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

Abstract

Herein, we developed a special strategy for the fast sensitization of red emitting copper nanoclusters with the assistance of green emitting copper nanoclusters.

The synthesis of switch-off fluorescent water-stable copper nanocluster Hg2+ sensors via a simple one-pot approach by an in situ metal reduction strategy in the presence of a thiolated polymer ligand template

“…24 These results show how the photophysical properties of CuNCs may derive from both the metal core (quantum size effects) and from metal surface effects (interactions between the metal core and the surface ligands). 12,41,48 In our case, the ligand capping molecule is a macromolecule with several hanging thiol groups that, in fact, acts as a multidentate thiolated ligand. We obtained, in all cases, hybrid CuNCs with intense yellow-green emission (around 535 nm) and high fluorescence QYs, in the region of those obtained by other authors.…”

Theoretical Insights into a Near-Infrared Fluorescent Probe NI-VIS Based on the Organic Molecule for Monitoring Intracellular Viscosity

“…The processes of the conformation search for probe NI-VIS were as follows: Using Confab [ 36 ] to obtain initial conformations of probe NI-VIS; The batch structural optimization was conducted using Crest to invoke xtb program under the GFN2-xTB method [ 37 ]; Invoke isostat in Molclus [ 38 ] program to screen out the several stable probe conformations with the local lowest free energy; The corresponding ground and excited state of different probe conformation’s structure optimization and vibrational frequency analysis on the stable probe conformations’ structure obtained from step (3) were conducted by using the ORCA program [ 39 ] under CAM-B3LYP/def2-TZVPD, a functional which was testified to be suitable for the excited state optimization with charge transfer character, with D3 dispersion correction and GCP correction to remove artificial overbinding effects from BSSE [ 40 , 41 , 42 , 43 , 44 , 45 ]. The functional and basis set combination wB2GP-PLYP/def2-TZVPD was used in a single point energy calculation to obtain the free energy with high precision [ 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 ]. Most of the figures in this work were rendered by means of VMD 1.9.3 software [ 55 ] and the analyses were finished by using the Multiwfn 3.8(dev) code [ 56 ].…”

Synthesis of Copper Nanocluster and Its Application in Pollutant Analysis

“…In the quantitative detection of S 2− , the Cu 2+ @MPA-Cu NCs sensor presented high selectivity and good accuracy in the simulated real environment, with recovery rates ranging from 92.5% to 104.5% and RSD less than 4%. Ratio-based sensing systems for the monitoring of sulfide ions have also been established based on all Cu NCs (G-R-Cu NCs) [ 93 ]. The fluorescent probe was obtained through rapid and simple synthesis procedure and exhibited remarkable selectivity and sensitivity in the real sample.…”