Preparation and application of surface enhanced Raman scattering substrate synthesized from single walled carbon nanotubes and silver nanoparticlesEI北大核心CSCD

By hydrothermal synthesis, silver nanoparticles (AgNPs) arranged on single-walled carbon nanotubes (SWCNTs) uniformly, and a SiO2/CNTs/AgNPs surface enhanced Raman scattering (SERS) substrate with composite open structure was prepared. The synthesized SiO2/CNTs/AgNPs were characterized by transmission electron microscopy (TEM. Using rhodamine 6G(R6G) as the probe molecule, the enhancement factor (EF) was 1.23×108, and the standard deviation was 2.31. Taking the phenol red, a common water pollutant, as the practical sample, the concentration of phenol red in the range of 1×10-4 -1×10-10 mol/L had a great exponential fitting relationship with its Raman signal intensity at 1153 cm-1 and 1441 cm-1, and the correlation coefficient (R2) was 0.99991. The substrate can realize the qualitative and quantitative detection of practical samples. © 2023, Youke Publishing Co.,Ltd. All rights reserved.     

1,4-氮硼杂芳环在有机和过渡金属催化中的应用（英文）

总结了1,4-氮硼杂芳环在有机和过渡金属催化中的最新进展,涵盖三部分内容:一是简要介绍了1,4-氮硼杂芳环的发展历史;二是重点介绍了1,4-氮硼杂芳环作为有机小分子催化剂在光致氧化三芳基膦中的应用;三是详细阐述了1,4-氮硼杂芳环作为配体在钯催化的烯炔的立体选择性硼化反应中的应用.此外,对这一领域的未来发展进行了展望.     

三氟甲基烯烃的选择性C—F键活化最新进展（英文）

三氟甲基的选择性碳氟键活化是获得偕二氟类化合物的重要途径.鉴于三氟甲基烯烃在合成上的重要性以及反应选择性的多样性,近年来利用这类化合物的选择性碳氟键活化引起了极大的关注.综述了这一领域的研究进展,主要包括亲核加成/脱氟反应(S_N2’类型)、酸促进的脱氟傅克芳基化反应、(形式)原位脱氟官能团化反应以及过渡金属催化的迁移插入/脱氟反应.