Periodic Mesoporous Organosilicas (PMOs): Past, Present, and Future

Abstract

Periodic mesoporous organosilicas (PMOs) represent a new class of organic-inorganic hybrid materials suitable for a broad range of applications such as chromatography, catalysis, sensing and microelectronics. Unlike in organic functionalized mesoporous silica phases obtained via grafting or co-condensation procedures the organic groups in PMOs are direct parts of the 3D framework structure, thus giving raise to enormous possibilities to tune their chemical and physical properties in designated ways by varying the structure of the precursors. In this review the distinctive features of PMOs are discussed, the latest developments concerning compositions, structures, morphologies and potential applications are figured out and finally a brief outlook of future aspects is given.

An innovative series of layered nanostructured aminoalkylsilica hybrid material

“…These materials present characteristics of the individual components as well as new unexpected properties. [1][2][3][4][5][6] A satisfactory method to obtain these hybrid materials is the sol-gel synthesis, which allows dispersion of the components in nano or molecular scale, combining their physicochemical properties or producing new ones. Among this ensemble, the self-organized silica-based hybrid materials are very promising, because a great quantity of novel materials with attractive properties can be obtained.…”

“…The T 1 species were not observed, indicating the formation of a very crosslinked APCl-silsesquioxane moiety. For the Q region, assigned to silica, a comparable distribution of Q 3 Figure 5. 29 Si CP-MAS NMR spectra of hybrid samples.…”

Funktionsmaterialien: von harten zu weichen porösen Netzwerken

“…Dass dies der Fall ist, erkennt man oft daran, dass bei einer Calcinierung, also einer Entfernung der organischen Gruppen, die Porenstruktur solcher Netzwerke kollabiert. [53] Es wurde bereits eine Vielzahl von organischen Gruppen für die Synthese von PMOs verwendet, [54][55][56] und die daraus resultierenden Materialien wurden für verschiedene Anwendungen, z. B. in der Katalyse, eingesetzt.…”

Phosphonic Acid Functionalized Periodic Mesoporous Organosilicas and Their Potential Applications in Selective Enrichment of Phosphopeptides

“…[8][9][10][11][12][13][14][15][16][17] Unlike the mesoporous silicas functionalized with the organic groups obtained via grafting or co-condensation methods, the PMOs with organic groups covalently bonded and homogeneously distributed in the framework can give rise to great possibilities for tuning the chemical and physical properties of PMOs in designated ways by varying the structure and chemical compositions of the precursors. The majority of the organic groups in the framework of PMOs were based upon short aliphatic (methane, ethane, ethene) or rigid aromatic (phenylene, thiophene) groups.…”

“…The majority of the organic groups in the framework of PMOs were based upon short aliphatic (methane, ethane, ethene) or rigid aromatic (phenylene, thiophene) groups. 9,10,12,15 To expand the materials' composition and add doped functional components, the bifunctionalized PMOs (BPMOs) with much wider application potentials than PMOs were synthesized by introducing the organic groups both in the framework and in the pore of the PMOs via co-condensation of (R′O) 3 SiRSi(OR′) 3 and (R′O) 3 SiR. [18][19][20][21][22][23][24][25][26][27] Because of the presence of bridged organic groups in the framework, PMOs demonstrate higher stability in a wide pH range than conventional mesoporous silicas.…”