Design and development of new conjucated polymers for organic application in photovoltaic devices (Doctoral thesis)

Κατσούρας, Αθανάσιος

n the present PhD thesis alternating copolymers based on indacenodithiophene (IDT) andindacenodithienothiophene (IDTT) monomers were thoroughly studied. Various alternatingcopolymers bearing high energy band gaps were designed theoritacally, synthesizedexperimentally and characterized via specific characterization methods based on the IDT andIDTT monomers as donors and using the following monomers as acceptors: 1. Thienopyrrolodione units for the series of alternating copolymers of the XPL series (codenames: XPL1-XPL6). The major reason was to study the effect of the ligands natureparameter. 2. Thiadiazinone and thiadiazinone moieties for the alternating copolymers of the Π series (codename: Π1-Π8). These copolymers were different based on the ligand nature (phenyl- orthienyl-) on the IDT monomer or the thiadiazine derivative (pentafluoro-thiadiazimine orthiadiazinone) or the existence of thiophene molecules or not between the IDT and thiadiazinemonomers in order to study the effect of the ligand nature paprmater as well as thebimolecular interactions paprameter. 3. Quinoxaline monomers for the alternating copolymers of the K series (code name: Κ1-Κ3) inorder to study the effect on the bond length alternation parameter by the addition of thiopheneand thiazole molecules on the main macromolecular backbone. Furthermore, in order to studythe effect of the molecular weight on the final properties alternating copolymers weresynthesized with IDT and quinoxaline monomer in different molecular weights (samples withcode names: cc006_HMW, cc006_MMW, cc006_LMW. Also the guinoxaline unit were usedbarying one or two fluorine atoms in order to study the effect of the rotation angle parameteras well as the ligand nature parameter. 4. Benzothiadiazole monomer and it’s derivatives were used in the synthesis of new typealternating copolymers with IDT and IDTT respectively in order to study the effect of a newnegatively charged monomer except from the widely used guinoxaline. The samples preparedwere of the CTL series (code name: CTL1-CTL6). The effect of the negatively chargedspecies parameter as well as that of the ligand nature were excessively studied.
Institution and School/Department of submitter: Πανεπιστήμιο Ιωαννίνων. Πολυτεχνική Σχολή. Τμήμα Μηχανικών Επιστήμης Υλικών
Subject classification: Φωτοβολταϊκά δυναμικά συστήματα
Keywords: Οργανικά φωτοβολταϊκά,Συζυγιακά πολυμερή,Οργανικές ενώσεις,Ενεργειακές αποδόσεις,Φωτοβολταϊκά,Σύνθεση αρωματικής πολυσυμπύκνωσης Stille,Stille synthesis,Conjucated monomers,Organic photovoltaics,Photovoltaics aplivations
Appears in Collections:Διδακτορικές Διατριβές

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