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X-Ray Diffraction Studies of Tubules Formed from a Diacetylenic Phosphocholine Lipid

Published online by Cambridge University Press:  25 February 2011

B. Thomas ,
C. R. Safinya ,
R.J. Plano ,
N. A. Clark ,
B.R. Ratna  and
R. Shashidar
B. Thomas
Affiliation:
Exxon Research And Engineering Co., Annandale, N.J. 08801 University of Colorado, Boulder, CO. 80309
C. R. Safinya
Affiliation:
Exxon Research And Engineering Co., Annandale, N.J. 08801
R.J. Plano
Affiliation:
Exxon Research And Engineering Co., Annandale, N.J. 08801
N. A. Clark
Affiliation:
University of Colorado, Boulder, CO. 80309
B.R. Ratna
Affiliation:
Naval Research Laboratory, Washington, D.C. 20375
R. Shashidar
Affiliation:
Naval Research Laboratory, Washington, D.C. 20375
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Abstract

The diacetylenic phosphocholine lipid 1,2-bis(10, 12-tricosadiyonol)-sn-glycerol- 3-phosphocholine forms, upon cooling below the chain melting temperature, hollow cylindrical structures known as ‘tubules’. These tubules are approximately one micron in diameter and may range from tens to hundreds of microns in length. We have carried out x-ray diffraction studies of tubules (1) in 75/25 ethanol/water by volume and (2) in a dessicated state. We present results which show marked differences in the nature of both the in-plane and inter-layer correlations associated with the wrapped multilayer structure of the tubules in the two states.

Information

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 248: Symposium O – Complex Fluids , 1991 , 83
Copyright
Copyright © Materials Research Society 1992

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References

1. Lando, J.B. and Sudiwala, R.V., Chem. Mater. 2, 594–599, (1990).Google Scholar
2. Smith, G. S., Sirota, E.B., Safinya, C.R., Piano, R.J. and Clark, N.A., J. Chem. Phys., 22, 4519–4529, (1990).Google Scholar