[Spectroscopic study on the structure and orientation of 1-hydroxyl-5-dodecyloxy-naphthalene LB films].
Ultraviolet-visible (UV-Vis), infrared transmission reflection absorption (RA) and ATR spectra were used to study the mono-and multi-layer Langmuir-Blodgett (LB) films of C12H25ONaph (1,5)OH at various temperatures to investigate dependencies of the aggregation and phase transitions on the number of monolayers. The UV-vis spectra of the LB films revealed that C12H25ONaph (1,5)OH forms aggregates in the LB film. From the temperature dependence of UV-vis absorption spectra, it is clear that the aggregate was gradually converted to monomer with the temperature increased. A comparison of the infrared transmission and ATR spectra reveals that the hydrocarbon chains were tilted considerably in the LB film.
Zhao
B
B
Key Laboratory for Supramolecular Structure and Spectroscopy, Jilin University, 130023 Changchun.
Li
X
X
Wu
Y
Y
Xu
W
W
Li
G
G
Li
B
B