So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Mishra, Dinesh; Wang, Sisi; Jin, Zhicheng; Xin, Yan; Lochner, Eric; Mattoussi, Hedi researched the compound: 11-Bromoundecanoic acid( cas:2834-05-1 ).Formula: C11H21BrO2.They published the article 《Highly fluorescent hybrid Au/Ag nanoclusters stabilized with poly(ethylene glycol)- and zwitterion-modified thiolate ligands》 about this compound( cas:2834-05-1 ) in Physical Chemistry Chemical Physics. Keywords: gold silver nanocluster preparation fluorescence. We’ll tell you more about this compound (cas:2834-05-1).
The authors report a simple strategy to grow highly fluorescing, near-IR-emitting nanoclusters (NCs) made of bimetallic Au/Ag cores, surface capped with a mixture of triphenylphosphine and various monothiol ligands. The ligands include short chain aliphatic monothiols, which yields hydrophobic NCs, and poly(ethylene glycol)- or zwitterion-appended monothiols, which yield NCs that are readily dispersible in buffer media. The reaction uses well-defined triphenylphosphine-protected Au11 clusters (as precursors) that are reacted with Ag(I)-thiolate complexes. The prepared materials are small (diameter <2 nm, as characterized by TEM) with emission peak at 730-760 nm and long lifetime (∼8-12 μs). The quantum yield measured for these materials in both hydrophobic and hydrophilic dispersions is ∼40%. High-magnification dark field STEM and XPS measurements show both metal atoms in the core, with measured binding energies that agree with reported values for nanocluster materials. The NIR emission combined with high quantum yield, small size, colloidal stability in buffer media and ease of surface functionalization afforded by the coating, make these materials suitable for studying fundamental questions and potentially useful for biol. sensing and imaging applications. Here is just a brief introduction to this compound(2834-05-1)Formula: C11H21BrO2, more information about the compound(11-Bromoundecanoic acid) is in the article, you can click the link below.
Reference:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI