CdS-Based Catalysts Derived from TMeQ[6]/[Cd_xCl_y]ⁿ⁻-Based Frameworks for Oxidation Benzylamine

Abstract

The anion-induced outer surface interaction of Q[n]s is an important driving force in the construction of Q[n]-based supramolecular frameworks. In this work, a symmetric tetramethylsubstituted cucurbit[6]uril (TMeQ[6]) is selected as the basic structural block. Using the anion-induced outer surface interaction of Q[n]s derived from [Cd x Cl y ] n− anions formed by Cd 2+ cations in a HCl medium, four different TMeQ[6]-[Cd x Cl y ] n− -based supramolecular frameworks are constructed. Three of the most common TMeQ[6]-[Cd x Cl y ] n− -based supramolecular frameworks are selected for further vulcanization, and three different CdS/ TMeQ[6]-based framework catalysts with different structures and properties are obtained. The catalytic activities of these three CdS/ TMeQ[6]-based framework catalysts are investigated by the coupling photocatalytic reaction of aminobenzyl, and the results showed that the catalytic activities of the three catalysts are all higher than that of pure CdS. Therefore, this work establishes that it is possible to establish a method for synthesizing the Q[n]based framework-supported catalysts by first synthesizing TMeQ[6]-[Cd x Cl y ] n− -based supramolecular frameworks and then forming Q[n]-based framework supported catalysts by sulfurization or reduction.

A fluorescent probe for detection of Hg2+ ions constructed by tetramethyl cucurbit[6]uril and 1,2-bis(4-pyridyl)ethene

“…Using single-crystal X-ray diffraction has been previously described in the literature [ 43 ]. The main crystal structure parameters are recorded in Table 2 .…”

Metal Cation-Doped ns-Cucurbit[10]uril: Adsorption of Para-Phenylenediamine

“…The emergence and rapid development of cucurbit­[ n ]­urils as the fourth class of host macrocycles have been witnessed in the past few decades. − Their distinctive pumpkin-shaped structures and diverse host–guest properties have garnered extensive applications. − Additionally, there have been reports on the utilization of permanently porous cucurbit­[ n ]­uril crystals as adsorbent materials. − Huang’s group recently reported cucurbit[6]­uril as an ideal material for the separation of pyridine and toluene . However, the existing macrocyclic compounds are mainly dominated by a single cavity, and their application capabilities may be limited by the size and number of cavities.…”

Supramolecular Self‐Assembled Structure of Symmetrical Dicyclopentyl Substituted Cucurbit[6]uril with Calcium and Erbium Ions

“…[ 22–25 ] However, the solubility of ordinary cucurbit[n]uril is poor (only soluble in a few strong acids such as formic acid and hydrochloric acid), and the structure is stable and difficult to modify, which limits its research progress. By changing its constituent units—glycoluril, methyl cucurbit[n]uril, [ 26–33 ] cyclohexyl cucurbit[n]uril, [ 34,35 ] hydroxy cucurbit[n]uril, [ 36 ] and other modified cucurbit[n]uril appeared one after another, with the properties and solubility improved and enhanced.…”