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AimsTo investigate loneliness, depression and sleep quality in patients with Type 2 Diabetes (T2DM) and to examine the mediating role of depression between loneliness and sleep quality among this group of patients with T2DM.DesignA cross‐sectional study.MethodsA group of T2DM patients was recruited from a tertiary hospital affiliated with a university in Wuhu City, Anhui Province from May to October 2021 by convenient sampling. Pearson correlation analysis and structural equation modelling were used for data analysis in this study.ResultsThe direct effect of loneliness on sleep quality was not statistically significant, but the indirect effect of depression on sleep quality was statistically significant. Depression mediated the relationship between loneliness and sleep quality. Depression can affect emotional health and reduce sleep quality. We should reduce the loneliness of patients, prevent the occurrence of depression and improve the quality of sleep.

Precise construction of stimuli-responsive MOF (SRMOF) materials with excellent catalytic properties is a daunting challenge. Herein, two flexible ligands 4,4′,4″-(nitrilotris(methylene))tribenzoic acid (H3L) and 1,4-bis((1H-imidazol-1-yl)methyl)benzene (BMB) have been used to construct a Cd-MOF (AQNU-5, AQNU named Anqing Normal University) containing three-dimensional pores and rod SBUs. Due to the flexible ligand-induced dynamic framework, AQNU-5 exhibits structural flexibility with stimuli-responsive properties in photocatalytic CO2 reduction, which depends on both temperature and solvent. The results showed that the CO2-to-CO reduction rate reached an optimum of 56.2 μmol g–1 h–1 at 150 °C without the addition of any photosensitizer. Interestingly, this dynamic response is reversible, with the skeleton remaining unchanged from the parent structure before and after the catalytic reaction. The strategy of using flexible ligands in this work may provide a unique opportunity to obtain novel crystal framework materials with desirable properties.