Covalent surface modification of graphene using photosensitive functional group
Journal Title: INTERNATIONAL JOURNAL OF RECENT TRENDS IN SCIENCE AND TECHNOLOGY - Year 2014, Vol 11, Issue 2
Abstract
Graphene (GR) attracts increasing attention due to its unique physical and chemical properties, thus potential applications in optics and electronics. However the gapless band structure greatly limits its wide applications in optoelectronic devices. Surface functionalization proves to be an effective method to tune the properties of graphene. In this study, hybrid GR materials with enhanced properties were achieved through GR surface functionalization by using aryl diazonium salts of photosensitive azobenzene. We found that conformational transition from trans to cis states of azobenzenes induces hole-doping in graphene through charge transfer. Significantly different from the pristine graphene, the graphene-azobenzene hybrids exhibited strong photoisomerization of azobenzene between cis and trans forms under UV and visible light illumination. The large photoresponse obtained from the functionalized GR could be ascribed to the rigid chemical environment with azobenzene moieties chemically bonded onto the GR surface. Such surface-functionalized GR hybrids with unique optical properties position them as promising materials for optoelectronic devices.
Authors and Affiliations
Deepshikha
Keywords
Related Articles
- EP ID EP110472
- DOI -
- Views 105
- Downloads 0
Palmaris Longus - Upside Down!!!!
Palmaris longus muscle is a very well known muscle for variations. It can be absent, digastric, duplicated, having proximal tendon. These variations are important in grafting surgeries like tendon transfer, ptosis...
Comparison of phenotypic methods for the detection of extended spectrum beta lactamase production among enterobacteriaceae
Introduction: Extended-spectrum β-lactamases (ESBLs) are enzymes which hydrolyse extended-spectrum Cephalosporins and are more common in recent times. Aim: We aimed to compare Chrome agar, double disk synergy test (DDST)...
Assessment of Nutritional Status of Medical Students
The transition from high school to college can be a stressful lifestyle change for young adults. During this transition period students can develop a variety of health attitudes and behaviors that may have a negative imp...
Total laparoscopic hysterectomy versus non–descent vaginal hysterectomy: An observational study
Background: Hysterectomy is one of the most common surgery performed by Gynaecologist. As the time is passing trend is towards those approaches which are minimally invasive, less painful, have less complications, less bl...
Study of origin of inferior Phrenic arteries
Aim: The knowledge of arterial anatomical variation is important for surgical and radiological diagnoses. Objective: Inferior phrenic arteries which supply the diaphragm are known to have variation in their origin. With...