All Outputs (72)

Novel composite organic-inorganic semiconductor sensors for the quantitative detection of target organic vapours (1996)
Journal Article

Composites of tin dioxide (an n-type semiconductor) and derivatives of the conducting polymer polypyrrole (a p-type semiconductor) gave reversible changes in electrical resistance at room temperature when exposed to a range of organic vapours. The op... Read More about Novel composite organic-inorganic semiconductor sensors for the quantitative detection of target organic vapours.

Application of density functional theory in the synthesis of electroactive polymers (1995)
Journal Article

A wide range of conjugated organic compounds undergo anodic electropolymerisation to produce polymers of high conductivity. However, electrooxidation does not always result in the formation of electroactive materials, since some reactions produce ins... Read More about Application of density functional theory in the synthesis of electroactive polymers.

Polyheterocycles containing alkene spacer linkages Part II. Synthesis and polymerization of (E)-2-styrylthiophenes and (E)-2-styrylpyrrole (1995)
Journal Article

A number of (E)-2-styrylthiophenes, exhibiting a range of electronic effects, and (E)-2-styrylpyrrole were synthesized and their electrochemical behaviour investigated. The films, produced by anodic electropolymerization, were redox inactive and exhi... Read More about Polyheterocycles containing alkene spacer linkages Part II. Synthesis and polymerization of (E)-2-styrylthiophenes and (E)-2-styrylpyrrole.

Polyheterocycles containing alkene spacer linkages Part II. Synthesis and polymerization of (E)-2-styrylthiophenes and (E)-2-styrylpyrrole (1995)
Journal Article

A number of (E)-2-styrylthiophenes, exhibiting a range of electronic effects, and (E)-2-styrylpyrrole were synthesized and their electrochemical behaviour investigated. The films, produced by anodic electropolymerization, were redox inactive and exhi... Read More about Polyheterocycles containing alkene spacer linkages Part II. Synthesis and polymerization of (E)-2-styrylthiophenes and (E)-2-styrylpyrrole.

Application of density functional theory in the synthesis of electroactive polymers (1995)
Journal Article

A wide range of conjugated organic compounds undergo anodic electropolymerisation to produce polymers of high conductivity. However, electrooxidation does not always result in the formation of electroactive materials, since some reactions produce ins... Read More about Application of density functional theory in the synthesis of electroactive polymers.

Polyheterocycles containing alkene spacer linkages Part I. Synthesis and electropolymerization of 3-styrylthiophenes (1994)
Journal Article

The synthesis and electrochemical behaviour of novel thiophene compounds containing a substituted phenyl group separated by an alkene spacer are described. In such systems, it was proposed that the molecular geometry should allow the π-electron densi... Read More about Polyheterocycles containing alkene spacer linkages Part I. Synthesis and electropolymerization of 3-styrylthiophenes.

The simple preparation of a conducting and transparent polypyrrole film (1990)
Journal Article

The preparation of transparent, c. 50 nm thick, conducting (c. 5.0 S cm-1) films of polypyrrole onto non-conducting substrates, e.g. acrylic, polyester, glass is described. The coating was produced by a dip process into a colloidal dispersion of poly... Read More about The simple preparation of a conducting and transparent polypyrrole film.

Polypyrrole-based sensor for hydrazine and ammonia (1990)
Journal Article

An ultra-thin layer of polypyrrole can be coated on non-conducting substrates, e.g., acrylic, by dip coating into a colloidal suspension of polypyrrole. This thin coating reversibly combines with low concentrations of ammonia or hydrazine with a conc... Read More about Polypyrrole-based sensor for hydrazine and ammonia.

A promising material for non-linear optics: Observation of second harmonic generation from 4-[N-(4-carboxypentyl)-N-methylamino]-4′-nitrostilbene- coated substrates (1988)
Journal Article

Glass coated with a nitro amino stilbene carboxylic acid using the Langmuir-Blodgett technique gave a non-centrosymmetric material exhibiting second harmonic generation, 1.06 to 0.53 μm.

IR studies of pyroelectric Langmuir-Blodgett films (1987)
Journal Article

Alternate-layer Langmuir-Blodgett (LB) assemblies, consisting of 22-tricosenoic acid with three different amine derivatives, have been fabricated. The pyroelectric activity in the films has been assessed and correlated with their structures determine... Read More about IR studies of pyroelectric Langmuir-Blodgett films.

Pyroelectric behaviour of Langmuir-Blodgett films containing polar chromophores (1987)
Journal Article

The pyroelectric behaviour of Langmuir-Blodgett films containing several different polar chromophores was studied. Two distinct levels of activity are seen. By comparison with films containing no chromophores it is shown that the lower level of activ... Read More about Pyroelectric behaviour of Langmuir-Blodgett films containing polar chromophores.

Pyroelectric activity in non-centrosymmetric Langmuir-Blodgett multilayer films (1985)
Journal Article

We report the detection of pyroelectric activity in non-centrosymmetric Langmuir-Blodgett multilayer films of structure ABAB ... where A and B are monolayers of different materials. Films consisting of alternating fatty amine and fatty acid layers gi... Read More about Pyroelectric activity in non-centrosymmetric Langmuir-Blodgett multilayer films.