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Supramolecular Control on the Optical Properties of a Dye‐Polyelectrolyte Assembly
- Source :
- ChemPhysChem. 22:975-984
- Publication Year :
- 2021
- Publisher :
- Wiley, 2021.
-
Abstract
- Control of fluorescent molecular assemblies is an exciting area of research with large potential for various important applications, such as, fluorescence sensing/probing, cell imaging and monitoring drug-delivery. In the present contribution, we have demonstrated control on the extent of aggregation of a dye-polyelectrolyte assembly using a macrocyclic host molecule, sulfobutylether-β-cyclodextrin (SBE-β-CD). Initially, a cationic molecular rotor based organic dye, Auramine-O (AuO), undergoes aggregation in the presence of an anionic polyelectrolyte, polystyrene sulfonate (PSS), and displays a broad intense new emission band along with large variation in its absorption features and excited-state lifetime. A manipulation of the monomer-aggregate equilibrium of the dye-polyelectrolyte assembly has been achieved by introducing a cyclodextrin based supramolecular host, SBE-β-CD, which leads to relocation of AuO molecules from polyelectrolyte (PSS) to supramolecular host cavity, owing to the formation of a host-guest complex between AuO and SBE-β-CD. A reversible control on this manipulation of monomer-aggregate equilibrium is further achieved by introducing a competitive guest for the host cavity i. e., 1-Adamantanol. Thus, we have demonstrated an interesting control on the dye-polyelectrolyte aggregate assembly using a supramolecular host molecule which open up exciting possibilities to construct responsive materials using a repertoire of various host-specific guest molecules.
- Subjects :
- Materials science
Optical Phenomena
Macromolecular Substances
Supramolecular chemistry
Nanotechnology
02 engineering and technology
010402 general chemistry
01 natural sciences
Polystyrene sulfonate
chemistry.chemical_compound
Molecule
Physical and Theoretical Chemistry
Fluorescent Dyes
chemistry.chemical_classification
Molecular Structure
Cyclodextrin
beta-Cyclodextrins
Cationic polymerization
021001 nanoscience & nanotechnology
Polyelectrolytes
Fluorescence
Atomic and Molecular Physics, and Optics
Polyelectrolyte
0104 chemical sciences
chemistry
Benzophenoneidum
Polystyrenes
Absorption (chemistry)
0210 nano-technology
Subjects
Details
- ISSN :
- 14397641 and 14394235
- Volume :
- 22
- Database :
- OpenAIRE
- Journal :
- ChemPhysChem
- Accession number :
- edsair.doi.dedup.....f50ff85bfd560c4c4a3a858c8010128b