This research mainly analyzes the influence of foreign investment in the era of big data on China's economic growth, in the process of analyzing the impact of foreign investment on the national economy, based on the analysis of the current situation of foreign investment and error-correction model, etc., through the correlation coefficient matrix to determine the variables data needed to fit the model; after fitting the model, the residual model is extracted, and the stationarity of the residual sequence is tested . On the basis of the above, this paper analyzes the difference of foreign direct investment in different regions, combined with the coastal areas and central region model and actual situation analysis, analyzes the two foreign direct investment (FDI) development speeds, base development speed, and average development speed, at the same time for the two regions in 2017; the specific direction of FDI do a detailed analysis. Finally, a series of conclusions are obtained.
The kinetic isotope effect (KIE) is beneficial to improve the performance of luminescent molecules and relevant light-emitting diodes. In this work, the influences of deuteration on the photophysical property and stability of luminescent radicals are investigated for the first time. Four deuterated radicals based on biphenylmethyl, triphenylmethyl, and deuterated carbazole were synthesized and sufficiently characterized. The deuterated radicals exhibited excellent redox stability, as well as improved thermal and photostability. The appropriate deuteration of relevant C-H bonds would effectively suppress the non-radiative process, resulting in the increase in photoluminescence quantum efficiency (PLQE). This research has demonstrated that the introduction of deuterium atoms could be an effective pathway to develop high-performance luminescent radicals.
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