Structural Transition-Induced Raman Enhancement in Bioinspired Diphenylalanine Peptide Nanotubes.

Content Provider	Europe PMC
Author	Almohammed, Sawsan Fularz, Agata Kanoun, Mohammed Benali Goumri-Said, Souraya Aljaafari, Abdullah Rodriguez, Brian J. Rice, James H.
Copyright Year	2022
Abstract	Semiconducting materialsare increasingly proposed as alternativesto noble metal nanomaterials to enhance Raman scattering. We demonstratethat bioinspired semiconducting diphenylalanine peptide nanotubesannealed through a reported structural transition can support Ramandetection of 10–7 M concentrations for a range ofmolecules including mononucleotides. The enhancement is attributedto the introduction of electronic states below the conduction bandthat facilitate charge transfer to the analyte molecule. These resultsshow that organic semiconductor-based materials can serve as platformsfor enhanced Raman scattering for chemical sensing. As the sensoris metal-free, the enhancement is achieved without the introductionof electromagnetic surface-enhanced Raman spectroscopy.
ISSN	19448244
Journal	ACS Applied Materials & Interfaces
Volume Number	14
PubMed Central reference number	PMC8931724
Issue Number	10
PubMed reference number	35254049
e-ISSN	19448252
DOI	10.1021/acsami.1c22770
Language	English
Publisher	American Chemical Society
Publisher Date	2022-03-07
Access Restriction	Open
Rights License	Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/). © 2022 The Authors. Published by American Chemical Society
Subject Keyword	semiconducting materials FFNTs Raman scattering surface-enhanced Ramanspectroscopy HOMO LUMO
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Medicine Materials Science