Synthesis, spectroscopic and electrochemical studies of perylene containing conjugated copolymers

Bayseç, Şebnem
The synthesis , spectroscopic and electrochemical properties of a series of donor-acceptor (DA) type polymers by changing the donor unit (thiophene, dithienopyrrole) polymer backbone were investigated.The synthesized CoP1 and CoP2 were designed to investigate the effect of copolymerization and insertion of perylene tetracarboxylic dimide (PDI) on the structure of benzotriazole (BTz) based polymers. For CoP1 1,7-dibromo-perylene diimide,4,7-dibromo-2-dodecyl-2H-benzo[d][1,2,3]triazole and 2,5 bis(tributylstannyl)thiophene coupled with Stille Coupling. For CoP2 1,7-dibromo-perylene diimide, 4,7-dibromo-2-dodecyl-2H-benzo[d][1,2,3]triazole 4-dodecyl-2,6-bis(tributylstannyl)-4H dithieno[3,2-b:2',3'-d]pyrrole coupled with Stille Coupling. The resultant donnor acceptor type random copolymer indicated that incorporation of PDI into the structure of BTz based polymers leaded to increase in the n-type properties. CoP1; BTz-Th donor-acceptor based conjugated polymers converted to only n-dopable material. CoP2 ; BTz-DTP donor-acceptor based conjugated polymers converted to ambipolar material.


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Ertan, Salih; Kaynak, Cevdet; Cihaner, Atilla; Department of Polymer Science and Technology (2017)
In this thesis, a series of monomers covalently bonded to polyhedral oligomeric silsesquioxane (POSS) pendant group was designed and synthesized. POSS group is a hybrid organic-inorganic nanostructure with 1 to 3 nm diameter. POSS which has a cage structure is mainly composed of silicon (Si) (at vertices) and oxygen (O) (in the middle of the edge). POSS nanostructure can be modified through the vertices with organic functional groups. POSS groups provide different properties, such as thermal robustness, mec...
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CETIN, Asli; ISTANBULLUOGLU, Cagla; HACIOGLU, Serife Ozdemir; CEVHER, ŞEVKİ CAN; Toppare, Levent Kamil; Çırpan, Ali (2017-11-15)
In this study, donor-acceptor random polymers containing benzotriazole acceptor and bistriphenylamine and benzodithiophene donors, P1 and P2, were successfully synthesized by Stille coupling polymerization. The effect of bistriphenylamine moiety and thiophene -conjugated linker on electrochemical, spectroelectrochemical, and optical behaviors of the polymers were investigated. Optoelectronic properties and photovoltaic performance of the polymers were examined under the illumination of AM 1.5G, 100 mWcm(-2)...
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Kutkan, Seda; Toppare, Levent Kamil; Department of Chemistry (2016)
Donor-acceptor-donor type conjugated polymers have drawn a tremendous attention in the synthetic modification of optical and electronic properties. Low redox potentials, low band gaps, broad absorption spectrum, processability and durability are some of the crucial parameters for conjugated polymers according to the application areas. Efficient combination of strong electron-accepting units with strong electron-donor species can produce polymers with low oxidation potentials and low band gaps. Besides, intr...
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Ataoğlu, Emre; Çırpan, Ali; Ünalan, Hüsnü Emrah; Department of Polymer Science and Technology (2016)
Donor-acceptor type conjugated polymers containing thiadiazolo quinoxaline and benzodithiophene derivatives were used as photoactive material for organic solar cell. The alkoxy- substituted benzo[1,2-b;4,5-b’]dithiophene (BDT) monomer, 2,6bis(trimethyltin)-4,8-di(2-ethylhexyloxyl)benzo[1,2-b;4,5-b’]dithiophene, was polymerized with 4,9-dibromo-[1,2,5]thiadiazolo[3,4-g]quinoxaline through a Pd(0)catalyzed Stille coupling reaction. In order to improve the interchain interactions between polymer chains, an alk...
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Karakurt, Oğuzhan; Çırpan, Ali; Günbaş, Emrullah Görkem; Department of Chemistry (2021-1-22)
In this thesis, six conjugated polymers were synthesized by coupling of 2,1,3- benzoxadiazole derivatives with donor groups via Stille polycondensation reactions. Moreover, the effect of molecular weight for P1 and P2, effect of position of alkyl chain for P5 and effect of π-bridge groups for P6 which are selenophene and thiophene on optical, electrochemical, and photovoltaic properties were investigated. Also, modifications on alkyl chains of P3 and P4 were performed to increase their functionalities via p...
Citation Formats
Ş. Bayseç, “Synthesis, spectroscopic and electrochemical studies of perylene containing conjugated copolymers,” M.S. - Master of Science, Middle East Technical University, 2013.