Synthesis ofω-Substituted Alkanethiols and (Bromomethyl)methylthiomalonates
摘要:
Several multifunctional derivatives of methylthiomalonic acid (= 2-(thiocarboxy)acetic acid), i.e. 20a,b, 21, 22a,b, and 24, were prepared from thiols bearing a functionalized head group, i.e. from 9a,b, 12, and 16d,f (Schemes 4 and 5). The association constants of the two dithio podands 8b and 11 with K+ were determined.
Design, Synthesis, and Miniemulsion Polymerization of New Phosphonate Surfmers and Application Studies of the Resulting Nanoparticles as Model Systems for Biomimetic Mineralization and Cellular Uptake
present the synthesis of a new family of surfmers and their use for decorating nanoparticles with phosphonate groups through miniemulsion polymerization. Furthermore the synthesis of a dye‐labeled functional surfmer provided an elegant manner to evaluate and get deeper insights about its copolymerization. Additionally, potential applications of the synthesized particles in biological studies as well as
Biotinylated-spiperone ligands for quantum dot labeling of the dopamine D2 receptor in live cell cultures
作者:Ian D. Tomlinson、Oleg Kovtun、Tiffany M. Crescentini、Sandra J. Rosenthal
DOI:10.1016/j.bmcl.2019.02.024
日期:2019.4
D2 receptor (D2 DR) antagonist spiperone that can be conjugated to streptavidin-coated quantum dots via a pegylated biotin derivative. Using fluorescent imaging we demonstrate that substitution on the spiro position is tolerated, whilst the length and rigidity of a spacer arm attached to spiperone is important in controlling specific labeling as well as minimizing nonspecific labeling to cells and
Engineering Long-Range Order in Supramolecular Assemblies on Surfaces: The Paramount Role of Internal Double Bonds in Discrete Long-Chain Naphthalenediimides
作者:José Augusto Berrocal、G. Henrieke Heideman、Bas F. M. de Waal、Mihaela Enache、Remco W. A. Havenith、Meike Stöhr、E. W. Meijer、Ben L. Feringa
DOI:10.1021/jacs.0c00765
日期:2020.2.26
of an internal double bond in each aliphatic chain (unsaturated and saturated compounds, respectively). All molecules assemble into lamellar arrangements, with the NDI cores lying flat and forming 1D rows on the surface, while the carbon chains separate the 1D rows from each other. Importantly, the presence of the unsaturation plays a dominant role in the arrangement of the aliphatic chains, as it exclusively
用表面支持的超分子组装体实现长程有序是非共价表面功能化领域的紧迫挑战之一。获得无缺陷的表面分子组装将为各种纳米技术应用铺平道路。在这里,我们报告了用长脂肪链(C28 和 C33)对称功能化的两个萘二亚胺(NDI)库的合成及其在 1-苯基辛烷/高取向热解石墨(1-PO/HOPG)界面的自组装。两个 NDI 库的不同在于每个脂肪链中是否存在内部双键(分别为不饱和和饱和化合物)。所有分子组装成层状排列,NDI 核平放并在表面形成一维行,而碳链将一维行彼此分开。重要的是,不饱和度的存在在脂肪链的排列中起主导作用,因为它完全有利于交叉。相反,完全饱和的尾部自组装成交叉或非交叉对角排列的组合。这种堆积的差异在整个表面水平上被惊人地放大,并导致不饱和化合物几乎无缺陷的自组装单分子层。相比之下,饱和对应物的单层是全局无序的,即使它们局部保持层状排列。实验观察得到计算研究的支持,并且在不饱和化合物的情况下根据更强的范德华相互作用进行了合理化。