CAJ | 학술논문

用核磁共振方法研究了β-CD与三种菁染料3,3′-二（3-磺丙基）噻菁三乙胺盐(dyeA)、3,3′-二（3-磺丙基）-5-氯-噻菁三乙胺盐(dyeB)和3,3′-二（3-磺丙基）-5,5′-二苯基-9-乙基恶碳菁(dyeC)在溶液中的包合现象和包合物的动态结构,实验发现β-CD环糊精疏水腔中的H-3和H-5以及三种菁染料的芳环上质子的化学位移由于形成包合物而发生明显变化,而且峰的位置随包合程度的不同而不同. 实验中发现包合物的荧光强度随β-CD浓度增加而减弱,相应计算表明β-CD与三种菁染料形成了1∶1的包合物.本文研究了三种包合物中主体部分OH-3和OH-6的化学位移随温度变化的情况,获得了包合物中氢键强弱的信息,通过NMR化学位移滴定法计算得到了三种包合物在水溶液中的稳定常数,在上述工作的基础上，本文提出了三种包合物的结构模型，描述了客体进入主体腔中的动态过程.
용핵자공진방법연구료β-CD여삼충정염료3,3′-이（3-광병기）새정삼을알염(dyeA)、3,3′-이（3-광병기）-5-록-새정삼을알염(dyeB)화3,3′-이（3-광병기）-5,5′-이분기-9-을기악탄정(dyeC)재용액중적포합현상화포합물적동태결구,실험발현β-CD배호정소수강중적H-3화H-5이급삼충정염료적방배상질자적화학위이유우형성포합물이발생명현변화,이차봉적위치수포합정도적불동이불동. 실험중발현포합물적형광강도수β-CD농도증가이감약,상응계산표명β-CD여삼충정염료형성료1∶1적포합물.본문연구료삼충포합물중주체부분OH-3화OH-6적화학위이수온도변화적정황,획득료포합물중경건강약적신식,통과NMR화학위이적정법계산득도료삼충포합물재수용액중적은정상수,재상술공작적기출상，본문제출료삼충포합물적결구모형，묘술료객체진입주체강중적동태과정.
The results of 1H NMR investigation of β-Cyclodextrin inclusion complexes with three cyanine dyes in D\-2O and DMSO solution are reported in this paper, It was found that there is difference in chemical shift of some protons both of β-Cyclodextrin cavity and of cyanine dyes between after and before complexing,the position of which is dependent upon the inclusive degree. Fluorescence spectroscopy of cyanine dyes showed that the fluorescence intensity of these dyes is obviously quenched due to the forming of inclusions with β-Cyclodextrin, calculation results based on fluorescence spectroscopy indicated that β-Cyclodextrin formed 1∶1 inclusion with three cyanine dyes respectively. Information about hydrogen bond was induced from the study of temperature dependence of chemical shift of hydroxyl protons in β-Cyclodextrin cavity, OH-3 and OH-6. Their equilibrium constants of inclusion complexes were obtained from NMR chemical shift titration. The structure model of three inclusion complexes and dynamic process entering β-Cyclodextrin cavity has been described in this paper.