Results 241 to 250 of about 1,352,611 (298)

CHIRAL LIQUID CRYSTALLINE SIDE-CHAIN POLYMERS: EFFECTS OF SIDE-CHAIN LENGTH ON PHYSICAL PROPERTIES

Ferroelectrics, 1996
Abstract The synthesis of a series of side-chain liquid crystalline siloxane copolymers is reported, and comparative studies of physical properties of members with different side-chain length have been attempted. Measurements of ferroelectricity and relaxation times aimed at studying structure-property relationships for the longer side-chain members ...
Magnus Svensson, Bertil Helgee, Kent Skarp, Gunnar Andersson, David Hermann   +4 more
openaire   +1 more source

Alkylfurans:  Effects of Alkyl Side-Chain Length on Insecticidal Activity

Journal of Natural Products, 1998
The insecticidal activity of five alkylfurans against the generalist insect herbivore beet armyworm, Spodoptera exigua, was examined. Two naturally occurring compounds, the avocadofurans 2-(pentadecyl)furan (1) and 2-(heptadecyl)furan (2), previously isolated from specialized avocado idioblast oil cells, and three homologues, 2-(tetradecyl)furan (3), 2-
C R, Rodriguez-Saona, D F, Maynard, S, Phillips, J T, Trumble   +3 more
openaire   +2 more sources

Conformation of Cylindrical Brushes in Solution:  Effect of Side Chain Length

Macromolecules, 2006
The conformation of cylindrical brush polymers with a polymethacrylate main and polystyrene side chains (6 ≤ ≤ 33, with the number-average degree of polymerization of the side chains) were studied by combined light and small-angle neutron scattering experiments. The results reveal that the main chain stiffness expressed in terms of the Kuhn statistical
Zhang, Bin, Gröhn, Franziska, Pedersen, Jan Skov, Fischer, K., Schmidt, M.   +4 more
openaire   +3 more sources

Molecular Bottlebrushes with Bimodal Length Distribution of Side Chains

Macromolecules, 2015
The structural details of bottlebrush polymers, specifically the grafting density and molecular weight distribution of side chains, influence their physical properties; however, they are difficult to analyze using conventional techniques. Herein we report the synthesis, characterization, and molecular imaging of bottlebrush macromolecules with both ...
Joanna Burdyńska, William Daniel, Yuanchao Li, Brittany Robertson, Sergei S. Sheiko, Krzysztof Matyjaszewski   +5 more
openaire   +1 more source

Phosphatidylcholine liposomes containing cholesterol analogues with side chains of various lengths

Chemistry and Physics of Lipids, 1980
The effect of the length of the side chain of sterols on their interaction with phosphatidylcholine was studied by measuring the permeability properties of liposomes constituted with sterol analogues with side chains of various lengths. The sensitivities of liposomes constituted with these sterol analogues toward digitonin and polyene antibiotics were ...
T, Nakamura, M, Nishikawa, K, Inoue, S, Nojima, T, Akiyama, U, Sankawa   +5 more
openaire   +2 more sources

Molecular Orientation of Hairy-Rod Polyesters:  Effects of Side Chain Length

Macromolecules, 1998
Polarized laser Raman microscopy was employed in order to investigate the effects of side chain length on the orientability of uniaxially drawn films of a model hairy-rod polymer, as a function of draw ratio; an aromatic polyester containing terphenyl units in the main chain and aliphatic side chains (hexyl and dodecyl units) was used in the ...
Andrikopoulos, K., Vlassopoulos, D., Voyiatzis, G. A., Yiannopoulos, Y. D., Kamitsos, Efstratios I.   +4 more
openaire   +2 more sources

Influence of side-chain length on phospholipid ordering in two dimensions

Chemistry and Physics of Lipids, 1998
Abstract Phosphoethanolamines (PE) with a 2-branched hexadecanoyl chain (ethyl, butyl and tetradecyl) at the sn-1 position of the glycerol backbone and an unbranched hexadecyl residue at the sn-2 position have been synthesised. They form stable monolayers at the air/water interface.
Bringezu, F., Brezesinski, G., Möhwald, H.   +2 more
openaire   +3 more sources

Influence of side chain lengths in mechanophore‐containing polyisobutylene‐graft‐polystyrene

Journal of Polymer Science, 2023
AbstractPolymer architecture plays an important role in morphology and mechanochemical response. Here, graft copolymers containing mechanophores at the backbone‐arm junction are synthesized through a combination of post‐polymerization modification of butyl rubber and controlled radical polymerization.
Kyle D. Mehringer, Parth K. Vagholkar, Brad J. Davis, Lisa K. Kemp, Guorong Ma, Robson F. Storey, Xiaodan Gu, Travis L. Thornell, Dane N. Wedgeworth, Yoan C. Simon, Sarah E. Morgan   +10 more
openaire   +2 more sources

Role of Oligoethylene Glycol Side Chain Length in Responsive Polymeric Nanoassemblies

Langmuir, 2019
An oft-desired feature of a responsive nanomaterial is that it should undergo disassembly or morphological change upon application of a specific stimulus. The extent of response has been found to depend on factors such as the nature and the number of responsive functionalities incorporated into these particles. In this work, the length of oligoethylene
Kishore Raghupathi, Vikash Kumar, Uma Sridhar, Alexander E. Ribbe, Huan He, S. Thayumanavan   +5 more
openaire   +2 more sources