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在主体-客体化学中,人们最近发现,羧甲基糖淀粉钠(NaCMA)在模拟酶催化反应中是一新型宿主,它能对很多化学反应产生显著的加速作用,这引起了人们广泛的注意和重视.羧甲基糖淀粉钠催化反应的基础是把受物分子包结在它的螺旋内穴里,本文研究了羧甲基取代度对NaCMA包结能力的影响. 1.羧甲基取代度对NaCMA包碘络合物光学性质的影响糖淀粉在水溶液中取螺旋构象,螺旋内穴里能够稳定地包结多碘负离子.研究NaCMA包碘络合物的光学性质可以探索它们在水溶液中形成螺旋构象与取代度的关系.不同取代度的NaCMA包碘络合物的吸光度A和最大吸收波长λ_(max)如表1.
In host-guest chemistry, it has recently been discovered that sodium carboxymethyl starch glycolate (NaCMA) is a novel host for mimetic enzyme catalysis and can produce a significant acceleration of many chemical reactions, drawing much attention And the importance of sodium carboxymethyl starch glycoal sodium catalytic reaction is based on the inclusion of molecules in its helix inside the hole, the study of the degree of carboxymethyl substitution NaCMA entrapment capacity of 1. Carboxymethyl substitution Optical Properties of NaCMA Iodine Complexes The glycosylated starch has a helical conformation in aqueous solution and the iodine anion can be stably entrapped in the inner helical cavity.The optical properties of NaCMA inclusion complexes can be explored in aqueous solution Forming the relationship between the helical conformation and the degree of substitution.The absorbance A and the maximum absorption wavelength λmax of NaCMA-containing iodine complexes with different degrees of substitution are shown in Table 1.