Synthesis and Self-Assembly of Donor鈥揂cceptor鈥揇onor Based Oligothiophenes and Their Optoelectronic Properties

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• 作者：Raja Bhaskar Kanth Siram ; Kristen Tandy ; Marta Horecha ; Petr Formanek ; Manfred Stamm ; Suren Gevorgyan ; Frederik C. Krebs ; Anton Kiriy ; Paul Meredith ; Paul L. Burn ; Ebinazar B. Namdas ; Satish Patil
• 刊名：Journal of Physical Chemistry C
• 出版年：2011
• 出版时间：July 28, 2011
• 年：2011
• 卷：115
• 期：29
• 页码：14369-14376
• 全文大小：1046K
• 年卷期：v.115,no.29(July 28, 2011)
• ISSN：1932-7455

文摘

In this work, the synthesis of an oligothiophene having a donor鈥揳cceptor鈥揹onor (D鈥揂鈥揇) chromophore with hydrogen bonding groups is described. The D鈥揂鈥揇 molecule was demonstrated to self-organize via intermolecular H-bonding between barbituric acid units. Interactions between the oligothiophene subunits were also found to be important, affording nanoribbons that could be observed by atomic force and transmission electron microscopy. The applicability of the oligothiophene for organic electronic applications was investigated by fabricating organic field-effect transistors (OFETs) and organic photovoltaic devices. The OFET measurements yielded p-type mobility of 7 脳 10^鈥? cm²/(V s), and when blended with C₆₀-PCBM, the photovoltaic efficiency was observed to be 0.18%.