Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2018 Aug 7;6:330. doi: 10.3389/fchem.2018.00330

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

Copyright © 2018 Rambukwella, Sakthivel, Delcamp, Sementa, Fortunelli and Dass.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

PMC Copyright notice

Ligand effect on the common Au_n(SG)_m crude nanocluster mixture. (a) Upon thermochemical treatment on Au_n(SG)_m kinetic product, with aliphatic ligand HSCH₂CH₂Ph, aromatic ligand HSPh-tBu and bulky ligand HS-tBu produce, monodisperse Au₃₈(SCH₂CH₂Ph)₂₄, Au₃₆(SPh-tBu)₂₄, and Au₃₀(S-tBu)₁₈ NMs, respectively. Corresponding assembly of crystal structures are shown to illustrate different core geometry and ligand environments (red - core Au, green-dimeric staple Au and monomeric staple Au, yellow–staple S and bridging S). (b) Corresponding UV-Vis-NIR absorption spectra illustrate the signature absorbance features unique to each individual NMs. (c) MALDI-MS of the core-size converted final products namely, Au₃₈(SCH₂CH₂Ph)₂₄, Au₃₆(SPh-tBu)₂₄ and Au₃₀(S-tBu)₁₈ NMs. Analytes were intentionally fragmented to demonstrate Au₄(SR)₄ loss, that is prominent in all three NMs.