Optical gas sensing by semiconductor nanoparticles or organic dye molecules hosted in the pores of mesoporous siliceous MCM-41

Characterization of Sn- and Zn-loaded MCM-41 catalysts for nopol synthesis

“…3. These blue shifts result from the size-quantization effect and indicate SnO 2 particles in the nanometer regime [31]. The UV-Vis band around 280 nm in the spectrum of ZnMC174 may be assigned to ZnO encapsulated nanoparticles [32][33][34].…”

Kompostite auf Basis von Zeolithen oder geordnet mesoporösen Oxiden für Anwendungen in der Photonik und Sensorik

“…Das Quenching ist stark temperaturabhängig; bei 30°C sind die Effekte groß, bei 150°C jedoch war kein Quenching mehr zu beobachten. Die Änderungen der Absorption lassen sich mit der Adsorptionsisothermen für n-Butan in den Poren des Si-MCM-41 korrelieren [81]. Verwendet man anstatt CdSe als Gastspezies in den MCM-41-Kanälen einen organischen Farbstoff wie Rhodamin B oder Zinkphthalocyanin als Lichtabsorbant, so beobachtet man mit n-Butan einen identischen Effekt, der F(R)-Wert verringert sich in Anwesenheit von Kohlenwasserstoffen.…”

Versatile Bottom‐Up Approach to Nanostructured Functional Materials for Optoelectronic Applications

“…In recent years, among the great variety of porous hosts, both inorganic and organic [8][9][10], the synthesis of ordered mesoporous inorganic-based materials [11,12], especially MCM-41, by employing supramolecular assembly of surfactant to template the reaction of inorganic species has been the subject of considerable research, due to their large surface area (1000 m 2 /g) and storage capacity for applications in catalysis, gas, and vapours adsorption, drug delivery, molecular confinement, flow cytometry, and skincare products [13][14][15][16][17][18][19][20]. Such mesostructurally ordered porous materials have been produced in the form of micrometric powders [21], thin films [22], and bulk monoliths [23].…”