Vinnacombe-Willson Gail A, Chiang Naihao, Weiss Paul S, Tolbert Sarah H, Scarabelli Leonardo
Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, United States.
California NanoSystems Institute, University of California, Los Angeles, Los Angeles, California 90095, United States.
J Chem Educ. 2021 Feb 9;98(2):546-552. doi: 10.1021/acs.jchemed.0c01150. Epub 2020 Dec 23.
Gold nanoparticles are exciting materials in nanotechnology and nanoscience research and are being applied across a wide range of fields including imaging, chemical sensing, energy storage, and cancer therapies. In this experiment, students will synthesize two sizes of gold nanospheres (~20 nm and ~100 nm) and will create gold nanostars utilizing a seed-mediated growth synthetic approach. Students will compare how each sample interacts differently with light (absorption and scattering) based on the nanoparticles' size and shape. This experiment is ideal for high-school and early undergraduate students since all reagents are non-toxic, affordable, and no special characterization equipment is required.
金纳米颗粒是纳米技术和纳米科学研究中令人兴奋的材料，正在广泛应用于包括成像、化学传感、能量存储和癌症治疗等众多领域。在本实验中，学生将合成两种尺寸的金纳米球（约20纳米和约100纳米），并采用种子介导生长合成方法制备金纳米星。学生将根据纳米颗粒的尺寸和形状，比较每个样品与光的相互作用方式（吸收和散射）有何不同。本实验非常适合高中生和本科低年级学生，因为所有试剂无毒、价格低廉，且无需特殊的表征设备。
