?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=http%3A%2F%2Fd-scholarship-dev.library.pitt.edu%2F19610%2F&rft.title=EXPLORATION+OF+THIOPHENE-BASED+DONOR-DONOR+AND+DONOR-ACCEPTOR+CONJUGATED+OLIGOMERS&rft.creator=Owens%2C+Steven+G.&rft.description=Conjugated+polymers+are+one+of+the+leading+technologies+in+electronic+materials+research.+In+this+work+we+investigate+thiophene-based+donor-donor+(D-D)+and+donor-acceptor+(D-A)+conjugated+oligomers+for+future+application+towards+polymer+solar+cells+(PSCs).%0D%0ABeginning+from+computational+studies%2C+our+group+targets+specific+monomers+that+show+promise+in+both+bandgap+and+solar+cell+efficiency.+For+this+research%2C+we+have+found+a+novel+alkyl-nitrothiophene+(2-bromo-5-cyano-3-hexyl-4-nitrothiophene%2C+NT)+monomer+as+well+as+a+unique+D-D+combination+of+propylenedioxythiophene+(ProDOT)+and+isothianapthene+(ITN).+In+both+of+these+cases%2C+we+found+that+we+can+tune+the+tetramer+bandgap+(in+both+D-D+and+D-A+systems)+simply+by+changing+the+order+of+monomers+(rather+than+changing+the+identity+of+the+monomers).+Horner-Wadsworth-Emmons+(HWE)+was+chosen+to+provide+the+ability+to+individually+couple+monomers%2C+allowing+us+to+synthesize+sequenced+oligomers.%0D%0AThe+synthesis+of+the+novel+alkyl-NT+monomer+was+successful+and+progress+towards+additional+monomers+necessary+for+HWE+coupling+was+made.+A+test+Stille+coupling+towards+the+synthesis+of+the+ProDOT-ITN+oligomer+was+also+attempted.&rft.date=2013-09-26&rft.type=University+of+Pittsburgh+ETD&rft.type=PeerReviewed&rft.format=application%2Fpdf&rft.language=en&rft.identifier=http%3A%2F%2Fd-scholarship-dev.library.pitt.edu%2F19610%2F1%2FSGO_MS_Thesis.pdf&rft.identifier=++Owens%2C+Steven+G.++(2013)+EXPLORATION+OF+THIOPHENE-BASED+DONOR-DONOR+AND+DONOR-ACCEPTOR+CONJUGATED+OLIGOMERS.++Master's+Thesis%2C+University+of+Pittsburgh.++++(Unpublished)++