Infrared Vibrational Spectroscopy of Functionalized Atomic Force Microscope Probes using Resonantly Enhanced Infrared Photoexpansion Nanospectroscopy

Mingzhou Jin, Mikhail A. Belkin

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Reported is the measurement of infrared absorption spectra of 4-nitrothiophenol and hydroxyl-terminated hexa(ethylene glycol) molecules at apices of functionalized atomic force microscope (AFM) probes using resonantly enhanced infrared photoexpansion nanospectroscopy, also known as resonantly enhanced AFM-IR technique. The experiment demonstrates the applicability of the AFM-IR technique to perform spectroscopy of only a few tens of molecules on AFM tip apices and demonstrates the potential of the AFM-IR technique to perform vibrational spectroscopic studies of chemical reactions and molecular conformational changes on the apices of functionalized AFM tips.

Original languageEnglish
Article number1900018
JournalSmall Methods
Volume3
Issue number10
DOIs
StatePublished - 1 Oct 2019
Externally publishedYes

Keywords

  • AFM-IR
  • functionalized probes
  • infrared spectroscopy
  • nanospectroscopy
  • self-assembled monolayers

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