Influence of the Surface Pressure on the Organization of Mixed Langmuir−Blodgett Films of Octadecylamine and Butyrylcholinesterase. 1. Film Preparation at the Air−Water Interface

Langmuir ◽  
2000 ◽  
Vol 16 (15) ◽  
pp. 6223-6227 ◽  
Author(s):  
J. M. Chovelon ◽  
K. Wan ◽  
N. Jaffrezic-Renault
Keyword(s):  
Surface Pressure ◽  
Water Interface ◽  
Langmuir Blodgett ◽  
Air Water Interface ◽  
Langmuir Blodgett Films ◽  
Film Preparation

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.

Chlorophyll a–violaxanthin interactions in monolayers at air–water interface and in Langmuir–Blodgett films

2000 ◽  
Vol 19 (2) ◽  
pp. 117-125 ◽  
Author(s):  
Wieslaw I Gruszecki ◽  
Bogumil Zelent ◽  
Heidar-Ali Tajmir-Riahi ◽  
Gongming Wang ◽  
Toufik Taleb ◽  
...  
Keyword(s):  
Chlorophyll A ◽  
Water Interface ◽  
Langmuir Blodgett ◽  
Air Water Interface ◽  
Langmuir Blodgett Films

Effects of a central metal on the organization of 5,10,15,20-tetra-(p-chlorophenyl)–rare earth porphyrin hydroxyl compound at the air/water interface and in Langmuir–Blodgett films

2005 ◽  
Vol 284 (2) ◽  
pp. 582-592 ◽  
Author(s):  
Xiaoling Li ◽  
Weiqing Xu ◽  
Tamitake Itoh ◽  
Akifumi Ikehata ◽  
Bing Zhao ◽  
...  
Keyword(s):  
Rare Earth ◽  
Central Metal ◽  
Water Interface ◽  
Langmuir Blodgett ◽  
Air Water Interface ◽  
Langmuir Blodgett Films

Spectroscopic study of non-amphiphilic 2-(4-biphenylyl)-5-(4-tert-butylphenyl)-l,3,4-oxadiazole aggregates at air–water interface and in Langmuir–Blodgett films

2004 ◽  
Vol 393 (1-3) ◽  
pp. 1-6 ◽  
Author(s):  
Somobrata Acharya ◽  
D Bhattacharjee ◽  
Jyotirmoy Sarkar ◽  
G.B Talapatra
Keyword(s):  
Spectroscopic Study ◽  
Water Interface ◽  
Langmuir Blodgett ◽  
Air Water Interface ◽  
Langmuir Blodgett Films

Protoporphyrin IX Zinc(II) Organization at the Air/Water Interface and Its Langmuir−Blodgett Films

Langmuir ◽  
2003 ◽  
Vol 19 (3) ◽  
pp. 779-784 ◽  
Author(s):  
Chun Li ◽  
Toyoko Imae
Keyword(s):  
Protoporphyrin Ix ◽  
Water Interface ◽  
Langmuir Blodgett ◽  
Air Water Interface ◽  
Langmuir Blodgett Films

Comparative study of porphyrin derivatives in monolayers at the air–water interface and in Langmuir–Blodgett films

2011 ◽  
Vol 519 (22) ◽  
pp. 8066-8073 ◽  
Author(s):  
Amrita Ghosh ◽  
Prasenjit Mahato ◽  
Sipra Choudhury ◽  
Amitava Das
Keyword(s):  
Comparative Study ◽  
Water Interface ◽  
Langmuir Blodgett ◽  
Porphyrin Derivatives ◽  
Air Water Interface ◽  
Langmuir Blodgett Films

Langmuir-Blodgett films of One-dimensional Nanowires composed of Amphiphilic Tetrathiafulvalenes and Electron Acceptor

2008 ◽  
Vol 1144 ◽  
Author(s):  
Yoko Tatewaki ◽  
Junko Takizawa ◽  
Tatsuya Hatanaka ◽  
Mutsumi Kimura ◽  
Hirofusa Shirai
Keyword(s):  
Electron Acceptor ◽  
Room Temperature ◽  
The Other ◽  
Water Interface ◽  
One Dimensional ◽  
Langmuir Blodgett ◽  
Electrical Conductivities ◽  
Air Water Interface ◽  
Langmuir Blodgett Films ◽  
Mixed Layers

ABSTRACTWe found that novel amphiphilic tetrathiafulvalene (TTF; 1) organized into supramolecular assemblies by the addition of electron acceptor 2,3,5,6-tetrafluoro-7,7'f,8,8'f-tetracyano-p-quinodimethane (F4TCNQ) at the air-water interface. The assemblies on the air-water interface can be transferred onto the surface of mica and the morphologies of transferred films were investigated by AFM. The morphology of Langmuir-Blodgett films strongly depended on the ratio between 1 and F4TCNQ. Film of 1:1 mixture of 1 and F4TCNQ formed nanoscopic wires having an average dimension of 5.0 (height) × 70 (width) × 3000 (length) nm. On the other hand, the film of 2:1 mixture of 1 and F4TCNQ showed the mixed domains of wires and flat monolayers. Thus, the completely charge-transferred complex (1+)(F4TCNQ-) formed one-dimensional nanowires having a micrometer length. Room temperature electrical conductivities of cast film for 1:1 and 2:1 mixed layers of 1 and F4TCNQ were 2.4 × 10−4 and 8.0 × 10−5 S cm−1, respectively.

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