Metallophilic interactions

Doerrer, Linda H.; Rosario, Cathlene Del; Fan, A.

doi:10.1016/b978-0-12-823144-9.00171-0

Cited by 3 publications

(2 citation statements)

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“…The distances between adjacent silver atoms fall in the range of 2.98−3.25 Å, which is smaller than the sum of the van der Waals radius of silver (3.44 Å), suggesting the presence of argentophilic interactions. 35,36 Structural details suggest that the Ag 10 S 6 cluster contains a rhombic Ag 4 subunit sandwiched between two chair-shaped Ag 3 S 3 subunits, linked to each other through argentophilic interaction and silver-thiolate bonds (Figure S1). Out of six S atoms, four of these bind to silver through the μ 4 -η 1 :η 1 :η 1 :η 1 coordination mode, with Ag−S bond distances of ∼2.36−2.74 Å, and the remaining two S atoms bind to silver through the μ 3 -η 1 :η 1 :η 1 coordination mode, with Ag−S bond distances of ∼2.47 Å (Figure S2).…”

Section: Resultsmentioning

confidence: 99%

The Ag₁₀ Cluster-Based One-Dimensional Silver-Thiolate Assembly: Structural Architecture and Photophysical Properties

Manikkoth,

Baidya,

Rajasree

et al. 2024

Crystal Growth & Design

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Silver clusters create the most aesthetic structures compared with other group-11 metal systems, but structural instability often hinders probing their in-depth optoelectronic properties. Assembling these clusters to higher dimensions provides the needed stability and creates a platform to underscore the dimensionality-dependent photophysical properties. Here, we synthesized a one-dimensional ladder-like architecture by interconnecting [Ag 10 ( t BuS) 6 (CF 3 COO) 6 ] 2− cluster through a 4,4′trimethylene dipyridine linker. The 1D chains are stacked in an AAAA fashion in the c direction and an ABAB fashion in the a direction to form a three-dimensionally supramolecular extended solid. Steady-state and transient emission experiments probed at room temperature and 77 K showed the presence of triplets with lifetime >50 μs at 77 K and room temperature reverse intersystem crossing. The detailed photophysical study proposed that this one-dimensional assembly acquires a large window of radiative recombination and its dynamics as a function of external stimuli.

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Section: Resultsmentioning

confidence: 99%

The Ag₁₀ Cluster-Based One-Dimensional Silver-Thiolate Assembly: Structural Architecture and Photophysical Properties

Manikkoth,

Baidya,

Rajasree

et al. 2024

Crystal Growth & Design

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“…Such an effect might be derived from the heavy atom nature of Hg 2+ . As Hg 2+ presents a high electron count in its outer shells, it can interact with the excitedstate electrons of a fluorophore, as are naphthalimide-based molecules, through spin-orbit coupling [44]. These interactions potentiate the occurrence of non-radiative decay pathways, which lead to the deactivation of the excited state, and thus, a visible quenching effect.…”

Section: Metal Sensing Ability Of Naphthalimide Derivatives In Soluti...mentioning

confidence: 99%

Fluorescent Polymers for Environmental Monitoring: Targeting Pathogens and Metal Contaminants with Naphthalimide Derivatives

Galhano,

Kurutos,

Dobrikov

et al. 2024

Preprint

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The continuous monitoring of Hg2+ levels in aqueous environments is crucial to assess a potential indication of methylmercury contamination via bacterial conversion, yet existing methods often require extensive sample treatment, expensive equipment, and transportation to a specialized facility. To mitigate this issue, this study introduces the synthesis and application of three naphthalimide-based compounds with significant fluorescent and solvatochromic behaviour (C1, C2 and C3) for the detection of mercury ions, with an inherent associated antibacterial activity, creating a dual-functionality material. The incorporation of these compounds into polymers, such as polyvinyl chloride (PVC), poly (methyl methacrylate-co-methacrylic acid) (PUMA), and starch, allowed for the development of solid-support sensors/surfaces with a strong antibacterial profile, highlighting the inherent dual-functionality of the compounds. Most interestingly, the C2-doped starch biopolymer allowed for the detection of Hg2+ ions at concentrations as low as 2 ppm in an aqueous environment through a rapid, on-site evaluation without the need for sample treatment. This biopolymer was constructed following a sustainable, green-chemistry-oriented, temperature-dependent water/starch synthetic route, without the addition of plasticizers, and without any associated ecotoxicity. The study promotes the use of sustainable methods for environmental monitoring and antibacterial applications, advancing material science to offer effective, accessible, and eco-friendly solutions for detecting and mitigating mercury pollution and bacterial contaminations, enhancing environmental and health safety.

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