Abstract
Gold nanoclusters (AuNCs), with diameters less than 2 nanometers, have particular fluorescent properties. These nanoclusters can be prepared by microwave-assisted synthesis using BSA (bovine serum albumin) as a template [1]. During the synthesis, Au(III) ions are reduced to Au(I) or Au(0), which are bonded to BSA, forming, thus, Au(I)-BSA complexes and/or AuNCs-BSA, respectively. Here, femtosecond-stimulated Raman spectroscopy (FSRS), an ultrafast nonlinear optical technique, is used to study the vibrational structure of Au(I)-BSA complexes and AuNCs-BSA. FSRS has time resolution comparable to the vibrational period of molecular movements (ps to fs) and energy resolution less than 10 cm−1. Three laser pulses are exploited in a typical FSRS experiment: actinic pulse, Raman pulse and probe pulse [2]. According to our preliminary results, FSRS represents a very promising tool in the investigation of Au(I)-BSA complexes and AuNCs-BSA systems.
Supplementary Materials
The following supporting information can be downloaded at: https://www.mdpi.com/article/10.3390/materproc2022009023/s1. Reference [3] are cited in the supplementary materials.
Author Contributions
Conceptualization, V.S., M.K. and K.Š.; Methodology, V.S., M.K. and K.Š.; Software, V.S., M.K. and K.Š.; Validation, K.Š., V.S. and M.K.; Formal Analysis, V.S.; Investigation, V.S.; Resources, K.Š.; Data Curation, V.S. and M.K.; Writing—Original Draft Preparation, V.S.; Writing—Review & Editing, V.S., M.K. and K.Š.; Visualization, V.S.; Supervision, K.Š.; Project Administration, K.Š.; Funding Acquisition, K.Š. All authors have read and agreed to the published version of the manuscript.
Funding
This research was funded by Grant Agency of the Czech Republic, grant number 19-03207S and IGA_PřF_2022_003.
Conflicts of Interest
The authors declare no conflict of interest.
References
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