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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.

SUBMITTER: Rasadean DM

PROVIDER: S-EPMC7767354 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature

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

Răsădean Dora-M DM Gianga Tiberiu-M TM Jávorfi Tamás T Hussain Rohanah R Siligardi Giuliano G Pantoș G Dan GD

Molecules (Basel, Switzerland) 20201221 24

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 ...[more]

PMID: 33371353

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