论文部分内容阅读
罗丹明B(RhB)在 1 0mmol/LH2 SO4 中于 -0 5 9V处产生 1个单扫描极谱波 ;当有PdI2 -4 存在时 ,PdI2 -4 与RhB+主要通过静电引力形成疏水性的PdI4 2RhB缔合物分子 ;PdI4 2RhB缔合分子间由于较强的范德华力和疏水作用力可形成紫红色的、尺寸约为 2 0nm的 (PdI4 2RhB) n 纳米微粒 ,在 4 70nm处产生 1个同步散射峰 ,在 5 2 0nm处产生 1个特征共振散射峰 ;而在 -0 5 9V处的极谱峰降低。一些水溶性有机溶剂如乙醇、甲醇、丙酮等的加入可使紫红色的 (PdI4 2RhB) n 纳米微粒分解为红色PdI4 2RhB分子 ,体系的同步散射峰和共振散射峰消失 ,极谱峰和同步荧光峰增强 ,颜色恢复。紫红色 (PdI4 2RhB) n 纳米粒子的形成是导致其极谱猝灭和共振散射效应的根本原因
RhB (RhB) produced a single-sweep polarographic wave at -0.59V in 10mmol / LH2 SO4. PdI2-4 and RhB + formed mainly PdI4 by electrostatic attraction in the presence of PdI2-4 2RhB associate molecules; PdI4 2RhB association between molecules due to strong van der Waals forces and hydrophobic force can be formed purple, size of about 20nm (PdI4 2RhB) n nanoparticles, at 470nm produce a synchronization The scattering peak produced one characteristic resonance scattering peak at 5200nm, while the polarographic peak at -055V decreased. The addition of some water-soluble organic solvents such as ethanol, methanol and acetone can decompose the purple PdI4 2RhB nanoparticles into red PdI4 2RhB molecules. The simultaneous scattering peak and the resonance scattering peak disappear. The polarographic peaks and synchronous fluorescence Peak enhancement, color recovery. The formation of magenta (PdI4 2RhB) n nanoparticles is the root cause of its polarographic quenching and resonance scattering effects