细胞膜伪装的纳米载体用于光热治疗的研究进展

纳米载体一直是肿瘤精准治疗的重要研究领域。其中以细胞膜伪装的纳米药物载体作为一种新颖的药物载体平台,在近年来已成为药物传递领域的研究热点。本文综述了不同种类细胞膜伪装的纳米载体应用于光热治疗的最新进展。将细胞膜与纳米材料结合起来,可进一步推进纳米载体的研究,这将对相关领域的发展产生重要影响。     

金属-有机框架材料在催化炔烃半氢化反应中的应用

炔烃的半氢化反应在有机合成和精细化工领域具有重要地位,如何同时兼顾反应活性和选择性仍存在很大挑战。目前已有多种材料被应用于相关催化,其中金属-有机骨架(MOFs)及其复合材料受到越来越多关注。MOFs的多孔性、结构可修饰性、空间限域效应、协同催化等优点,使其在炔烃的半氢化反应中表现出独特的应用前景。本文综述了MOFs及其复合材料在炔烃的半氢化反应生成烯烃过程中的应用,主要根据活性催化位点的类别展开介绍,重点阐述了不同体系中催化效果和结构之间的关系。     

Quasi-Hexagonal Ordered Arrays of FePt Nanoparticles Prepared by a Micellar Method

Hexagonally ordered arrays of magnetic FePt nanoparticles on Si substrates are prepared by a self assembly of diblock copolymer PS-b-P2VP in toluene, a dip coating process and finally plasma treatment. The as-treated FePt nanoparticles are covered by an oxide layer that can be removed by a 40 s Ar＋ sputtering. The effects of the sequence of adding salts on the composition distribution are revealed by x-ray photoelectron spectroscopy measurements. No particle agglomeration is observed after 600℃annealing for the present ordered array of FePt nanoparticles, which exhibits advantages in patterning FePt nanoparticles by a micellar method. Moreover, magnetic properties of the annealed FePt nanoparticles at room temperature are investigated by a vibrating sample magnetometer.