CAJ | 학술논문

在0.1 mol/L H2SO4介质中,丁基罗丹明B(RBB)在-0.59伏产生1个单扫描极谱峰.当有AuI4-存在时,AuI4-与RBB+主要通过静电引力形成疏水性的AuI4-2RBB缔合物分子.AuI4-2RBB存在较强的分子间作用力和疏水作用力而生成紫红色的(AuI4-RBB)n纳米微粒,在470nm处产生1个瑞利散射峰,在610nm处产生1个共振瑞利散射峰;而在-0.59伏处的极谱峰降低.这是由于该紫红色复合纳米微粒形成所致.当纳米微粒体系加入乙醇后,体系的瑞利散射峰和共振瑞利散射峰消失,极谱峰、同步荧光峰和颜色恢复,由于乙醇而致使紫红色的(AuI4-RBB)n纳米微粒分解为红色AuI4-RBB分子.研究结果表明,紫红色(AuI4-RBB)n纳米粒子的形成是其极谱猝灭和共振瑞利散射效应的根本原因.
재0.1 mol/L H2SO4개질중,정기라단명B(RBB)재-0.59복산생1개단소묘겁보봉.당유AuI4-존재시,AuI4-여RBB+주요통과정전인력형성소수성적AuI4-2RBB체합물분자.AuI4-2RBB존재교강적분자간작용력화소수작용력이생성자홍색적(AuI4-RBB)n납미미립,재470nm처산생1개서리산사봉,재610nm처산생1개공진서리산사봉;이재-0.59복처적겁보봉강저.저시유우해자홍색복합납미미립형성소치.당납미미립체계가입을순후,체계적서리산사봉화공진서리산사봉소실,겁보봉、동보형광봉화안색회복,유우을순이치사자홍색적(AuI4-RBB)n납미미립분해위홍색AuI4-RBB분자.연구결과표명,자홍색(AuI4-RBB)n납미입자적형성시기겁보졸멸화공진서리산사효응적근본원인.
There is a polarographic peak at-0.59 V vs. SCE for rhodamine B butyl ester(RBB)in the medium of 0.1 mol/L H2SO4.The AuI-4 and RBB+ were combined into a hydrophobic association molecule of AuI4-RBB by means of electrostatic attraction.There were stronger Van de Waals forces and hydrophobic forces among AuI4-RBB molecules.So it formed (AuI4-RBB)n association nanoparticles in red-violet that exhibited a strong resonance rayleigh scattering(RRS)peak at 610 nm and the RRS effect.The polargraphic quenching at-0.58 V was owing to that the RBB molecules could not be reduced at the surface of DME,which was in the body of the association nanoparticles.The (AuI4-RBB)n association nanoparticles could be decomposed into AuI4-RBB association molecules by alcohol.So,the scattering peaks disappeared.The polarographic peak and the fluorescence peak re-appeared.The color comes back from the red-violet to the red.The results demonstrated that the formation of (AuI4-RBB)n association nanoparticles leaded to its polarographic quenching effect and the RRS effect.