Neutron reflectivity and structure of polyether dendrimers as langmuir films

P. M. Saville; P. A. Reynolds; J. W. White; C. J. Hawker; J. M.J. Fréchet; K. L. Wooley; J. Penfold; J. R.P. Webster

doi:10.1021/j100020a062

Neutron reflectivity and structure of polyether dendrimers as langmuir films

P. M. Saville, P. A. Reynolds, J. W. White^*, C. J. Hawker, J. M.J. Fréchet, K. L. Wooley, J. Penfold, J. R.P. Webster

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

117 Scopus citations

Abstract

Neutron reflectivity and Π-A isotherm measurements of Langmuir films of polyether dendrimers based on 3,5-dihydroxybenzyl alcohol have elucidated the structure of these interesting molecules at the air-water interface. The neutron reflectivity measurements indicated a collapse of the fourth-generation monodendron, [G-4]-OH, to a bilayer structure. The molecules in the layer next to the water interface were ellipsoidal in structure due to compression and contained a volume fraction of about 25% of the substrate water. The molecules in the layer next to air were spherical with a diameter of 21 Å and contained no water. Isotherm measurements of the monodendron and tridendron series indicated scaling relationships between the area per molecule and the molecular weights of these species.

Original language	English (US)
Pages (from-to)	8283-8289
Number of pages	7
Journal	Journal of Physical Chemistry
Volume	99
Issue number	20
DOIs	https://doi.org/10.1021/j100020a062
State	Published - 1995
Externally published	Yes

ASJC Scopus subject areas

General Engineering
Physical and Theoretical Chemistry

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@article{8467f4b06911430995bb1fb897b4646a,

title = "Neutron reflectivity and structure of polyether dendrimers as langmuir films",

abstract = "Neutron reflectivity and Π-A isotherm measurements of Langmuir films of polyether dendrimers based on 3,5-dihydroxybenzyl alcohol have elucidated the structure of these interesting molecules at the air-water interface. The neutron reflectivity measurements indicated a collapse of the fourth-generation monodendron, [G-4]-OH, to a bilayer structure. The molecules in the layer next to the water interface were ellipsoidal in structure due to compression and contained a volume fraction of about 25% of the substrate water. The molecules in the layer next to air were spherical with a diameter of 21 {\AA} and contained no water. Isotherm measurements of the monodendron and tridendron series indicated scaling relationships between the area per molecule and the molecular weights of these species.",

author = "Saville, {P. M.} and Reynolds, {P. A.} and White, {J. W.} and Hawker, {C. J.} and Fr{\'e}chet, {J. M.J.} and Wooley, {K. L.} and J. Penfold and Webster, {J. R.P.}",

year = "1995",

doi = "10.1021/j100020a062",

language = "English (US)",

volume = "99",

pages = "8283--8289",

journal = "Journal of Physical Chemistry",

issn = "0022-3654",

publisher = "American Chemical Society",

number = "20",

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TY - JOUR

T1 - Neutron reflectivity and structure of polyether dendrimers as langmuir films

AU - Saville, P. M.

AU - Reynolds, P. A.

AU - White, J. W.

AU - Hawker, C. J.

AU - Fréchet, J. M.J.

AU - Wooley, K. L.

AU - Penfold, J.

AU - Webster, J. R.P.

PY - 1995

Y1 - 1995

N2 - Neutron reflectivity and Π-A isotherm measurements of Langmuir films of polyether dendrimers based on 3,5-dihydroxybenzyl alcohol have elucidated the structure of these interesting molecules at the air-water interface. The neutron reflectivity measurements indicated a collapse of the fourth-generation monodendron, [G-4]-OH, to a bilayer structure. The molecules in the layer next to the water interface were ellipsoidal in structure due to compression and contained a volume fraction of about 25% of the substrate water. The molecules in the layer next to air were spherical with a diameter of 21 Å and contained no water. Isotherm measurements of the monodendron and tridendron series indicated scaling relationships between the area per molecule and the molecular weights of these species.

AB - Neutron reflectivity and Π-A isotherm measurements of Langmuir films of polyether dendrimers based on 3,5-dihydroxybenzyl alcohol have elucidated the structure of these interesting molecules at the air-water interface. The neutron reflectivity measurements indicated a collapse of the fourth-generation monodendron, [G-4]-OH, to a bilayer structure. The molecules in the layer next to the water interface were ellipsoidal in structure due to compression and contained a volume fraction of about 25% of the substrate water. The molecules in the layer next to air were spherical with a diameter of 21 Å and contained no water. Isotherm measurements of the monodendron and tridendron series indicated scaling relationships between the area per molecule and the molecular weights of these species.

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U2 - 10.1021/j100020a062

DO - 10.1021/j100020a062

M3 - Article

AN - SCOPUS:0001452791

SN - 0022-3654

VL - 99

SP - 8283

EP - 8289

JO - Journal of Physical Chemistry

JF - Journal of Physical Chemistry

IS - 20

ER -

Neutron reflectivity and structure of polyether dendrimers as langmuir films

Abstract

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