The effect of the different donor units on fluorescent conjugated polymers containing 2,1,3-benzooxadiazole as the acceptor unit

Date

2015-08-15

Author

Goker, Seza
Hizalan, Gonul
Ileri, Merve
Hacioglu, Serife O.
Toppare, Levent Kamil

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A series of monomers were synthesized via Stille coupling to obtain low-band gap conjugated polymers namely poly(5,6-bis(octyloxy)-4,7-di(thieno[3,2-b]thiophen-2-yl)benzo[c][1,2,5]oxadiazole (PTTBO)), poly(5,6-bis(octyloxy)-4,7-di(selenophen-2-yl)benzo[c][1,2,5]oxadiazole (PSBO)) and poly(5,6-bis(octyloxy)-4,7-di(furan-2-yl)benzo[c][1,2,5]oxadiazole (PFBO)) which comprise electron-rich thieno[3,2b]thiophene (TT), selenophene and furan, as the donor units in conjugation with electron-deficient 2,1,3-benzooxadiazole (BO) moiety as the acceptor unit. All three polymers were synthesized electrochemically and well characterized. These polymers exhibited broad spectral absorptions, low-lying highest occupied molecular orbital (-5.71, -5.88, -5.76 eV), and as well as low band gap ranging from 1.45 eV to 1.56 eV. Introducing different donor moieties on the polymer backbone provides to alter the optoelectronic properties.

Subject Keywords

Benzooxadiazole, Stille coupling, Fluorescence, Selenophene, Furan, Thieno[3,2-b]thiophene

URI

https://hdl.handle.net/11511/40334

Collections

Department of Chemistry, Article