Mapping the Chiroptical Properties of Local Domains in Thin Films of Chiral Silicon Phthalocyanines by CD Imaging

Dora M. Răsădean, Tiberiu M. Gianga, Tamás Jávorfi, Rohanah Hussain, Giuliano Siligardi, Dan Pantos

Research output: Contribution to journalArticlepeer-review

Abstract

The first example of uniformly chiral thin films of silicon phthalocyanines (SiPcs) are reported. The local domains of the films are mapped using circular dichroism (CD) imaging (CDi) technique available at the Diamond B23 beamline. The CDi allowed us to increase the spatial resolution up to 525× when compared with benchtop spectrometers. The results indicate formation on-surface of chiral and stable supramolecular assemblies with homogenous distribution. Chemical functionalization and solvent choice for deposition allow controllable chiroptical properties to be obtained. The method and technique reported in this work could be applied to prepare and characterize a wide variety of chiral thin films.

Original languageEnglish
Article number6048
JournalMolecules (Basel, Switzerland)
Volume25
Issue number24
DOIs
Publication statusPublished - 21 Dec 2020

Keywords

  • chiral thin films
  • circular dichroism
  • imaging
  • phthalocyanines
  • synchrotron radiation

ASJC Scopus subject areas

  • Analytical Chemistry
  • Chemistry (miscellaneous)
  • Molecular Medicine
  • Pharmaceutical Science
  • Drug Discovery
  • Physical and Theoretical Chemistry
  • Organic Chemistry

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