2020同步年報

S oft matter, comprising complicated systems, generally assembles into mesostructures between the microscopic and macroscopic scales. Probing a relation between the characteristics and the interactions of these mesostructures could efficiently determine their functions. Small-angle and wide-angle X-ray scattering ( TLS 23A and TPS 25A ) and X-ray photoelectron spectroscopy ( TLS 24A ) can capture information about self-assembled hierarchical structures from angstrom to submicrometre scales. This section high- lights four articles, in terms of orientation of π-conjugated polymer chains, iron-coordinating semiconducting poly- mers, hierarchical superhelices and polymer crystallization, extracted from publications of NSRRC users in 2020. The developments of an understanding about both the meso- structures and their functionality are presented for medical and pharmaceutical research, polymer engineering and optoelectronic devices from the use of X-ray scattering, diffraction and photoelectron spectroscopy. (by Wei-Tsung Chuang) Soft Matter