Show simple item record

Files in this item

Thumbnail

Item metadata

dc.contributor.advisorPhilp, Douglas
dc.contributor.authorRobertson, Craig Collumbine
dc.coverage.spatial450en_US
dc.date.accessioned2012-04-27T14:06:53Z
dc.date.available2012-04-27T14:06:53Z
dc.date.issued2011-11-30
dc.identifieruk.bl.ethos.552617 
dc.identifier.urihttp://hdl.handle.net/10023/2573
dc.description.abstractOver the past twenty years molecules capable of templating their own synthesis, so called self–replicating molecules have gained prominence in the literature. We show herein that mixing the reagents for replicating molecules can produce a network of self–replicators which coexist and that the networks can be instructed by the addition of preformed template upon initiation of the reaction. Whilst self–replicating molecules offer the simplest form of replication, nature has evolved to utilise not minimal self–replication but reciprocal replication where one strand templates the formation of not an identical copy of itself but a reciprocal strand. Efforts thus far at producing a synthetic reciprocal replicating system are discussed and an alternative strategy to address the problems encountered is proposed and successfully implemented. The kinetic behaviour of a self–replicating reaction bears two distinctive time periods. Upon initiation, the reaction proceeds slowly as no template exists to catalyse the reaction. Upon production of the template, the reaction proceeds more rapidly via template direction. During this slow reaction period, the system is prone to mistakes as the reaction is slow and unselective. The creation of an [A•B] binary complex through non–covalent recognition of reagents allows for the reaction to proceed at an accelerated rate upon initiation however products of such a reaction are usually catalytically inert and do not promote further template directed reaction. A strategy to combine the desired behaviour of an [A•B] binary complex with the further template directed autocatalytic self–replicating reaction is described and implemented. Supramolecular polymers consist of repeating monomers which are held together by non–covalent interactions. The strong association of a self–replicating template dimer is comparable to that of supramolecular polymers reported thus far in the literature which are produced by cumbersome standard linear synthetic procedures. Herein the application of self–replication to the field of supramolecular polymer synthesis is discussed. As the autocatalytic reaction to produce the template monomers occurs under the same conditions as required to allow polymerisation to proceed, the polymer is able to spontaneously form in situ by self–replicating supramolecular polymerisation.en_US
dc.language.isoenen_US
dc.publisherUniversity of St Andrews
dc.subjectPhysical organic chemistryen_US
dc.subjectSupramolecular chemistryen_US
dc.subject.lccQD878.R7
dc.subject.lcshPhysical organic chemistryen_US
dc.subject.lcshSupramolecular chemistryen_US
dc.titleBuilding complex systems based on simple molecular architecturesen_US
dc.typeThesisen_US
dc.type.qualificationlevelDoctoralen_US
dc.type.qualificationnamePhD Doctor of Philosophyen_US
dc.publisher.institutionThe University of St Andrewsen_US


This item appears in the following Collection(s)

Show simple item record