Novel class of water-soluble phosphonate silver cluster assembled material for efficient photoelectric sensing and photoacoustic imaging

Abstract

Due to the atomic precession and exotic photophysical properties, silver cluster assembled materials (CAMs) are explored as functional nanomaterials in recent times. Although a few numbers of thiolate protected silver...

Role of Non-covalent Interaction toward Conductivity in a One-Dimensional Tube-like Silver-Thiolate Structure

“…The binding energy survey plot obtained from the X-ray photoelectron spectroscopic measurement supports the existence of respective elements in the crystal (Figure 2b). In the binding energy spectrum of Ag 3d, two peaks were obtained at 368.43 and 374.43 eV with an exact separation of 6 eV, corresponding to 3d 5/2 and 3d 3/2 , respectively, which confirms the presence of Ag only in the +1 oxidation state 21,22 (Figure 2c). The −1 oxidation state of S was confirmed by peaks at 162.61 and 163.76 eV, which correspond to 2p 3/2 and 2p 1/2 in the binding energy spectrum of S 2p 21,22 (Figure S8).…”

“…In the binding energy spectrum of Ag 3d, two peaks were obtained at 368.43 and 374.43 eV with an exact separation of 6 eV, corresponding to 3d 5/2 and 3d 3/2 , respectively, which confirms the presence of Ag only in the +1 oxidation state , (Figure c). The −1 oxidation state of S was confirmed by peaks at 162.61 and 163.76 eV, which correspond to 2p 3/2 and 2p 1/2 in the binding energy spectrum of S 2p , (Figure S8). The peaks of the O 1s and N 1s binding energy spectrum confirm the presence of solvent molecules in the structure (Figure S8).…”

“…Based on the literature reports, most of the cluster self-assembled structures are either three-dimensional or two-dimensional architecture, while the successful realization of cluster-based one-dimensional structures has been scant in the cluster-assembled structure library. − Recently, it has been shown by Negishi and co-workers how different interactions between the ligands are responsible for the preferred one-dimensional structure . Self-assembled one-dimensional polymeric chains of metal atoms with various surface protecting groups are recently emphasized due to their exceptional properties in comparison to the higher dimensional architecture. − In most cases, the structural relationship of these building blocks with photophysical properties is evaluated. However, the semiconducting properties of these materials and the effect of network formation have not been studied much. , …”

[Cu18H3(S-Adm)12(PPh3)4Cl2]: fusion of Platonic and Johnson solids through a Cu(0) center and its photophysical properties

“…Due to the quantum connement effect, the discrete energy level of the NC offers unprecedented opportunities to nd optoelectronic applicability. 24,68,69 DFT calculations were employed to scrutinize the electronic structure of the Cu 18 NC. The projected density of states (PDOS) analysis reveals that the valence band region of this NC is predominantly occupied by Cu(d) states (Fig.…”

Depletion Driven Assembly of Ultrasmall Metal Nanoclusters: From Kinetically Arrested Assemblies to Thermodynamically Stable, Spherical Superclusters

“…Subnanometer sized, metal nanoclusters (MNCs) are unique class of nanoscale material with molecule-like properties such as HOMO–LUMO transitions, photoluminescence (PL), large Stokes shift, chirality, intrinsic magnetism, etc. − These excellent properties endow MNCs suitable for various applications such as sensing, catalysis, bioimaging, therapy, etc. − An effective way to enrich their functional diversity is to build self-assembled superstructures through various interactions. − Particularly, from the supramolecular point of view, MNCs with well-defined size and composition could be an ideal building block as it holds all the essential components for directing the self-assembly process. By means of supramolecular interactions such as H-bonding, hydrophobic interaction, electrostatic interaction, Π–Π stacking, etc., a wide variety of MNC-based self-assembled superstructures could be created across multiple length scales and dimensions. − These superstructures offer large diversity in physicochemical properties and thus broaden their horizon for many practical applications. − …”