A luminescent Cu₄ cluster film grown by electrospray deposition: a nitroaromatic vapour sensor

Abstract

We present the fabrication and use of a film of carborane-thiol protected tetranuclear copper cluster with characteristic orange luminescence using ambient electrospray deposition (ESD). Charged microdroplets of the clusters produced...

Cysteine-Protected Antibacterial Spheroids of Atomically Precise Copper Clusters for Direct and Affordable Arsenic Detection from Drinking Water

“…The recorded survey spectrum displayed all the elements in the Cu 17 NCs (Figure S6a). Detailed scans reveal peaks corresponding to Cu 2p 3/2 and Cu 2p 1/2 at 932.9 and 952.8 eV, respectively, indicating zero oxidation state of Cu in the NCs (Figure c) . Upon interaction with As 3+ and As 5+ , Cu 2p 3/2 peak shifted toward lower binding energy (931.3 and 931.1 eV, respectively), indicating oxidation of Cu.…”

“…Detailed scans reveal peaks corresponding to Cu 2p 3/2 and Cu 2p 1/2 at 932.9 and 952.8 eV, respectively, indicating zero oxidation state of Cu in the NCs (Figure 2c). 30 Upon interaction with As 3+ and As 5+ , Cu 2p 3/2 peak shifted toward lower binding energy (931.3 and 931.1 eV, respectively), indicating oxidation of Cu. Similar shifts were observed in the Cu 2p 1/2 peak upon exposure to As 3+ and As 5+ (from 952.8 to 951.3 and 950.9 eV, respectively), along with substantial broadening, confirming oxidation.…”

“…While these peaks cannot be assigned in greater detail in the absence of the crystal structure, the observed peak shift and intensity reduction suggest a discernible alteration in the microcrystalline nature of Cu 17 NCs. 30 Impact of As on the Morphology of CASs. The formation of CuNC aggregates induced by solvophobic effect was monitored through dynamic light scattering (DLS) studies.…”

Metal Nanoclusters in Point-of-Care Sensing and Biosensing Applications

“…419 Due to their 3D highly stable construction with delocalized electrons, carborane-thiol can be interesting frameworks in stabilizing luminescence CuNCs. 420 Jana et al synthesized three distinct carborane-thiol-stabilized CuNCs wih different lignads with improved thermal stability. In this study, they produced Cu 4 @oCBT, Cu 4 @mCBT, and Cu 4 @ ICBT which represent quantum yields of 81%, 59%, and 18% individually.…”

“…Using MOFs can solve these issues where the core CuNCs can embeded by a rigid and highly stable structure of MOFs, which can thus protect CuNCs from oxygen, air, and other harsh conditions . Due to their 3D highly stable construction with delocalized electrons, carborane-thiol can be interesting frameworks in stabilizing luminescence CuNCs . Jana et al synthesized three distinct carborane-thiol-stabilized CuNCs wih different lignads with improved thermal stability.…”