Chiral detection by induced surface-enhanced Raman optical activity. Issue 52 (4th June 2021)

• Record Type: Journal Article
• Authors: Das, Moumita; Gangopadhyay, Debraj; Šebestík, Jaroslav; Habartová, Lucie; Michal, Pavel; Kapitán, Josef; Bouř, Petr
• Is Part Of: Chemical communications. Volume 57:Issue 52(2021)
• Page Start: 6388
• Page End: 6391
• Publication Date: 2021-06-04
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/d1cc01504d
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : The "sergeants-and-soldiers" principle is used for chiral detection through surface-enhanced Raman optical activity. Abstract : Combination of optical activity with surface-enhanced Raman scattering has been a dream of physical chemists for a long time. We report a measurement protocol based on silver colloids and aromatic linkers where chiral acids could be detected in concentrations of about 10 −5 M. We explain the mechanism by binding and self-assembly of the linkers into chiral aggregates on the silver surface. Following the "sergeants-and-soldiers" principle, the chirality is determined by the relatively minor acidic component. Such detection of biologically relevant molecules may be useful when other methods, such as electronic circular dichroism, are not sensitive enough. In the future, variations of the chemical structure of the linker or other conditions are needed to provide a more specific signal allowing one to better discriminate among the optically active molecules.