Organic–Inorganic Cooperative Molecular Recognition in Nanostructure of Alkyl-grafted MCM-41

Abstract

Molecules having hydrophobic and hydrophilic groups such as 4-n-heptylaniline and 4-nonylphenol, an endocrine disrupter, fit the organic–inorganic nanostructure in alkyl-grafted MCM-41, interacting with the inorganic walls as well as the organic moiety, and thus the adsorbent achieves high molecular adsorption selectivity.

Die supramolekulare Chemie organisch‐anorganischer Hybrid‐Nanomaterialien

“…Entscheidend für die Optimierung der Eigenschaften ist dabei die Feinabstimmung der Polarität der inneren Struktur. Inumaru et al erzielten interessante Ergebnisse hinsichtlich des Adsorptionsverhaltens von Alkylphenolen und Alkylanilinen in MCM‐41‐Festkörpern 107. Sie präparierten eine Reihe verschiedener Festkörper, modifizierten deren Oberfläche mit Alkylketten unterschiedlicher Länge und dotierten das Wirtmaterial zusätzlich mit unterschiedlichen Konzentrationen an Al 3+ .…”

Water‐Tolerant, Highly Active Solid Acid Catalysts Composed of the Keggin‐Type Polyoxometalate H3PW12O40 Immobilized in Hydrophobic Nanospaces of Organomodified Mesoporous Silica

“…[4] The grafting of organic groups onto the pore walls of the silica [5] has provided novel materials for catalysis, [6] heavy-metal ion adsorption, [7] photocontrollable molecular storage, [8] gas separation, [9] and molecular recognition. [10][11][12] Since the chemical functionalities of these materials have been ascribed mainly to the organic moiety, a promising strategy toward new functions is to design an inorganic-organic cooperative mechanism in nanostructured materials. [11,12] Solid acid catalysts have served as important functional materials in about 180 industrial processes in the petroleum refinery industry and in the production of chemicals.…”

“…[10][11][12] Since the chemical functionalities of these materials have been ascribed mainly to the organic moiety, a promising strategy toward new functions is to design an inorganic-organic cooperative mechanism in nanostructured materials. [11,12] Solid acid catalysts have served as important functional materials in about 180 industrial processes in the petroleum refinery industry and in the production of chemicals. [13] In contrast, a significant number of acid-catalyzed reactions, such as Friedel-Crafts reactions, esterification, and hydrations, are still carried out by using conventional acids, such as H 2 SO 4 and AlCl 3 .…”

The Supramolecular Chemistry of Organic–Inorganic Hybrid Materials

“…The fine‐tuning of the inner polarity of such structures is a key step toward improved responses. In this respect, Inumaru et al reported interesting results on the adsorption behavior of alkyl phenols and alkyl anilines by MCM‐41 solids 107. They prepared a series of solids and grafted not only alkyl chains of different length onto the surface, but also doped the host material with different concentrations of Al 3+ ions.…”