Electron-induced chemistry of surface-grown coordination polymers with different linker anions

Abstract

The structure of the linker anions is decisive for the efficiency and outcome of electron-induced chemistry in surface-grown layers of copper(ii) containing materials.

Mixed-ligand zinc-oxoclusters: efficient chemistry for high resolution nanolithography

“…with kinetic energy higher than the ionization potential of the molecule. [59][60][61] The resulting fragments would be an allyl or a trifluoromethyl radical and an outgassing neutral CO 2 molecule. These sites are likely to react with water or oxygen when the film is exposed to ambient atmosphere after EUV exposure and can further lead to aggregation with neighbouring clusters.…”

Probing the dynamics of Cu nanoparticle growth inside metal-organic frameworks upon electron beam irradiation

“…This observation is confirmed by the fact that measured interplanar distances (<dhkl> = 0.207 ± 0.004 nm) are in excellent agreement with the (111) interplanar distance of Cu (d111 = 0.2087 nm). Based on the previous results on the effect of e-beam on the chemi cal bounding of MOFs [15][16][17][18] and similar reason for growth of Pt and Au NPs from organometallic precursors [30,31], the possibility of the growth of the NPs from the constituent parts of HKUST-1 is due to breaking of bonds between copper and organic part. Moreover, the growth of pure Cu NPs instead of its oxide form is explained by a lower oxidation potential of Cu and relatively weak Cu COO bond energy, which promote the metallic state [15].…”

“…HKUST-1 is also a representative class of MOFs that are easy to grow on different surfaces following a layer-by-layer approach [26], which makes it promising for applied research. Moreover, the compound has been recently investigated to reveal the mechanism of electron-induced decomposition and the reason for NPs formation [15][16][17][18].…”

“…On the one hand, the compatibility of MOFs with chemical vapour deposition technology [9], plasma synthesis [10], and thin film growth [11] supports their integration into microelectronic devices. On the other hand, the post-processing of MOFs by heat [12], light [13,14] and electron irradiation [15][16][17][18] highlights their application as optical glasses and active optical elements in nanophotonics. Indeed, such post-processing initiates the deformation of framework backbone and breaking of chemical bonds [19] leading to formation of amorphous glassy compounds [12], nanocomposites [20] and nanoparticles (NPs) with different optial properties [13,14,21].…”

Enhanced visible light photocatalytic degradation of dyes in aqueous solution activated by HKUST-1: performance and mechanism

“…The O 1s spectra has a peak at 532.18 eV, which is assigned to the carboxylate groups (O-C]O) in HKUST-1. 26 Aer photocatalytic degradation, the binding energy of the O-C]O shis to 531.98 eV, which is 0.2 eV less than for HKUST-1 (before reaction). The Cu 2p spectrum features peaks at 954.88 and 935.08 eV, associated with Cu 2p 1/2 and Cu 2p 3/2 .…”