Monomolecular films of compounds with potential dermophilic and prophylactic properties. Esters of dihydroxyacetone

1969 ◽  
Vol 47 (5) ◽  
pp. 853-856 ◽  
Author(s):  
Ronald P. Quintana ◽  
Lorrin R. Garson ◽  
Andrew Lasslo
Keyword(s):  
Stearic Acid ◽  
Repellent Activity ◽  
Insect Repellent ◽  
Monomolecular Film ◽  
Monomolecular Films ◽  
Mixed Films

The synthesis of 1,3-diundecanoyloxyacetone (1) and 1-undecanoyloxy-3-hydroxyacetone (2) is reported. The properties of 1, spread as a pure monomolecular film and in mixed films with stearic acid, were determined and evaluated. Compound 2 did not form films. The compounds were designed to exert, potentially, long-lasting insect-repellent activity subsequent to anchoring to the skin.

Mixed Monomolecular Films of Chlorophyll and Cytochromes

1976 ◽  
Vol 31 (1-2) ◽  
pp. 44-47 ◽  
Author(s):  
P Chin ◽  
S. S. Brody
Keyword(s):  
Water Interface ◽  
Light Reaction ◽  
Chl A ◽  
Monomolecular Films ◽  
Mixed Films ◽  
Cyt C ◽  
Mixed Film ◽  
Large Interaction

Abstract Mixed monomolecular films of cytochrome (Cyt) and chlorophyll (Chl) were spread at a nitrogen-water interface. A large interaction is observed between reduced Cyt f and Chl a in a mixed film. Oxidized Cyt f and Chl a in a mixed film show little evidence for interaction. Mixed monomolecular films of Chl a with either reduced or oxidized Cyt c appears to result in denaturation of the protein at the surface. A light reaction is observed only in mixed films of reduced Cyt f and Chl a.

scholarly journals The structure of surface films. Part XVII.—γ hydroxy-stearic acid and its lactone

1933 ◽  
Vol 140 (840) ◽  
pp. 223-226 ◽  
Keyword(s):  
Stearic Acid ◽  
Aqueous Solutions ◽  
Surface Pressure ◽  
Surface Films ◽  
Hydroxy Stearic Acid ◽  
Monomolecular Films ◽  
Made In

This paper describes observations, mostly made in 1924 and not hitherto published in detail,* on the surface pressure of γ hydroxy-stearic acid (I) and its lactone (II) spread as monomolecular films on aqueous solutions. CH3 3 CH3 3 (CH 2 ) 13 (CH 2 ) 13 CHOH CH CH 2 CH 2 CH 2 O COOH CH 2 – CO I II Most of the measurements were made with the modification of Langmuir’s apparatus described in Parts I and II of this series of papers,† in which jets of air prevent the film passing the ends of the float. A few confirmatory observations have been made since, with the apparatus of Adam and Jessop, in which thin metallic ribbons block these gaps. The acid and lactone were kindly given me by Dr. P. W. Clutterbuck, of Manchester University.

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