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Bassindale AR, Liu Z, Taylor PG, Horton PN, Hursthouse MB. A simple route to novel D spherosilicones; the first crystallographic structures of D6 and D8 cages. Chem Commun (Camb) 2008:5625-7. [DOI: 10.1039/b808456d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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52
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Bassindale AR, Codina-Barrios A, Frascione N, Taylor PG. An improved phage display methodology for inorganic nanoparticle fabrication. Chem Commun (Camb) 2007:2956-8. [PMID: 17622443 DOI: 10.1039/b702650a] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The use of rolling circle amplification together with the addition of a wild-type control significantly improves the usefulness of phage display methodology as exemplified by the production of silver and platinum nanoparticles.
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Bassindale AR, Chen H, Liu Z, MacKinnon IA, Parker DJ, Taylor PG, Yang Y, Light ME, Horton PN, Hursthouse MB. A higher yielding route to octasilsesquioxane cages using tetrabutylammonium fluoride, Part 2: further synthetic advances, mechanistic investigations and X-ray crystal structure studies into the factors that determine cage geometry in the solid state. J Organomet Chem 2004. [DOI: 10.1016/j.jorganchem.2004.06.063] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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56
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Bassindale AR, Parker DJ, Pourny M, Taylor PG, Horton PN, Hursthouse MB. Fluoride Ion Entrapment in Octasilsesquioxane Cages as Models for Ion Entrapment in Zeolites. Further Examples, X-ray Crystal Structure Studies, and Investigations into How and Why They May Be Formed. Organometallics 2004. [DOI: 10.1021/om049928g] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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57
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Bassindale AR, Liu Z, Parker DJ, Taylor PG, Horton PN, Hursthouse MB, Light ME. The reactions of dialkyl and diarylethoxysilanes with T6 silsesquioxane cages. J Organomet Chem 2003. [DOI: 10.1016/s0022-328x(03)00622-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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58
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Bassindale AR, Pourny M, Taylor PG, Hursthouse MB, Light ME. Fluoride-ion encapsulation within a silsesquioxane cage. Angew Chem Int Ed Engl 2003; 42:3488-90. [PMID: 12900960 DOI: 10.1002/anie.200351249] [Citation(s) in RCA: 138] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Abstract
Biosilicification occurs on a globally vast scale under mild conditions. Although research has progressed in the area of silica biosynthesis, the molecular mechanisms of these interactions are effectively unknown. The natural production of silica in the Tethya aurantia marine sponge, Cylindrotheca fusiformis diatom, and Equisetum telmateia plant appear to be similar. However, the studies were complicated mechanistic queries due to the use of silicic acid analogues. Given these complications, a carefully chosen model study was carried out to test the ability of enzymes to catalyse the formation of molecules with a single siloxane bond during the in vitro hydrolysis and condensation of alkoxysilanes. Our data suggest that homologous lipase and protease enzymes catalyse the formation of siloxane bonds under mild conditions. Non-specific interactions with trypsin promoted the in vitro hydrolysis of alkoxysilanes, while the active site was determined to selectively catalyse the condensation of silanols.
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Negrebetsky VV, Bylikin SY, Shipov AG, Baukov YI, Bassindale AR, Taylor PG. Stereochemical rearrangements of dibromides of hexacoordinated germanium containing amidomethyl and lactamomethyl chelate ligands. J Organomet Chem 2003. [DOI: 10.1016/s0022-328x(03)00395-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Bassindale AR, MacKinnon IA, Maesano MG, Taylor PG. The preparation of hexasilsesquioxane (T6) cages by "non aqueous" hydrolysis of trichlorosilanes. Chem Commun (Camb) 2003:1382-3. [PMID: 12841252 DOI: 10.1039/b302556j] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hexasilsesquioxane cages (T6) have been prepared from a range of alkyl and aryl trichlorosilanes using a "non aqueous" hydrolysis with dimethyl sulfoxide.
