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Multistimuli responsive soft materials are urgently needed in many different fields, such as anticounterfeiting technology and microdroplet manipulation. Herein, the straightforward preparation of fluorescigenic magnetofluids by the introduction of the paramagnetic metal ions Gd3+, Tb3+, and Dy3+ into alkylimidazolium-based ionic liquids (ILs) is reported. Bright visible fluorescence was observed under UV irradiation for Tb- and Dy-containing ILs. Either pure samples or papers coated with these ILs exhibited pronounced magnetic responses. Consistent and stable structures of these salts were confirmed by systematical characterizations. Because of the competition of nitrate ligands, structural water in the precursors was eliminated easily under a vacuum. For Tb- and Dy-containing ILs, featured electronic transitions were observed and were assigned in the fluorescence spectra. The long lifetimes of these transitions were also confirmed. The field-cooling experiments showed that all of these ILs display paramagnetism at room temperature. At low temperature, small deviations from the Curie Law indicate the occurrence of antiferromagnetic coupling and spin canting in these ILs. Temperature-induced differences in magnetic properties were further verified by field-dependent magnetic susceptibility measurements carried out at 5 and 300 K.
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INTRODUCTION: Preoperative computed tomography (CT)-guided localization is commonly employed to facilitate video-assisted thoracoscopic surgery (VATS)-guided diagnostic wedge resection of pulmonary nodules (PNs). AIM: The present meta-analysis was conducted with the goal of better evaluating the feasibility, safety, and clinical efficacy of preoperative CT-guided localization for multiple PNs (MPNs). MATERIAL AND METHODS: PubMed, Embase, and the Cochrane Library databases were reviewed in order to identify all relevant studies published as of June 2020. Random effects modeling was then used to evaluate the pooled data. The meta-analysis was conducted using Stata v12.0 software. RESULTS: Eight relevant studies were identified for inclusion in the present meta-analysis. In total, 345 patients with 799 PNs were treated with preoperative CT-guided localization and subsequent wedge resection. The overall pooled technical success rate based on the nodules and patients was calculated to be 97% (95% confidence interval (CI): 0.94-0.99) and 92% (95% CI: 0.86-0.97), respectively. The overall pooled incidence rate of complications was calculated to be 40% (95% CI: 0.16-0.63). Significant heterogeneity was observed among the studies for all the parameters described above (I2 = 74.5%, 77.7%, and 96.3%, respectively). No significant differences were detected in the technical success of localization and incidence of complications between coil and hook-wire groups. The risk of publication bias in the reporting of technical success rate of localization based on both nodules and patients was found to be high (p < 0.001 and < 0.001, respectively). CONCLUSIONS: Preoperative CT-guided localization may be effective in guiding VATS-guided wedge resection in patients with MPNs.