Polyvinyl Acetate-Based Polymer Host for Optical and Far-Infrared Spectroscopy of Individualized Nanoparticles: Article No. 034701

Henry Wladkowski, Julian Duarte, Shashank Nandyala, Joshua Walker, Subash Kattel, Jeffrey Blackburn, Jeffrey Fagan, Jon Pikal, William Rice

Research output: Contribution to journalArticlepeer-review

2 Scopus Citations

Abstract

Preparation techniques for producing films of individualized solution-dispersed nanoparticles (NPs) for optical spectroscopy are often technically challenging and tailored for a specific NP system. In this work, we present a rapid, easy, and economical technique for producing polyvinyl acetate (PVAc)-based NP-polymer films on the order of 100’s of micrometers thick that exhibit high uniformity, low aggregation, excellent optical transparency, and low terahertz absorption. In addition, we find that these films are robust at cryogenic temperatures and have a high laser damage threshold of 0.3 TW cm-2, which make them suitable for pulsed laser measurements. We show that free-standing, flexible, PVAc films can incorporate both one-dimensional single-wall carbon nanotubes (SWCNTs) and zero-dimensional Au NPs. Using absorbance, Raman scattering, and photoluminescence excitation spectroscopy, we observe that SWCNT individualization is maintained, and minimized polymer strain imposed, when the nanotubes are transitioned from the solution to the polymer host. This PVAc-based polymer host presents researchers with a straightforward method for producing free-standing and flexible NP films with low aggregation.
Original languageAmerican English
Number of pages9
JournalJournal of Applied Physics
Volume129
Issue number3
DOIs
StatePublished - 2021

NREL Publication Number

  • NREL/JA-5K00-78397

Keywords

  • carbon nanotubes
  • flexible
  • optical spectroscopy
  • polymers
  • solar-photochemistry
  • terahertz
  • thin films

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