Langmuir−Blodgett Films Formed by Continuously Varying Surface Pressure. Characterization by IR Spectroscopy and Epifluorescence Microscopy

Langmuir ◽  
2007 ◽  
Vol 23 (9) ◽  
pp. 4950-4958 ◽  
Author(s):  
Lin Wang ◽  
Antonio Cruz ◽  
Carol R. Flach ◽  
Jesús Pérez-Gil ◽  
Richard Mendelsohn
Keyword(s):  
Ir Spectroscopy ◽  
Surface Pressure ◽  
Epifluorescence Microscopy ◽  
Langmuir Blodgett ◽  
Langmuir Blodgett Films

Surface Pressure Induced Structural Effects in Photosynthetic Reaction Center Langmuir-Blodgett Films

Langmuir ◽  
1998 ◽  
Vol 14 (1) ◽  
pp. 193-198 ◽  
Author(s):  
Paolo Facci ◽  
Victor Erokhin ◽  
Sergio Paddeu ◽  
Claudio Nicolini
Keyword(s):  
Reaction Center ◽  
Surface Pressure ◽  
Photosynthetic Reaction Center ◽  
Structural Effects ◽  
Langmuir Blodgett ◽  
Langmuir Blodgett Films

Elastic anisotropies in 22-tricosenoic acid Langmuir-Blodgett films: surface pressure and dipping direction

1989 ◽  
Vol 1 (23) ◽  
pp. 3663-3669 ◽  
Author(s):  
D G Gleed ◽  
B Hillebrands ◽  
S Lee ◽  
G I Stegeman ◽  
J R Sambles ◽  
...  
Keyword(s):  
Surface Pressure ◽  
Langmuir Blodgett ◽  
Langmuir Blodgett Films

SPECTROSCOPIC CHARACTERIZATIONS OF NONAMPHIPHILIC 2,5-BIS (5-TERT-BUTYL-BENZOXAZOLYL)-THIOPHENE MOLECULES AT THE AIR–WATER INTERFACE AND IN LANGMUIR–BLODGETT FILMS

2008 ◽  
Vol 15 (06) ◽  
pp. 889-896 ◽  
Author(s):  
S. BISWAS ◽  
SYED ARSHAD HUSSAIN ◽  
D. BHATTACHARJEE
Keyword(s):  
Phase Transition ◽  
Surface Pressure ◽  
Spectroscopic Studies ◽  
Repulsive Interaction ◽  
Water Interface ◽  
Thiophene Derivative ◽  
Langmuir Blodgett ◽  
Tert Butyl ◽  
Air Water Interface ◽  
Langmuir Blodgett Films

This paper reports the π–A isotherm and spectroscopic characterizations of mixed Langmuir and Langmuir–Blodgett films of a nonamphiphilic thiophene derivative, namely, 2,5-Bis (5-tert-butyl-benzoxazolyl)-thiophene (BBOT) molecules, mixed with polymethyl methacrylate (PMMA) and stearic acid (SA). The π–A isotherms and molefraction vs. area per molecule studies indicate some repulsive interaction between sample (BBOT) and matrix (PMMA or SA) molecules. At higher surface pressure in the SA mixed BBOT Langmuir monolayer, a phase transition occurs, which has been revealed by π–A isotherm studies. UV-vis absorption and fluorescence spectroscopic studies confirm this phase transition and closer association of BBOT molecules. Spectroscopic studies of LB films lifted at higher surface pressure clearly confirm the presence of dimmers and higher-order n-meric sites.

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