of external mechanical force. This kind of smart materials have been widely used in data storage, information encryption and sensors due to its simple operation, obvious and rapid response. The introduction of metal atoms in metal-organic compounds brings about fascinating metalophilic interactions and results in more interesting and surprising mechanochromic behaviors. In this mini-review, recent advances in mechanochromism of metal-organic compounds, including mono-, di-, multinuclear metal-organic complexes and metallic clusters are summarized. Varies mechanisms are discussed and some design strategies for metal-organic compounds with mechanochromism are also presented.

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Section: Introductionmentioning

confidence: 99%

Recent Advances in Mechanochromism of Metal-Organic Compounds

Wang

et al. 2022

Front. Chem.

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“…[12][13][14][15][16][17] Mechano-responsive fluorescent compounds make up one of the most important classes of smart compounds. In fact, mechano-responsive fluorescent compounds exhibit mechanochromic luminescence (MCL), [18][19][20][21][22][23][24][25][26][27][28][29] a property whereby changes in luminescence are triggered by anisotropic or isotropic mechanical stresses. In their pioneering work, Zink [30][31] and Mataka [32] et al demonstrated triboluminescenece of hexaphenylcarbodiphosphorane and mechanochromic polymorphs of 5,6-di(p -chlorobenzoyl)-1,3,4,7-tetraphenylbenzo[c ]thiophene, respectively.…”

Section: Introductionmentioning

confidence: 99%

Recent Advances in Mechano-responsive Fluorescent Organic and Organometallic Compounds: Structural Diversity, Phase Transformation and Applications

Wang¹,

Li²,

Sun³

et al. 2022

Preprint

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Developing smart luminescent materials, especially stimulus-responsive fluorescent materials, is a goal of great importance, as well as a challenge. Mechano-responsive fluorescence is a property whereby the fluorescence characteristics (i.e., emission color, quantum yield, or lifetime) of a species change as a result of mechanical stimulation. In general, the said mechanical stimulation causes a phase transition in the material, and it simultaneously induces a fresh interaction of the luminous, resulting in a change in the color of the photoluminescence emission. Therefore, the transition of a material from crystalline-to-amorphous, from amorphous-to-crystalline, or from a crystalline to another, as well as the phase transformation of liquid crystals, can contribute to changes in fluorescence emission triggered by a mechanic stimulus. This article briefly reviews the development of such mechano-responsive fluorescent compounds, which consist of organic or organometallic molecules, and the emerging trends in this research field.

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Luminescence Regulation of Silver‐Thiolate Clusters Protected by 1,2‐Dithiolate‐o‐carborane

2020

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Silver clusters | Surface modification | 1,2-Dithiolate-o-carborane | Luminescence Engineering the surface of the metal clusters with the core structure maintained and tuning their luminescence in a wide range is still a challenge in the nanomaterial research. We modified six mono-pyridyl ligands with different electronic effects (conjugation effect or induction effect) on a superatomic silver cluster [Ag 14 (C 2 B 10 H 10 S 2) 6 (CH 3 CN) 8 ] (denoted as Ag 14) through in situ site-specific surface engineering, and obtained the corresponding clusters [Ag 14 (C 2 B 10 H 10 S 2) 6 (CH 3 CN) 6 (L 1 /L 2) 2 ] (denoted as NC-1, 2, L 1 /L 2 = 4-acetylpyridine/ 4-carboxypyridine) and [Ag 14 (C 2 B 10 H 10 S 2) 6 (L 3 /L 4 /L 5 /L 6) 8 ] (denoted as NC-3, 4, 5, 6, L 3 /L 4 /L 5 /L 6 = 4-phenylpyridine/4-(1-naphthyl)pyridine/9-(4-pyridine)anthracene/9-(4-pyridine)pyrene). Through the modification of the Ag 14 cluster, a wide-range luminescence from blue to red was realized. This work might provide a practical guide for improving the emission performance of metal clusters via surface engineering.

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A Silver Cluster‐Assembled Material Showing Luminescent Mechanochromism and Thermochromism

Abstract: Herein, a novel silver cluster‐assembled material Ag18bpy‐NH2 was prepared and structurally characterized, which exhibits reversible luminescent mechanochromism and thermochromism.

Cited by 3 publications

References 7 publications

Recent Advances in Mechanochromism of Metal-Organic Compounds

Recent Advances in Mechanochromism of Metal-Organic Compounds

Recent Advances in Mechano-responsive Fluorescent Organic and Organometallic Compounds: Structural Diversity, Phase Transformation and Applications

Luminescence Regulation of Silver‐Thiolate Clusters Protected by 1,2‐Dithiolate‐o‐carborane

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