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

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 (CD<i>i</i>) technique available at the Diamond B23 beamline. The CD<i>i</i> allowed us to increas...

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Main Authors: Dora-M. Răsădean, Tiberiu-M. Gianga, Tamás Jávorfi, Rohanah Hussain, Giuliano Siligardi, G. Dan Pantoș
Format: Article
Language:English
Published: MDPI AG 2020-12-01
Series:Molecules
Subjects:
Online Access:https://www.mdpi.com/1420-3049/25/24/6048
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author Dora-M. Răsădean
Tiberiu-M. Gianga
Tamás Jávorfi
Rohanah Hussain
Giuliano Siligardi
G. Dan Pantoș
author_facet Dora-M. Răsădean
Tiberiu-M. Gianga
Tamás Jávorfi
Rohanah Hussain
Giuliano Siligardi
G. Dan Pantoș
author_sort Dora-M. Răsădean
collection DOAJ
description 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 (CD<i>i</i>) technique available at the Diamond B23 beamline. The CD<i>i</i> 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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spelling doaj.art-8b0ef210a01d40ff836182361bbbecbc2023-11-21T01:54:16ZengMDPI AGMolecules1420-30492020-12-012524604810.3390/molecules25246048Mapping the Chiroptical Properties of Local Domains in Thin Films of Chiral Silicon Phthalocyanines by CD ImagingDora-M. Răsădean0Tiberiu-M. Gianga1Tamás Jávorfi2Rohanah Hussain3Giuliano Siligardi4G. Dan Pantoș5Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, UKDepartment of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, UKBeamline B23, Diamond Light Source, Ltd., Chilton, Didcot OX11 0DE, UKBeamline B23, Diamond Light Source, Ltd., Chilton, Didcot OX11 0DE, UKBeamline B23, Diamond Light Source, Ltd., Chilton, Didcot OX11 0DE, UKBeamline B23, Diamond Light Source, Ltd., Chilton, Didcot OX11 0DE, UKThe 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 (CD<i>i</i>) technique available at the Diamond B23 beamline. The CD<i>i</i> 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.https://www.mdpi.com/1420-3049/25/24/6048chiral thin filmsphthalocyaninessynchrotron radiationcircular dichroismimaging
spellingShingle Dora-M. Răsădean
Tiberiu-M. Gianga
Tamás Jávorfi
Rohanah Hussain
Giuliano Siligardi
G. Dan Pantoș
Mapping the Chiroptical Properties of Local Domains in Thin Films of Chiral Silicon Phthalocyanines by CD Imaging
Molecules
chiral thin films
phthalocyanines
synchrotron radiation
circular dichroism
imaging
title Mapping the Chiroptical Properties of Local Domains in Thin Films of Chiral Silicon Phthalocyanines by CD Imaging
title_full Mapping the Chiroptical Properties of Local Domains in Thin Films of Chiral Silicon Phthalocyanines by CD Imaging
title_fullStr Mapping the Chiroptical Properties of Local Domains in Thin Films of Chiral Silicon Phthalocyanines by CD Imaging
title_full_unstemmed Mapping the Chiroptical Properties of Local Domains in Thin Films of Chiral Silicon Phthalocyanines by CD Imaging
title_short Mapping the Chiroptical Properties of Local Domains in Thin Films of Chiral Silicon Phthalocyanines by CD Imaging
title_sort mapping the chiroptical properties of local domains in thin films of chiral silicon phthalocyanines by cd imaging
topic chiral thin films
phthalocyanines
synchrotron radiation
circular dichroism
imaging
url https://www.mdpi.com/1420-3049/25/24/6048
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