New Pai (π)-Conjugated Systems Comprising Selenophene and Thiophene Derivatives

Das, Soumyajit (2011) New Pai (π)-Conjugated Systems Comprising Selenophene and Thiophene Derivatives. PhD thesis, Indian Institute of Science Education & Research Kolkata.

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This thesis deals with synthesis and characterization of new polymers comprising group-16 aromatic heterocycle, mainly, cyclopenta[c]thiophene or cyclopenta[c]selenophene derivatives and their applications as electronic materials. Dimethoxymethyl-cyclopenta[c]selenophene was prepared for the first time. Related various regiosymmetric polyselenophenes were prepared and compared with analogous polythiophenes. A part of the thesis deals with development of new solution processable polymers comprising didodecyloxymethyl-cyclopenta[c]thiophene as donor which is successfully applied in fabricating polymer field effect transistors. A series of new donor-acceptor type low band gap copolymers comprising cyclopenta[c]thiophene as active donor unit and benzothiadiazole, benzoselenadiazole, benzotriazole as acceptor were synthesized and characterized. Two new carbohydrate-functionalized oligothiophenes, comprising cyclopenta[c]thiophene as central unit, were synthesized and exploited in lectin binding studies. A novel, mild and simplified synthetic strategy for 3,4-ethylenedioxythiophene and 3,4- ethylenedioxyselenophene, the most sought after key monomers in the field of organic electronics as well as in polythiophene and polyselenophene chemistry, was developed.

Item Type: Thesis (PhD)
Additional Information: Supervisor: Dr. Sanjio S. Zade
Uncontrolled Keywords: New Polymers; Aromatic Heterocycle; Cyclopenta[c]thiophene; Cyclopenta[c]selenophene; Electronic Materials; Organic Electronics; Polythiophene; Polyselenophene Chemistry
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Engineering, Science and Mathematics > School of Chemistry
Depositing User: IISER Kolkata Librarian
Date Deposited: 12 Nov 2014 10:35
Last Modified: 12 Nov 2014 10:35

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