1. Fine-tuning synthesis of fluorescent silver thiolate nanoclusters
- Author
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Kshitij Khanna, Luciano Pilloni, Martina De Angelis, Ludovica Primitivo, Daniela Caschera, Lorenza Suber, and Giuliana Righi
- Subjects
Thermogravimetric analysis ,Materials science ,Infrared ,Biomedical Engineering ,atomic precise silver nanoparticle ,Bioengineering ,02 engineering and technology ,engineering.material ,010402 general chemistry ,Photochemistry ,01 natural sciences ,Fluorescence spectroscopy ,Nanoclusters ,Nanomaterials ,Scanning transmission electron microscopy ,General Materials Science ,synthesis silver thiolate nanocluster ,fluorescent silver thiolate nanocluster ,monolayer protected silver nanoparticle ,General Chemistry ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,Fluorescence ,0104 chemical sciences ,engineering ,Noble metal ,0210 nano-technology - Abstract
Noble metal thiolate nanoclusters are a new class of nanomaterials with molecular-like properties such as high dispersibility and fluorescence in the visible and infrared spectral region, properties highly requested in biomedicine for imaging, sensing and drug delivery applications. We report on three new silver phenylethane thiolate nanoclusters, differing for slight modifications of the preparation, i.e., the reaction solvent and the thiolate quantity, producing changes in the nanocluster composition as well as in the fluorescence behavior. All samples, excited in the range 250–500 nm, emit around 400 and 700 nm differing in the emission maxima and behavior. The silver thiolate nanoclusters have been characterized by way of C, H, S elemental analyses and Thermal Gravimetric Analysis (TGA) to determine the nanocluster composition, Scanning Transmission Electron Microscopy (STEM) to investigate the nanocluster morphology and UV-Vis and fluorescence spectroscopy to study their optical properties.
- Published
- 2021