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

doi:10.3390/molecules25246048

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 journal › Article › peer-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 language	English
Article number	6048
Journal	Molecules (Basel, Switzerland)
Volume	25
Issue number	24
DOIs	https://doi.org/10.3390/molecules25246048
Publication status	Published - 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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10.3390/molecules25246048Licence: CC BY

Link to publication in Scopus

Cite this

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

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.",

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AU - Hussain, Rohanah

AU - Siligardi, Giuliano

AU - Pantos, Dan

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