Tip-Enhanced Raman Spectroscopy: A Tool for Nanoscale Chemical and Structural Characterization of Biomolecules
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Article de revue
Este ítem está publicado en
Chemphyschem. 2018, vol. 19, n° 1, p. 8-18
Resumen en inglés
Due to its high molecular sensitivity and spatial optical resolution down to sub-nanometer values, tip-enhanced Raman spectroscopy (TERS) has emerged as a powerful microscopy technique for nanoscale characterization. ...Leer más >
Due to its high molecular sensitivity and spatial optical resolution down to sub-nanometer values, tip-enhanced Raman spectroscopy (TERS) has emerged as a powerful microscopy technique for nanoscale characterization. Progress in TERS instrumentation and in the manufacturing of efficient TERS tips allow for chemical and structural analysis under various experimental conditions (different wavelengths, substrates, and surrounding media). Many biological species have been examined by using this technique. Nucleic acids (individual nucleobases, DNA, and RNA) can show specific TERS features that reveal their composition, conformation, and defects. TERS studies on peptides and proteins (such as amyloid fibrils) provide relevant information on their morphology and structure, leading to valuable insight to their functions and behavior. Finally, lipid layers and membranes, viruses, bacteria, and cells can also be finely characterized. Generalizing TERS measurements in liq- uid medium to study biological systems is the main future challenge.< Leer menos
Palabras clave en inglés
biomolecules
proteins
Raman spectroscopy
tip-enhanced Raman spectroscopy (TERS)
structure elucidation
Centros de investigación