Department of Laser Studies, School of Physics, Madurai Kamaraj University, Madurai 625 021, India.
Department of Laser Studies, School of Physics, Madurai Kamaraj University, Madurai 625 021, India.
Spectrochim Acta A Mol Biomol Spectrosc. 2014;121:276-81. doi: 10.1016/j.saa.2013.10.079. Epub 2013 Oct 31.
Nanoparticles of noble metals belong to the most extensively studied colloidal systems in the field of nanoscience and nanotechnology. Silver nanoparticles of different sizes have been prepared with the chemical reduction method using sodium borohydride and characterized using optical absorption technique. Using optical absorption and fluorescence emission studies, the photo physical properties of 2-amino-3-bromo1, 4-naphthoquinone (ABNQ) on silver nanoparticle have been studied. Concentration of the silver nanoparticle has been evaluated and the particle size dependent interaction between silver nanoparticles and ABNQ has been studied. The fluorescence quantum yield of ABNQ with and without silver nanoparticles has been calculated. The Stern-Volmer quenching constants and the molar absorptivity have been evaluated.
贵金属纳米粒子属于纳米科学和纳米技术领域中研究最广泛的胶体系统之一。使用化学还原法，利用硼氢化钠制备了不同尺寸的银纳米粒子，并采用光学吸收技术进行了表征。通过光学吸收和荧光发射研究，研究了 2-氨基-3-溴-1,4-萘醌（ABNQ）在银纳米粒子上的光物理性质。评估了银纳米粒子的浓度，并研究了银纳米粒子与 ABNQ 之间的尺寸依赖性相互作用。计算了有和没有银纳米粒子时 ABNQ 的荧光量子产率。评估了 Stern-Volmer 猝灭常数和摩尔吸光率。
