Gold nanostar-enhanced surface plasmon resonance biosensor based on carboxyl-functionalized graphene oxide

2016 ◽  
Vol 913 ◽  
pp. 137-144 ◽  
Author(s):  
Qiong Wu ◽  
Ying Sun ◽  
Pinyi Ma ◽  
Di Zhang ◽  
Shuo Li ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Functionalized Graphene ◽  
Functionalized Graphene Oxide ◽  
Surface Plasmon Resonance Biosensor ◽  
Gold Nanostar ◽  
Enhanced Surface

Graphene/Graphene Oxide-Based Ultrasensitive Surface Plasmon Resonance Biosensor

Plasmonics ◽  
2016 ◽  
Vol 12 (6) ◽  
pp. 1991-1997 ◽  
Author(s):  
Bahar Meshginqalam ◽  
Mohammad Taghi Ahmadi ◽  
Razali Ismail ◽  
Arash Sabatyan
Keyword(s):  
Graphene Oxide ◽  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Surface Plasmon Resonance Biosensor

scholarly journals Boron-Doped Reduced Graphene Oxide with Tunable Bandgap and Enhanced Surface Plasmon Resonance

Molecules ◽  
2020 ◽  
Vol 25 (16) ◽  
pp. 3646 ◽  
Author(s):  
Muhammad Junaid ◽  
M. H. Md Khir ◽  
Gunawan Witjaksono ◽  
Nelson Tansu ◽  
Mohamed Shuaib Mohamed Saheed ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
High Performance ◽  
Light Sensing ◽  
Tunable Bandgap ◽  
Boron Doped ◽  
Reduced Graphene ◽  
Enhanced Surface

Graphene and its hybrids are being employed as potential materials in light-sensing devices due to their high optical and electronic properties. However, the absence of a bandgap in graphene limits the realization of devices with high performance. In this work, a boron-doped reduced graphene oxide (B-rGO) is proposed to overcome the above problems. Boron doping enhances the conductivity of graphene oxide and creates several defect sites during the reduction process, which can play a vital role in achieving high-sensing performance of light-sensing devices. Initially, the B-rGO is synthesized using a modified microwave-assisted hydrothermal method and later analyzed using standard FESEM, FTIR, XPS, Raman, and XRD techniques. The content of boron in doped rGO was found to be 6.51 at.%. The B-rGO showed a tunable optical bandgap from 2.91 to 3.05 eV in the visible spectrum with an electrical conductivity of 0.816 S/cm. The optical constants obtained from UV-Vis absorption spectra suggested an enhanced surface plasmon resonance (SPR) response for B-rGO in the theoretical study, which was further verified by experimental investigations. The B-rGO with tunable bandgap and enhanced SPR could open up the solution for future high-performance optoelectronic and sensing applications.

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