Bitte benutzen Sie diese Referenz, um auf diese Ressource zu verweisen:
doi:10.22028/D291-35110
Titel: | Embedding Photoacids into Polymer Opal Structures: Synergistic Effects on Optical and Stimuli-Responsive Features |
VerfasserIn: | Bitsch, Martin Boehm, Anna Katharina Grandjean, Alexander Jung, Gregor Gallei, Markus |
Sprache: | Englisch |
Titel: | Molecules |
Bandnummer: | 26 |
Heft: | 23 |
Verlag/Plattform: | MDPI |
Erscheinungsjahr: | 2021 |
Freie Schlagwörter: | opal film melt-shear organization photoacid excited-state proton transfer fluorescence polymer particle synthesis |
DDC-Sachgruppe: | 500 Naturwissenschaften |
Dokumenttyp: | Journalartikel / Zeitschriftenartikel |
Abstract: | Opal films with their vivid structural colors represent a field of tremendous interest and obtained materials offer the possibility for many applications, such as optical sensors or anti counterfeiting materials. A convenient method for the generation of opal structures relies on the tailored design of core-interlayer-shell (CIS) particles. Within the present study, elastomeric opal films were combined with stimuli-responsive photoacids to further influence the optical properties of structurally colored materials. Starting from cross-linked polystyrene (PS) core particles featuring a hydroxy-rich and polar soft shell, opal films were prepared by application of the melt-shear organization technique. The photoacid tris(2,2,2-trifluoroethyl) 8-hydroxypyrene-1,3,6-trisulfonate (TFEHTS) could be conveniently incorporated during freeze-drying the particle dispersion and prior to the melt-shear organization. Furthermore, the polar opal matrix featuring hydroxylic moieties enabled excited-state proton transfer (ESPT), which is proved by spectroscopic evaluation. Finally, the influence of the photoacid on the optical properties of the 3-dimensional colloidal crystals were investigated within different experimental conditions. The angle dependence of the emission spectra unambiguously shows the selective suppression of the photoacid’s fluorescence in its deprotonated state. |
DOI der Erstveröffentlichung: | 10.3390/molecules26237350 |
Link zu diesem Datensatz: | urn:nbn:de:bsz:291--ds-351101 hdl:20.500.11880/32144 http://dx.doi.org/10.22028/D291-35110 |
ISSN: | 1420-3049 |
Datum des Eintrags: | 6-Jan-2022 |
Fakultät: | NT - Naturwissenschaftlich- Technische Fakultät |
Fachrichtung: | NT - Chemie |
Professur: | NT - Prof. Dr. Markus Gallei NT - Prof. Dr. Gregor Jung |
Sammlung: | SciDok - Der Wissenschaftsserver der Universität des Saarlandes |
Dateien zu diesem Datensatz:
Datei | Beschreibung | Größe | Format | |
---|---|---|---|---|
molecules-26-07350.pdf | 3,38 MB | Adobe PDF | Öffnen/Anzeigen |
Diese Ressource wurde unter folgender Copyright-Bestimmung veröffentlicht: Lizenz von Creative Commons