染料分子对硫纳米微粒共振散射光谱的影响  

Effect of Dyes on Resonance Scattering Spectrum of S Ultrafine Particles

作　　者：蒋治良[1] 江洪流[1] 刘凤志[1] 邹节明 尹文清[1] 王力生 

机构地区：[1]广西师范大学资源与环境学系,桂林541004 [2]桂林三金药业集团公司

出　　处：《应用化学》2003年第4期351-354,共4页Chinese Journal of Applied Chemistry

基　　金：广西自然科学基金 ( 0 14 4 0 0 3);广西高校科研基金资助项目

摘　　要：在聚丙烯酰胺存在下液相硫纳米微粒在 470nm处产生 1个强共振散射峰 ;在可见光范围内无吸收峰且吸收值较小。硫微粒质量浓度在 0 0 5～ 1 0mg/L范围内与I4 70nm间有良好线性关系。研究了乙醇、丙酮 ,以及溴酚蓝、溴甲基紫、结晶紫、亮绿等有机染料对硫纳米微粒共振散射的影响。结果发现 ,染料分子吸收是产生共振散射峰的一个重要原因 ;随着染料分子非辐射吸收值的增大 ,硫纳米微粒共振散射光强度降低。实验证明 ,溴酚蓝浓度在 0～ 1 0× 10 -5mol/L范围内 ,在溴酚蓝最大吸收波长 5 90nm处的ΔI590nm与溴酚蓝浓度呈线性关系。In presence of polyacrylamide(PAM) sulfur nanoparticle solutions have a maximum resonance scattering peak at 470 nm, but no absorption peak appears in visible light region. The mass concentration of sulfur particles in the range of 0 05～1 0 mg/L is linear to the resonance scattering intensity at 470 nm.The effects of dyes such as bromophenol blue(BPB), bromomethyl violet(BMV), crystal violet(CV) and brilliant green(BG), and some organic solvents such as acetone, alcohol and methanol on the resonance scattering spectra of S nanoparticle have been studied. It is found that the molecular absorption of the dyes is an important factor to produce scattering peak, and the resonance scattering intensity decreases exponentially with the concentration of the dye. At maximum absorption wavelength of590 nm, the concentration of BPB is linear to the ΔI 590 nm value in the range of0～1 0×10 -5 mol/L.

关 键 词：染料分子 硫纳米微粒 共振散射光谱法 吸收光谱 

分 类 号：TQ610.1[化学工程—精细化工]