CAJ | 학술논문

合成了以β-环糊精为主体,罗丹明B及番红花红T为客体的包合物.用红外光谱、荧光光谱、共振瑞利散射光谱和差示扫描量热谱研究了β-环糊精与染料的包合机理.实验结果表明:β-环糊精与客体分子分别形成了1:1的包合物,客体分子进入β-环糊精分子的疏水性空腔内,当β-环糊精加入到一定浓度的客体溶液中时,罗丹明B体系的荧光强度和共振瑞利散射强度减弱,而番红花红T体系的荧光强度和共振瑞利散射强度增强.还通过荧光光谱法及共振瑞利散射光谱法分别测定了15、25和35 ℃ 3个不同温度时染料与β-环糊精包合体系的稳定常数.结果表明:包合物的形成主要取决于β-环糊精与客体分子的分子结构及两者作用力的大小,β-环糊精空腔大小与客体分子或其某些基团的大小越接近,越容易包合,包合物的稳定常数就越大.包合物的表观热力学常数显示,在上述包合体系反应的推动力是疏水作用力.
합성료이β-배호정위주체,라단명B급번홍화홍T위객체적포합물.용홍외광보、형광광보、공진서리산사광보화차시소묘량열보연구료β-배호정여염료적포합궤리.실험결과표명:β-배호정여객체분자분별형성료1:1적포합물,객체분자진입β-배호정분자적소수성공강내,당β-배호정가입도일정농도적객체용액중시,라단명B체계적형광강도화공진서리산사강도감약,이번홍화홍T체계적형광강도화공진서리산사강도증강.환통과형광광보법급공진서리산사광보법분별측정료15、25화35 ℃ 3개불동온도시염료여β-배호정포합체계적은정상수.결과표명:포합물적형성주요취결우β-배호정여객체분자적분자결구급량자작용력적대소,β-배호정공강대소여객체분자혹기모사기단적대소월접근,월용역포합,포합물적은정상수취월대.포합물적표관열역학상수현시,재상술포합체계반응적추동력시소수작용력.
A series of inclusion complexes with β-cyclodextrin (β-CD) were synthesized and studied by FT-IR, fluorescence spectrometry, resonance Rayleigh scattering spectrometry and dif-ferential scanning caloritnetry. The guest molecules of rhodamine B and safranine T could enter the hydrophobic cavity of β-CD. When the β-CD was added into the guest solution, its fluores-cence intensity and resonance Rayleigh scattering intensity of rho-damine B dramatically decreased (with those of safranine T in-creased) . The stability constants of guest molecule in the aqueous solution of β-CD were studied by the fluorescence spectroscopy and resonance Rayleigh scattering spectroscopy at 15, 25 and 35 ℃ , respectively.The influence of temperature on the inclusion action was investigated and the apparent thermodynamic parame-ters were also obtained. The test results demonstrated that the form of inclusion complex was dependent on both molecular struc-tures of β-CD and guest molecules and the strength between them, and the inclusion complex was formed easily when the sizes of the guest molecule or its groups were similar with that of β-CD core. The stability of inclusion complex was influenced by the strength between β-CD and the guest molecule. Hydrophobic bond is the main driving force for the inclusion system of dye with β-CD.