Donor-Acceptor Supramolecules Based on Poly(3-hexylthiophene) and Functionalized/Grafted Reduced Graphene Oxide with Thiophene Adducts

سال انتشار: 1396
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 480

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شناسه ملی سند علمی:

IAAMM01_088

تاریخ نمایه سازی: 17 آبان 1396

چکیده مقاله:

Reduced graphene oxide (rGO) was functionalization with 2- thiophene acetic acid(Rgo-ƒ-TAA)and grafted with poly(3-dodecylthiophene) (Rgo-g-DDT)and poly(3-thiophene ethanol) Rgo-ƒ-PTEt to manipulate the orientation and patterning of crystallized poly (3-hexylthiophene)(P3HT). P3HT chains preferred to interact with their thiophene rings with bared rGO surface, resulting in a conventional face- on orientation. In these hybrids, beyond the critical beyond the critical length of P3HT nanofibers developed onto the rGO (> 100 nm), an inclination occurred after solvent evaporation, thereby the face-on non-inclined fibers changed to the edge on inclined ones. In P3HT/rGO-f- TAA supramolecular structures patterned with P3HT short nanofibrils (42-95 nm in length), the orientation of P3HT chains changed from face-on to edge on, originating from the strong interactions between the hexyl side chains of P3HTs and 2-thiophene acetic acid functional groups of rGO. Supramolecular structures based on grafted rGO demonstrated patched-like morphology composed of flat-on P3HTs with main backbones perpendicular to the substrate. The grafted polythiophenic oligomers onto rGO (rGO-g-PDDT and rGO-g PTEt) provoked P3HT backbones to vertically attach to the surface and remain perpendicular even after solvent evaporation. By changing the growth conditions such as solvent quality, preparation time, and grafting type, a unique patched like patterning with 196-410 nm length and 52 thickness was acquired on rGO surface. Hence, the dominant parameter in these systems was the grafting of rGO surface. electrical conductivities of supramolecules based on P3HT and rGO, r GO-ƒ -TAA,rGO--g PTEt and rGO-g-ranged in 3.81, 3.88, 3.91, 9.89, and 10.64, 10.71 S/cm, respectively.The flat on orientation was the best for P3HT chains assembled onto rGO, which was acquired for rGO-g- PDDT and rGO-g-PTEt systems. The face-on P3HT/rGO hybrids and, subsequently, the edge - on P3HT/rGO-f-TAA hybrids also reflected the optical and supramolecular donor-acceptor properties based on the ultraviolet-visible and photoluminescence analyses

نویسندگان

Saleheh Abbaspoor

Institute of Polymeric Materials, Sahand University of Technology, Tabriz Iran

Raana Sarvari

Department of Chemistry, Payame Noor University Tehran, Iran

Samira Agbolaghi

Instituteof Polymeric Materials, Sahand University of Technology, Tabriz Iran

Sahar Aghapour

Institute of Polymeric Materials, Sahand University of Technology, Tabriz Iran,