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Norman Ratcliffe

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Norman Ratcliffe

Professor in Materials & Sensors Science


Polyheterocycles containing alkene spacer linkages Part I. Synthesis and electropolymerization of 3-styrylthiophenes (1994)
Journal Article
Ratcliffe, N. M., Campbell, S. A., Smith, J. R., Smith, J., Campbell, S., Dunleavy, M., & Ratcliffe, N. M. (1994). Polyheterocycles containing alkene spacer linkages Part I. Synthesis and electropolymerization of 3-styrylthiophenes. Synthetic Metals, 63(3), 233-243. https://doi.org/10.1016/0379-6779%2894%2990234-8

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.

Preparation of conductive films (1992)
Patent
Ratcliffe, N. M. (1992). Preparation of conductive films. US5089294 A

An electrically-conductive polypyrrole film is formed, on a non-conducting substrate, by contacting the substrate with pyrrole and an oxidising agent in a solvent, or with the colloidal polypyrrole that is the reaction product thereof, and removing t... Read More about Preparation of conductive films.

Preparation of conductive films and their use as gas sensors (1991)
Patent
Ratcliffe, N. M. (1991). Preparation of conductive films and their use as gas sensors. EP0411793 A2

An electrically-conductive polypyrrole film is formed, on a non-conducting substrate, by contacting the substrate with pyrrole and an oxidising agent in a solvent, or with the colloidal polypyrrole that is the reaction product thereof, and removing t... Read More about Preparation of conductive films and their use as gas sensors.

The simple preparation of a conducting and transparent polypyrrole film (1990)
Journal Article
Ratcliffe, N. M., & Ratcliffe, N. M. (1990). The simple preparation of a conducting and transparent polypyrrole film. Synthetic Metals, 38(1), 87-92. https://doi.org/10.1016/0379-6779%2890%2990070-2

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
Ratcliffe, N. M. (1990). Polypyrrole-based sensor for hydrazine and ammonia. Analytica Chimica Acta, 239(C), 257-262. https://doi.org/10.1016/S0003-2670%2800%2983859-3

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
Barton, J. W., Barton, J., Buhaenko, M., Moyle, B., & Ratcliffe, N. M. (1988). A promising material for non-linear optics: Observation of second harmonic generation from 4-[N-(4-carboxypentyl)-N-methylamino]-4′-nitrostilbene- coated substrates. Journal of the Chemical Society, Chemical Communications, 488-489. https://doi.org/10.1039/C39880000488

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
Barton, J. W., Ratcliffe, N. M., Roberts, G. G., Petty, M. C., Jones, C. A., Jones, C., …Barton, J. (1987). IR studies of pyroelectric Langmuir-Blodgett films. Thin Solid Films, 155(2), 187-195. https://doi.org/10.1016/0040-6090%2887%2990064-2

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
Daniel, M. F., Roser, S. J., Ratcliffe, N., Smith, G. W., Smith, G., Ratcliffe, N. M., …Daniel, M. (1987). Pyroelectric behaviour of Langmuir-Blodgett films containing polar chromophores. Thin Solid Films, 151(1), 9-15. https://doi.org/10.1016/0040-6090%2887%2990003-4

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.

Langmuir blodgett films (1987)
Patent
Smith, G., Daniel, M., Barton, J., & Ratcliffe, N. M. (1987). Langmuir blodgett films. WO/1987/000347

Novel Langmuir-Blodgett (LB) films of ABAB structure in which the compounds A and B are different and contain complementary groups which result in non-centrosymmetry of the layer plane. Three types of structure are described (i) in which A and B have... Read More about Langmuir blodgett films.

Pyroelectric activity in non-centrosymmetric Langmuir-Blodgett multilayer films (1985)
Journal Article
Smith, G., Daniel, M., Barton, J., & Ratcliffe, N. M. (1985). Pyroelectric activity in non-centrosymmetric Langmuir-Blodgett multilayer films. Thin Solid Films, 132(1-4), 125-134. https://doi.org/10.1016/0040-6090%2885%2990464-X

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.

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