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Bassindale AR, Baukov YI, Borbaruah M, Glynn SJ, Negrebetsky VV, Parker DJ, Taylor PG, Turtle R. Modelling nucleophilic substitution at silicon using solution 19F-NMR chemical shift, 1JSiF and 2JCF coupling constant data of pentacoordinate silicon compounds. Correlation with other magnetic nuclei and X-ray structures. J Organomet Chem 2003. [DOI: 10.1016/s0022-328x(03)00009-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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64
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Bassindale AR, Liu Z, MacKinnon IA, Taylor PG, Yang Y, Light ME, Horton PN, Hursthouse MB. A higher yielding route for T8 silsesquioxane cages and X-ray crystal structures of some novel spherosilicates. Dalton Trans 2003. [DOI: 10.1039/b302950f] [Citation(s) in RCA: 111] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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65
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Bassindale AR, Baukov YI, Taylor PG, Negrebetsky VV. Proton catalysis of nucleophilic substitution at pentacoordinate silicon. J Organomet Chem 2002. [DOI: 10.1016/s0022-328x(02)01395-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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66
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Johnson CD, Rose S, Taylor PG. Kinetic acidity function Hc.thermod.. 2. The scale in perchloric acid. J Org Chem 2002. [DOI: 10.1021/jo01319a019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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67
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Greig CC, Johnson CD, Rose S, Taylor PG. Kinetic acidity function Hc.thermod.. 1. Definition of the function in aqueous sulfuric acid and its applicability to acid-catalyzed hydrogen exchange of the ring protons of aromatic molecules, and protonation of carbon-carbon double and triple bonds. J Org Chem 2002. [DOI: 10.1021/jo01319a018] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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68
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Harmer GP, Abbott D, Taylor PG, Parrondo JMR. Brownian ratchets and Parrondo's games. CHAOS (WOODBURY, N.Y.) 2001; 11:705-714. [PMID: 12779509 DOI: 10.1063/1.1395623] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Parrondo's games present an apparently paradoxical situation where individually losing games can be combined to win. In this article we analyze the case of two coin tossing games. Game B is played with two biased coins and has state-dependent rules based on the player's current capital. Game B can exhibit detailed balance or even negative drift (i.e., loss), depending on the chosen parameters. Game A is played with a single biased coin that produces a loss or negative drift in capital. However, a winning expectation is achieved by randomly mixing A and B. One possible interpretation pictures game A as a source of "noise" that is rectified by game B to produce overall positive drift-as in a Brownian ratchet. Game B has a state-dependent rule that favors a losing coin, but when this state dependence is broken up by the noise introduced by game A, a winning coin is favored. In this article we find the parameter space in which the paradoxical effect occurs and carry out a winning rate analysis. The significance of Parrondo's games is that they are physically motivated and were originally derived by considering a Brownian ratchet-the combination of the games can be therefore considered as a discrete-time Brownian ratchet. We postulate the use of games of this type as a toy model for a number of physical and biological processes and raise a number of open questions for future research. (c) 2001 American Institute of Physics.
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Bassindale AR, Katampe I, Taylor PG. Improved simple synthesis of cyclic sulfates from trimethylsilyl chlorosulfonate. CAN J CHEM 2000. [DOI: 10.1139/v00-050] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Reaction of iodosobenzene and trimethylsilyl chlorosulfonate followed by removal of the solvent and trimethylchlorosilane gives phenyliodosulfate. This can be used without further purification to prepare cyclic sulfates from alkenes, including vinylsilanes. Previous results have shown that if the trimethylchlorosilane is not removed, sultones are formed and a possible explanation of this behaviour is given.Key words: silicon, vinylsilanes, cyclic sulfate, phenyliodosulfate.
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Bassindale AR, Parker DJ, Patel P, Taylor PG. Chemoselective methylation of amides and heterocycles using chloromethyldimethylsilyl chloride. Tetrahedron Lett 2000. [DOI: 10.1016/s0040-4039(00)00731-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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71
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Bassindale AR, Parker DJ, Taylor PG, Auner N, Herrschaft B. The X-ray structure of a protonated hypervalent silanol. Chem Commun (Camb) 2000. [DOI: 10.1039/a909504g] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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73
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Bassindale AR, Kyle PA, Soobramanien MC, Taylor PG. The synthesis of 2-trialkylsilylaziridines from vinyltrialkylsilanes or the reaction of α-chloro-α-silyl carbanions with imines. ACTA ACUST UNITED AC 2000. [DOI: 10.1039/a905182a] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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74
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Bassindale AR, Kyle PA, Soobramanien MC, Taylor PG. Ring opening reactions of 2-trialkylsilylaziridines. ACTA ACUST UNITED AC 2000. [DOI: 10.1039/a906233e] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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75
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Bassindale AR, Parker DJ, Taylor PG. Modelling nucleophilic substitution at silicon in solution using hypervalent silicon compounds based on 2-thiopyridones. ACTA ACUST UNITED AC 2000. [DOI: 10.1039/a908424j] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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