Selective and tuneable recognition of anions using C(3v)-symmetrical tripodal urea-amide receptor platforms.
نویسندگان
چکیده
The synthesis and binding investigations of first generation C(3v)-symmetrical hydrogen bonding urea-amide based tripodal receptors, 1-6, with various anions such as acetate, phosphate, sulfate and chloride in DMSO-d(6) are presented. Analysis of the (1)H NMR titrations of 1-6 showed on all occasions the selective formation of 1 : 1 stoichiometries.
منابع مشابه
Selective and tuneable recognition of anions using C3v-symmetrical tripodal urea-amide receptor platformsw
The design and synthesis of receptors for the selective recognition and sensing of anions, through the use of weak interactions such as hydrogen bonding, is an active area of research within supramolecular chemistry. Structures based on urea and thiourea recognition sites are of particular interest due to their strong, and tuneable hydrogen binding abilities, and their relatively easy syntheses...
متن کاملAnion complexation with cyanobenzoyl substituted first and second generation tripodal amide receptors: crystal structure and solution studies.
Anion complexation properties of two new tripodal amide receptors have been extensively studied here. Two tripodal receptors have been synthesized from the reaction of cyanobenzoyl acid chloride with two tri-amine building blocks such as (i) tris(2-aminoethyl)amine and (ii) tris(2-(4-aminophenoxy)ethyl)amine, which resulted in the first (L1) and second (L2) generation tripodal amides respective...
متن کاملArsenate recognition in aqueous media by a simple tripodal urea.
The environmentally important and toxic arsenate anion (HAsO4(2-)) is trapped in the cavity of a dimeric capsular assembly formed by a tripodal urea receptor. The selective binding of HAsO4(2-) over other anions is observed in a semi-aqueous solvent using a (1)H NMR titration study.
متن کاملSelective recognition of sulfate ions by tripodal cyclic peptides functionalised with (thio)urea binding sites.
A tripodal urea and tripodal thiourea with the same cyclic peptide core have been synthesised and their anion binding ability investigated. In CDCl(3), the tripodal urea self-associates whereas the thiourea does not. Neither compound shows self-association in the more polar 10% v/v DMSO-d(6)/CDCl(3). Both compounds bind strongly and selectively to sulfate ions in CDCl(3) and 10% v/v DMSO-d(6)/C...
متن کاملTripodal Receptors for Cation and Anion Sensors
This review discusses different types of artificial tripodal receptors for the selective recognition and sensing of cations and anions. Examples on the relationship between structure and selectivity towards cations and anions are described. Furthermore, their applications as potentiometric ion sensing are emphasised, along with their potential applications in optical sensors or optodes.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Chemical communications
دوره 47 44 شماره
صفحات -
تاریخ انتشار 2011