TY  - JOUR
A1  - Kopec, Maciej
A1  - Niemiec, Wiktor
A1  - Laschewsky, André
A1  - Nowakowska, Maria
A1  - Zapotoczny, Szczepan
T1  - Photoinduced energy and electron transfer in micellar multilayer films
JF  - The journal of physical chemistry : C, Nanomaterials and interfaces
N2  - Micellar multilayer films were prepared from an amphiphilic comb-like polycation ("polysoap") and the polyanion poly(styrene sulfonate) (PSS) using alternate polyelectrolyte layer-by-layer (LbL) self-assembly. Linear growth of the film thickness was evidenced by UV-vis spectroscopy and spectroscopic ellipsometry. Imaging by atomic force microscopy (AFM) indicated that the micellar conformation adopted by the polycation in solutions was preserved in the films. Thus, hydrophobic photoactive molecules, which were solubilized by the hydrophobic nanodomains of the micellar polymer prior to deposition, could be transferred into the films. Photoinduced energy transfer was observed in the nanostructured multilayers between naphthalene (donor) and perylene (acceptor) molecules embedded inside the polymer micelles. The efficiency of the energy transfer process can be controlled to some extent by introducing spacer layers between the layers containing the donor or acceptor, revealing partial stratification of the micellar LbL films. Also, photoinduced electron transfer was evidenced between perylene (donor) and butyl viologen (acceptor) molecules embedded inside the multilayers by steady-state fluorescence spectroscopy. The obtained photoactive nanostructures are promising candidates for solar-to-chemical energy conversion systems.
Y1  - 2014
U6  - https://doi.org/10.1021/jp410808z
SN  - 1932-7447
VL  - 118
IS  - 4
SP  - 2215
EP  - 2221
PB  - American Chemical Society
CY  - Washington
ER  -