Highly stable and blue-emitting copper nanocluster dispersion prepared by magnetron sputtering over liquid polymer matrix

Abstract

For the first time, magnetron sputtering of copper onto liquid was investigated for the preparation of stable blue-fluorescent copper nanoclusters.

Development of ratiometric sensing and white light-harvesting materials based on all-copper nanoclusters

“…S9c †). 24,43,44 These results suggest that more electrons were lost for Cu in G-R-CuNCs-1 compared to G-CuNCs-1. Furthermore, it could be observed that Cu 2p for R-CuNCs-0 showed even more positive peaks for both Cu 2p 3/2 and Cu 2p 1/2 at 932.7 eV and 952.6 eV, respectively (Fig.…”

Sputtering onto a liquid: interesting physical preparation method for multi-metallic nanoparticles

“…Molten salt [64], vegetable oil [65,66], biomolecules [67], fatty acids [68], multifunctional group ligandcontaining liquids [69,70], polyol [71] and others have been examined as candidates for liquid sputtering to offer different surface functionality for the particles and to understand the influence of the liquid medium on particle growth. Recently, there has been great progress in particle size control on a scale from sub-nano to a few nanometres via the addition of thiol functionalized protecting agents to the liquid matrix [72][73][74][75][76][77]. Consequently, fluorescent metal NCs and NCs hybridized in polymer resins were obtained.…”

Synergistic Effect of the Oleic Acid and Oleylamine Mixed-Liquid Matrix on Particle Size and Stability of Sputtered Metal Nanoparticles

“…4,15,25,26 The studies in this field reveal important roles of the liquid matrix in the growth behavior, size control, and colloidal stability of the sputtered nanoparticles. [1][2][3][4][5][6][13][14][15][16][17][18][19][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40] Evaluating the impact of the physicochemical properties of the liquids on the particle size helped understand the particle formation. 6,18,19,[27][28][29][30][31][32][33][34][35][36][37][38] For example, when Au was sputtered onto ionic liquids, the particle nucleation could o...…”

“…[1][2][3][4][5][6][13][14][15][16][17][18][19][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40] Evaluating the impact of the physicochemical properties of the liquids on the particle size helped understand the particle formation. 6,18,19,[27][28][29][30][31][32][33][34][35][36][37][38] For example, when Au was sputtered onto ionic liquids, the particle nucleation could occur on the liquid surface and growth could occur on the liquid surface and/or in the bulk liquid. [27][28][29][30]…”

“…42,43 On the other hand, adding thiol molecules, e.g., mercaptoundercanoic acid (MUA), to PEG helped produce Cu nanoclusters with negligible change for a month. 36 Upon changing the liquid substrate from PEG containing MUA to PEMP with a rich thiol moiety, i.e., four thiol group in a molecule, Cu nanoclusters were converted to copper sulfides over time. 15 Thus, aside from thiol compounds, liquids with other functional groups should be investigated for stabilizing and protecting Cu nanoparticles.…”