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Facile fabrication of graphene devices through metalloporphyrin induced photocatalytic reduction

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Facile fabrication of graphene devices through metalloporphyrin induced photocatalytic reduction
นักวิจัย : Khaderbad, Mrunal A. , Tjoa, Verawati , Oo, Than Z. , Wei, Jun , Sheri, Madhu , Mangalampalli, Ravikanth , Rao, V. Ramgopal , Mhaisalkar, Subodh Gautam , Mathews, Nripan
คำค้น : -
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2555
อ้างอิง : Khaderbad, M. A., Tjoa, V., Oo, T. Z., Wei, J., Sheri, M., Mangalampalli, R., et al. (2012). Facile fabrication of graphene devices through metalloporphyrin induced photocatalytic reduction. RSC Advances, 2(10), 4120-4124. , 2046-2069 , http://hdl.handle.net/10220/10569 , http://dx.doi.org/10.1039/c2ra00792d
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : RSC advances
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

Solution processed graphene oxide (GO) sheets are electronically insulating and are generally reduced by chemical treatment or heat treatment in a reducing environment to recover their electronic properties, forming reduced graphene oxide (rGO). Here, GO sheets were photocatalytically reduced using 5-(4-hydroxyphenyl)-10,15,20-tri(p-tolyl) zinc(II) porphyrin (Zn(II)TTPOH) under ambient conditions. After illumination in the presence of a hole scavenger and Zn(II)TTPOH, the formation of rGO was confirmed through optical absorption measurements and monitoring of the D/G peak ratios from Raman measurements. The resultant rGO formed stable aqueous suspensions with the Zn(II)TTPOH. The electron transfer from photoexcited porphyrin to GO was studied through photoluminescence measurements. Utilising this photoreduction process as a post processing strategy, an increase in conductivity and an ambipolar field effect transistor (FET) behaviour were demonstrated on prepatterned GO devices. We have also confirmed the photoreduction process at low energy wavelengths (588 nm), indicating the versatility of using metalloporphyrins as photocatalysts for graphene oxide reduction.

บรรณานุกรม :
Khaderbad, Mrunal A. , Tjoa, Verawati , Oo, Than Z. , Wei, Jun , Sheri, Madhu , Mangalampalli, Ravikanth , Rao, V. Ramgopal , Mhaisalkar, Subodh Gautam , Mathews, Nripan . (2555). Facile fabrication of graphene devices through metalloporphyrin induced photocatalytic reduction.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Khaderbad, Mrunal A. , Tjoa, Verawati , Oo, Than Z. , Wei, Jun , Sheri, Madhu , Mangalampalli, Ravikanth , Rao, V. Ramgopal , Mhaisalkar, Subodh Gautam , Mathews, Nripan . 2555. "Facile fabrication of graphene devices through metalloporphyrin induced photocatalytic reduction".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Khaderbad, Mrunal A. , Tjoa, Verawati , Oo, Than Z. , Wei, Jun , Sheri, Madhu , Mangalampalli, Ravikanth , Rao, V. Ramgopal , Mhaisalkar, Subodh Gautam , Mathews, Nripan . "Facile fabrication of graphene devices through metalloporphyrin induced photocatalytic reduction."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2555. Print.
Khaderbad, Mrunal A. , Tjoa, Verawati , Oo, Than Z. , Wei, Jun , Sheri, Madhu , Mangalampalli, Ravikanth , Rao, V. Ramgopal , Mhaisalkar, Subodh Gautam , Mathews, Nripan . Facile fabrication of graphene devices through metalloporphyrin induced photocatalytic reduction. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2555.