Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, UK.
Beamline B23, Diamond Light Source, Ltd., Chilton, Didcot OX11 0DE, UK.
Molecules. 2020 Dec 21;25(24):6048. doi: 10.3390/molecules25246048.
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) technique available at the Diamond B23 beamline. The CD 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.
首次报道了均匀手性硅酞菁（SiPc）薄膜的实例。利用在 Diamond B23 光束线上提供的圆二色性（CD）成像（CD）技术对薄膜的局部畴进行了映射。与台式光谱仪相比，CD 使我们能够将空间分辨率提高到 525×。结果表明，在表面形成了具有均匀分布的手性和稳定的超分子组装体。化学功能化和沉积用溶剂的选择允许获得可控的手性光学性质。本工作中报道的方法和技术可用于制备和表征各种手性薄膜。
