Three Distinct Silver(I) Coordination Polymers: Bridging‐­Ligand Directed Syntheses, Crystal Structures, Luminescence, and Nitrobenzene Sensing Properties

Abstract

-, diatomic CN -, and triatomic SCN -bridges, respectively. 1-3 were determined by FT-IR spectroscopy, elemental analyses, TGA, powder and single-crystal X-ray diffraction. 1 exhibits a 1D wavelike chain structure, sustained by 3-connected I -bridges, whereas 2 shows a unique 1D single-and double-strand alternat-

Ag(i) and Cu(i) cyclic-triimidazole coordination polymers: revealing different deactivation channels for multiple room temperature phosphorescences

“…10,11 Though some Ag(I) double-stranded structures have been reported in the past (see [12] and references therein), only a handful of studies, to the best of our knowledge, include the photophysical characterization of the investigated compounds. [13][14][15][16] In particular, a deep analysis has been reported on the [Ag 2 (Bmib)I 2 ] n and [Ag 2 (Bmib)Br 2 ] n (Bmib standing for 1,4-bis(2-methylimidazol-1-yl)butane) stair polymers, 13 where the ligand was properly chosen to build up Ag(I) coordination network compounds showing excitation wavelength-dependent fluorescence. Such property was ascribed to the flexibility of the long chains of the ligand and the spatial orientation adjustment of the methyl groups at different excitation wavelengths.…”

Five Novel Silver‐Based Coordination Polymers as Photoluminescent Sensing Platforms for the Detection of Nitrobenzene

“…The reticular construction of silver coordination polymers (Ag x -CPs) [17][18][19][20][21][22][23] with metal-linker coordination bonds could resolve this stability issue for which the Ag-CP based sensors for NB have gained prominence. [24][25][26] In this work, we exercised the diverse coordination geometries of silver ion/cluster-based nodes with intricately designed organic linkers to present five newly synthesized silver-based coordination polymers, Ag x -CPs, where x denotes the number of Ag atoms constituting the inorganic nodes of the CPs (x = 1, 10, 12). By virtue of the π À π stacking interactions between the polymers and NB as well as the electron-withdrawing character of NB, the Ag x -CPs exhibited significant fluorescence quenching behavior with NB.…”

“…Along these lines, the lack of adequate stability of silver nanoclusters (AgNCs) [16] also hampers their practical applications. The reticular construction of silver coordination polymers (Ag x ‐CPs) [17–23] with metal–linker coordination bonds could resolve this stability issue for which the Ag‐CP based sensors for NB have gained prominence [24–26] …”

Tuning Photoluminescent Properties of Silver(I)-Based Coordination Networks through their Supramolecular Interactions

“…Silver­(I)-based coordination networks (CNs) have attracted much attention due to their structural diversity and remarkable properties, such as luminescence, − antibacterial, − catalytic, , photocatalytic, conductivity, and gas sorption. − These properties can be modulated via ligand flexibility or rigidity, functional groups, as well as by the coordination sphere around silver­(I) centers. Fluorescent CNs are of particular interest because they have potential applications in light-emitting diodes, sensors, and biomedicine. − The majority of silver­(I) complexes or CNs have weak luminescence at room temperature due to the heavy atom effect of silver­(I), which produces strong spin–orbital coupling. − Notably, low-energy emissions of monomeric or polymeric silver­(I) complexes at room temperature emerge from intraligand (IL) charge transfer rather than on the silver­(I) ions; whereas high-energy emissions are related to metal-perturbed intraligand transitions (MPIL), e.g., Ag­(I) → π*. − The presence of argentophilic interactions Ag­(I)···Ag­(I) [4d → 5s] can also enhance the intensity and/or redshift emission. − …”