Characterization of Langmuir-monolayers of molecular clips by means of Brewster-angle-microscopy

2005 ◽  
Vol 284 (1) ◽  
pp. 44-50 ◽  
Author(s):  
P. Degen ◽  
H. Rehage ◽  
F. -G. Klärner ◽  
J. Polkowska
Keyword(s):  
Langmuir Monolayers ◽  
Brewster Angle ◽  
Brewster Angle Microscopy ◽  
Molecular Clips

Characterization of Langmuir-Monolayers of Molecular Tweezers and Clips by Means of Brewster-Angle-Microscopy

2004 ◽  
Vol 41 (3) ◽  
pp. 121-125
Author(s):  
H. Rehage ◽  
B. Achenbach ◽  
F.-G. Klärner ◽  
M. Kamieth ◽  
J. Panitzky
Keyword(s):  
Langmuir Monolayers ◽  
Brewster Angle ◽  
Brewster Angle Microscopy ◽  
Molecular Tweezers

Optical measurements of the phase diagrams of Langmuir monolayers of fatty acid, ester, and alcohol mixtures by Brewster-angle microscopy

1997 ◽  
Vol 106 (5) ◽  
pp. 1913-1920 ◽  
Author(s):  
Ellis Teer ◽  
Charles M. Knobler ◽  
Carsten Lautz ◽  
Stefan Wurlitzer ◽  
John Kildae ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Phase Diagrams ◽  
Fatty Acid Ester ◽  
Acid Ester ◽  
Langmuir Monolayers ◽  
Brewster Angle ◽  
Optical Measurements ◽  
Brewster Angle Microscopy ◽  
Alcohol Mixtures

Orientational Changes of Amphotericin B in Langmuir Monolayers Observed by Brewster Angle Microscopy

Langmuir ◽  
2001 ◽  
Vol 17 (5) ◽  
pp. 1477-1482 ◽  
Author(s):  
J. Miñones, ◽  
C. Carrera ◽  
P. Dynarowicz-Ła̧tka ◽  
J. Miñones ◽  
O. Conde ◽  
...  
Keyword(s):  
Amphotericin B ◽  
Langmuir Monolayers ◽  
Brewster Angle ◽  
Brewster Angle Microscopy

SYNTHESIS OF AMPHIPHILIE TEMPO DERIVATIVE AND CHARACTERIZATION OF LANGMUIR MONOLAYERS OF AMPHIPHILIC ALKYL-TEMPOs AT THE AIR/WATER INTERFACE

2006 ◽  
Vol 05 (06) ◽  
pp. 787-793
Author(s):  
YOUNG SOO KANG ◽  
MI HYANG JEONG ◽  
SOO JA SHIN ◽  
YOUNG HWAN KIM ◽  
CHANG WOO KIM
Keyword(s):  
Alkyl Chain ◽  
Langmuir Monolayers ◽  
Langmuir Monolayer ◽  
Water Interface ◽  
Brewster Angle Microscopy ◽  
Collapse Pressure ◽  
Air Water Interface ◽  
Pressure Area ◽  
Hydrophobic Tail

The amphiphilic TEMPO molecules consist of two dissimilar parts. One part is hydrophilic (head) and the rest part is hydrophobic (tail). The derivatives of 4-alkaneamino-2, 2, 6, 6-tetramethyl-1-piperidinyloxy radical ( C n-amino-TEMPO, n = 14, 16, 18, 20, 22) was synthesized with 4-amino-TEMPO and carboxylic acid. The C n-amino-TEMPOs equilibrated at the air/water interface form Langmuir monolayer by classical Langmuir monolayer techniques. The stable monolayers of C 14-22-amino-TEMPOs were characterized by pressure–area isotherms. The features of collapse pressure of C 14-22-amino-TEMPOs were confirmed on alkyl chain length. Limiting area points and take-off area points from surface pressure-MMA isotherms were subjected to the influence of subphase. The monolayer of C 22-amino-TEMPO which has longer alkyl chain was characterized by Brewster Angle Microscopy. So we can confirm phase transition by BAM images as monolayer is expanding at the room temperature.

scholarly journals Head-group Dependent Domain Morphologies in Langmuir Monolayers

1970 ◽  
Vol 46 (1) ◽  
pp. 47-52
Author(s):  
MM Hossain ◽  
T Kato
Keyword(s):  
Phase Transition ◽  
Langmuir Monolayers ◽  
Brewster Angle ◽  
Head Group ◽  
Critical Surface ◽  
Brewster Angle Microscopy ◽  
Head Groups ◽  
Air Water Interface ◽  
Surface Morphologies ◽  
Internal Texture

The effect of head groups on the thermodynamic properties and morphological features of the domains formed in the Langmuir monolayers at 10 oC has been investigated by a film balance and a Brewster angle microscopy (BAM). 2-hydroxyethyl myristate (2-HEM) and n-tetradecanoyl N-ethanolamide (NHEA-14), having the same chain length but different head groups have been taken as amphiphiles. Both the amphiphiles represent a first-order LE-LC phase transition at 10 oC at the air-water interface. The critical surface pressure necessary for this phase transition is 6.0 mN/m for 2-HEM and 1.0 mN/m for NHEA-14. The surface morphologies of the domains are entirely different. The domains of 2-HEM are circular having internal texture, while those of NHEA-14 are dendritic having directional characteristics. The presence of interfacial hydrogen bonding in the latter amphiphile should be responsible for the formation of such characteristic domains in the case of latter amphiphile. Key words: Langmuir monolayers; Phase transition; Brewster angle microscopy; 2-hydroxyethyl myristate; n-tetradecanoyl Nethanolamide. DOI: http://dx.doi.org/10.3329/bjsir.v46i1.8104 Bangladesh J. Sci. Ind. Res. 46(1), 47-52, 2011

Stepwise Collapse of Cyclolinear Polysiloxane Langmuir Monolayers Studied by Brewster Angle Microscopy and Grazing Incidence X-ray Diffraction

2004 ◽  
Vol 37 (13) ◽  
pp. 4872-4881 ◽  
Author(s):  
Yu. K. Godovsky ◽  
G. Brezesinski ◽  
J. Ruiz-Garcia ◽  
H. Möhwald ◽  
T. R. Jensen ◽  
...  
Keyword(s):  
Langmuir Monolayers ◽  
Grazing Incidence ◽  
Brewster Angle ◽  
Brewster Angle Microscopy ◽  
X Ray Diffraction ◽  
X Ray
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