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Articles 1 - 6 of 6
Full-Text Articles in Physical Sciences and Mathematics
Electronic Interactions Within Composites Of Polyanilines Formed Under Acidic And Alkaline Conditions. Conductivity, Esr, Raman, Uv-Vis And Fluorescence Studies, L Dennany, P C. Innis, S T. Mcgovern, Gordon G. Wallace, Robert J. Forster
Electronic Interactions Within Composites Of Polyanilines Formed Under Acidic And Alkaline Conditions. Conductivity, Esr, Raman, Uv-Vis And Fluorescence Studies, L Dennany, P C. Innis, S T. Mcgovern, Gordon G. Wallace, Robert J. Forster
Faculty of Science - Papers (Archive)
The properties of two forms of polyaniline (PAni) synthesised under acidic and basic conditions have been investigated both individually and as combined complexes. The PAni polymerised within alkaline media was redox inactive and non-conducting while the PAni emeraldine salt (ES) was electroactive and conducting. Raman, electron spin resonance, UV-Vis and fluorescence spectroscopies were used to monitor the changes in electronic properties of these conducting polymer composites. Solution cast films of alkaline synthesised (A-PAni) with the PAni ES resulted in an increase in the high spin polaron population suggesting that it acts as a pseudodopant. The ability of the A-PAni to …
The Effect Of Preparation Conditions And Biopolymer Dispersants On The Properties Of Swnt Buckypapers, Jenny Boge, Luke J. Sweetman, Marc In Het Panhuis, Stephen F. Ralph
The Effect Of Preparation Conditions And Biopolymer Dispersants On The Properties Of Swnt Buckypapers, Jenny Boge, Luke J. Sweetman, Marc In Het Panhuis, Stephen F. Ralph
Faculty of Science - Papers (Archive)
The effect of varying preparation conditions on the properties of buckypapers made using single-walled carbon nanotubes (SWNTs) was systematically investigated. Changing the sonication time, final dispersion volume or membrane filter used to prepare SWNT-Triton X-100 buckypapers all generally had only a small influence on the density, thickness, contact angle and electrical conductivity of the resulting material. More significant changes were noted when the effects of variations in the above preparation conditions on the mechanical properties and surface morphology of SWNT-Triton X-100 buckypapers were investigated. However, the largest changes in properties were found when various biopolymers (bovine serum albumin, lysozyme, gellan …
Direct Imaging Of Lipid-Ion Network Formation Under Physiological Conditions By Frequency Modulation Atomic Force Microscopy, Michael J. Higgins, Suzi P. Jarvis, Takeshi Fukuma
Direct Imaging Of Lipid-Ion Network Formation Under Physiological Conditions By Frequency Modulation Atomic Force Microscopy, Michael J. Higgins, Suzi P. Jarvis, Takeshi Fukuma
Faculty of Science - Papers (Archive)
Various metal cations in physiological solutions interact with lipid headgroups in biological membranes, having an impact on their structure and stability, yet little is known about the molecular-scale dynamics of the lipid-ion interactions. Here we directly investigate the extensive lipid-ion interaction networks and their transient formation between headgroups in a dipalmitoylphosphatidylcholine bilayer under physiological conditions. The spatial distribution of ion occupancy is imaged in real space by frequency modulation atomic force microscopy with sub-Angstrom resolution.
Comment On ‘‘Zircon Thermometer Reveals Minimum Melting Conditions On Earliest Earth’’ Ii, Allen Phillip Nutman
Comment On ‘‘Zircon Thermometer Reveals Minimum Melting Conditions On Earliest Earth’’ Ii, Allen Phillip Nutman
Faculty of Science - Papers (Archive)
No abstract provided.
Structural Re-Assignment Of The Mono- And Bis-Addition Products From The Addition Reactions Of N-(Diphenylmethylene)Glycinate Esters To [60]Fullerene Under Bingel Conditions, Graham E Ball, Glenn Ashley Burley, Leila Chaker, William Hawkins, James Williams, Paul A. Keller, Stephen G. Pyne
Structural Re-Assignment Of The Mono- And Bis-Addition Products From The Addition Reactions Of N-(Diphenylmethylene)Glycinate Esters To [60]Fullerene Under Bingel Conditions, Graham E Ball, Glenn Ashley Burley, Leila Chaker, William Hawkins, James Williams, Paul A. Keller, Stephen G. Pyne
Faculty of Science - Papers (Archive)
The addition of N-(diphenylmethylene)glycinate esters (Ph2C=NCH2CO2R) to [60]fullerene under Bingel conditions gives [60]fullerenyldihydropyrroles and not methano[60]fullerenyl iminoesters [C60C(CO2R)(N=CPh2)] as previously reported. Unequivocal evidence for the structure of C60C(CO2Et)(N=CPh2) was provided by INADEQUATE NMR studies on 13C enriched material. New mechanistic details are proposed to account for the formation of [60]fullerenyldihydropyrroles and their reductive ring-opening reactions.
Catalytic Transesterification Of Beta-Ketoesters With Zeolite H-Fer Under Solvent Free Conditions, Sudhir R. Shengule, K Pasupathy, Subhash P. Chavan, Vikas Shinde, R Anand
Catalytic Transesterification Of Beta-Ketoesters With Zeolite H-Fer Under Solvent Free Conditions, Sudhir R. Shengule, K Pasupathy, Subhash P. Chavan, Vikas Shinde, R Anand
Faculty of Science - Papers (Archive)
Zeolite H-FER catalyzes the transesterification of ??-ketoesters with variety of alcohols under solvent-less condition in excellent yields. The catalyst can be reused without any loss of activity. ?? ARKAT.