部分硫酸柱[5]领域:合成和分子识别特性
Ayona Goswami1, Süleyman Selim Çınaroğlu2, Noor Singh1
1Department of Chemistry and Biochemistry, University of Maryland, College Park, College Park, Maryland, 20742, United States.
Chemistry (Weinheim an der Bergstrasse, Germany)
|November 30, 2024
概括
我们合成了具有不同硫酸盐组的硫酸盐柱[5]. 增加硫酸盐含量提高了水溶性和宿主-客体结合亲和力,用于超分子化学中的应用.
科学领域:
- 超分子化学 超分子化学
- 材料科学 材料科学 材料科学
背景情况:
- 支柱[5]场地是具有可调节性质的宏循环主机.
- 宏观循环的硫化可以提高水溶性,改变结合特性.
研究的目的:
- 合成和表征一系列硫化柱[5]主体 (P5Sn) 的不同程度的硫化.
- 研究硫酸盐替代剂对宿主溶解度,自我结合和宿主结合热力学的影响.
- 探索这些量身定制的宿主在超分子化学中的潜在应用.
主要方法:
- 硫酸柱[5]的合成和特征化.
- 溶解度测量和1H NMR稀释实验以评估自我关联.
- 用X射线晶体学来确定宿主-客的复杂结构.
- 异热定位热量计 (ITC) 用于量化结合热力学.
主要成果:
- 成功合成了五个硫酸柱[5]主体 (P5S2-P5S10),表现出高水溶性 (73-131毫米).
- 核磁共振研究表明自我关联最小,由显示Me6HDA客体和分子间相互作用的晶体结构证实.
- ITC发现,增加硫化增强了客人的结合亲和力 (更多的负自由能量).
- 结合亲和力也随着客分子上NMe群的数量增加而增加.
结论:
- 柱体[5]沙上的硫酸盐替代剂的数量可以精确调节,以控制水溶性和宿主-客体结合亲和力.
- 这些硫酸柱体[5]领域显示出在高分子聚合物,分离技术和锁定系统中应用的巨大潜力.
- 调节结合相互作用的能力为设计先进的功能材料提供了一个多功能平台.
相关概念视频
Preparation and Reactions of Sulfides
4.7K
Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.
4.7K
Chirality at Nitrogen, Phosphorus, and Sulfur
5.7K
Chirality is most prevalent in carbon-based tetrahedral compounds, but this important facet of molecular symmetry extends to sp3-hybridized nitrogen, phosphorus and sulfur centers, including trivalent molecules with lone pairs. Here, the lone pair behaves as a functional group in addition to the other three substituents to form an analogous tetrahedral center that can be chiral.
A consequence of chirality is the need for enantiomeric resolution. While this is theoretically possible for all...
A consequence of chirality is the need for enantiomeric resolution. While this is theoretically possible for all...
5.7K
Electrophilic Aromatic Substitution: Sulfonation of Benzene
5.8K
Sulfonation of benzene is a reaction wherein benzene is treated with fuming sulfuric acid at room temperature to produce benzenesulfonic acid. Fuming sulfuric acid is a mixture of sulfur trioxide and concentrated sulfuric acid.
5.8K
Five-Membered Heterocyclic Aromatic Compounds: Overview
3.8K
Heterocyclic aromatic compounds are cyclic compounds that are aromatic and have one or more heteroatoms—atoms other than carbon, in the ring. Depending upon the number of atoms present in the ring, they can be either five or six-membered. Examples of five-membered heterocyclic aromatic compounds include pyrrole, furan, thiophene, and imidazole. Pyrrole consists of one nitrogen atom having one lone pair of electrons. Furan and thiophene have one oxygen and one sulfur heteroatom,...
3.8K
Hybridization of Atomic Orbitals II
31.8K
sp3d and sp3d 2 Hybridization
31.8K
Structure and Nomenclature of Thiols and Sulfides
4.6K
Thiols and sulfides are sulfur analogs of alcohols and ethers, respectively, where the sulfur atom takes the place of the oxygen atom. Thus, thiols are generally represented as RSH, where R is an alkyl substituent and —SH is the functional group. On the other hand, in sulfides, the central sulfur atom is bonded to two hydrocarbon groups on either side. Depending upon the type of group, sulfides can be either symmetrical or asymmetrical. Both thiols and sulfides display a bent geometry,...
4.6K


