Nanodiamonds in sugar rings: an experimental and theoretical investigation of cyclodextrin–nanodiamond inclusion complexes
作者:Jens Voskuhl、Mark Waller、Sateesh Bandaru、Boryslav A. Tkachenko、Carlo Fregonese、Birgit Wibbeling、Peter R. Schreiner、Bart Jan Ravoo
DOI:10.1039/c2ob06915f
日期:——
We report on the noncovalent interactions of nanodiamond carboxylic acids derived from adamantane, diamantane, and triamantane with β- and γ-cyclodextrins. The water solubility of the nanodiamonds was increased by attaching an aromatic dicarboxylic acid via peptide coupling. Isothermal titration calorimetry experiments were performed to determine the thermodynamic parameters (Ka, ΔH, ΔG and ΔS) for
我们报道了衍生自纳米金刚石羧酸的非共价相互作用 金刚烷, 金刚烷, 和 金刚烷含β-和γ-环糊精。这水通过肽偶联连接芳族二羧酸可增加纳米金刚石的溶解度。进行了等温滴定热分析实验,以确定宿主-客体夹杂物的热力学参数(K a,ΔH,ΔG和ΔS)。配合物的化学计量始终为1:1。发现较大的纳米金刚石的K a,ΔG和ΔH的夹杂物增加。Δ小号通常是阳性的,特别是对于最大的纳米金刚石。β-环糊精结合所有纳米金刚石,γ-环糊精显然更喜欢体积最大的纳米金刚石。9-三金刚烷羧酸的相互作用显示出有史以来针对γ-环糊精的最强络合常数之一,K a = 5.0×10 5 M -1。为了对这些包合物的可能结构基础有所了解,我们在理论上的B97-D3 / def2-TZVPP水平上进行了密度泛函计算。