Bridging length scales in organic mixed ionic-electronic conductors through internal strain and mesoscale dynamics

Understanding structural and dynamic properties of inherently disordered systems at the mesoscale is crucial. This is particularly important in organic mixed ionic-electronic conductors (OMIECs), which undergo significant and complex structural changes when operated in electrolyte. In this study, we investigate the mesoscale strain, reversibility, and dynamics of a model OMIEC material under external electrochemical potential using operando X-ray photon correlation spectroscopy. Our results reveal mesoscale strain and structural hysteresis that depend on the sample's cycling history, establishing a comprehensive kinetic sequence bridging the macroscopic and microscopic behaviors of OMIECs. Furthermore, we uncover equilibrium and non-equilibrium dynamics of charge carriers and material doping states, highlighting the unexpected coupling between charge carrier dynamics and mesoscale order. These findings advance our understanding of the structure-dynamics-function relationships in OMIECs,..., , , # Bridging length scales in organic mixed ionic-electronic conductors through internal strain and mesoscale dynamics

In this dataset, we have incorporated the initial scattering patterns collected at beamline 8-ID-I (Advanced Photon Source, Argonne National Laboratory). The X-ray energy used for the measurements was 10.92 keV. The data was obtained through operando grazing incidence X-ray photon correlation spectroscopy (GIXPCS) using an optimized cone cell.

## Contact Information

Name: R. Wu

Affiliations: Department of Biomedical Engineering, Northwestern University, Evanston, IL, USA

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## Description of the data and file structure

The dataset is available in either the original H5 file format or a supplementary type encapsulated within zip files. These zip files encompass both the H5 files and data subjected to primary treatment.

The experimental conditions are detailed within the filename. To illustrate with an example labeled \"D224_Acid_PEDOT_Sample5_RbBr...