Single molecule spectroscopy as a probe for dye-polymer interactions.
Experimental (Single Molecule Spectroscopy) and theoretical (quantum-chemical calculations and Monte Carlo and molecular dynamics simulations) techniques are combined to investigate the behavior and dynamics of a polymer-dye molecule system. It is shown that the dye molecule of interest (1,1'-dioctadecyl-3,3,3',3'-tetramethylindo-dicarbocyanine) adopts two classes of conformations, namely planar and nonplanar ones, when embedded in a poly(styrene) matrix. From an in-depth analysis of the fluorescence lifetime trajectories, the planar conformers can be further classified according to the way their alkyl side chains interact with the surrounding poly(styrene) chains.
Vallée
Renaud A L
RA
Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200 F, B-3001 Leuven, Belgium. renaud.vallee@chem.kuleuven.be
Marsal
Philippe
P
Braeken
Els
E
Habuchi
Satoshi
S
De Schryver
Frans C
FC
Van der Auweraer
Mark
M
Beljonne
David
D
Hofkens
Johan
J