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.


Synthesis and characterization of conjugated polymers with polyhedral oligomeric silsesquioxane pendant groups
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...
Synthesis of bistriphenylamine- and benzodithiophene-based random conjugated polymers for organic photovoltaic applications
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)...
Syntheses, electrochemical and spectroelectrochemical characterizations of benzothiadiazole and benzoselenadiazole containing random copolymers
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...
Synthesis, characterization, and polymerization of polyether bridged thiophene and aniline derivatives
Tirkeş, Seha; Önal, Ahmet Muhtar; Department of Polymer Science and Technology (2008)
New compounds consisting of 3-thienyl and aniline units linked by polyether bridges have been synthesized and their electrochemical polymerization was performed via constant potential electrolysis and cyclic voltammetry. In the case of 3-thienyl derivatives two compounds, 1,12-di-3-thienyl-2,5,8,11-tetraoxadodecane (MI) and 1,15-di-3-thienyl-2,5,8,11,14-pentaoxapentadecane (MII) were synthesized utilizing literature methods and their corresponding polymers, poly(I) and poly(II) were prepared in an electroly...
Syntheses and optoelectronic applications of thiadiazolo quinoxaline bearing alternating conjugated copolymers
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...
Citation Formats
Ş. Bayseç, “Synthesis, spectroscopic and electrochemical studies of perylene containing conjugated copolymers,” M.S. - Master of Science, Middle East Technical University, 2013.