Spanish 
Chinese 
Russian 
German 
French 
Japanese 
Portuguese 
Hindi Our Group organises 3000+ Global Conferenceseries Events every year across USA, Europe & Asia with support from 1000 more scientific Societies and Publishes 700+ Open Access Journals which contains over 50000 eminent personalities, reputed scientists as editorial board members.
Open Access Journals gaining more Readers and Citations
700 Journals and 15,000,000 Readers Each Journal is getting 25,000+ Readers
Google Scholar citation report
Citations : 3330
Journal of Biotechnology & Biomaterials received 3330 citations as per Google Scholar report
Indexed In
- Index Copernicus
- Google Scholar
- Sherpa Romeo
- Open J Gate
- Genamics JournalSeek
- Academic Keys
- ResearchBible
- China National Knowledge Infrastructure (CNKI)
- Access to Global Online Research in Agriculture (AGORA)
- Electronic Journals Library
- RefSeek
- Hamdard University
- EBSCO A-Z
- OCLC- WorldCat
- SWB online catalog
- Virtual Library of Biology (vifabio)
- Publons
- Geneva Foundation for Medical Education and Research
- Euro Pub
- ICMJE
Useful Links
Recommended Journals
Related Subjects
Share This Page
In Association with
Synthesis and characterization of Y2O3: Tm3+, Yb3+ upconversion nanoparticles for bioimaging
Annual Conference and Expo on Biomaterials
Adrine Malek Khachatourian, Farhad Golestani-Fard, Hossein Sarpoolaky, Carmen Vogt, Elena Vasileva, Mounir Mensi, Ilya Sychugov, Sergei Popov and Muhammet S Toprak
KTH Royal Institute of Technology, Sweden Iran University of Science and Technology, Iran
ScientificTracks Abstracts: J Biotechnol Biomater
Abstract
Trivalent rare earth lanthanide ions (Re3+) are used as dopants in specific inorganic ceramics because of their unique luminescence characteristic known as photon upconversion (UC) process. In UC process long wavelength excitation radiations in infrared (IR) or near IR (NIR) are absorbed and shorter wavelengths, higher energy, radiations from ultraviolet (UV) to IR are emitted. UC nanoparticles (UCNPs) have several advantages over conventional luminescent materials like organic dyes or semiconductor quantum dots (QDs) for bioimaging applications. These materials exhibit excellent photostability, continuous emission capability, sharp emission bands, longer luminescence lifetime and low cytotoxicity. Moreover, NIR excitation source used in UC process, compared to UV excitation used in conventional luminescent materials, reduces the photodamage to living organisms and minimizes the autofluorescence from biological samples, along with enhanced tissue penetration depth. Here, we report on the fabrication of well dispersed, spherical Y2O3:Tm3+, Yb3+ UCNPs with average size of 70�������±8 nm using microwave assisted heating method. This is a green, energy efficient and highly reproducible method. X-Ray powder diffraction analysis confirmed the highly crystalline cubic Y2O3 phase structure of synthesized UCNPs. Photoluminescence analysis of Y2O3:Tm3+, Yb3+ nanoparticles showed that in 980 nm laser diode excitation nanoparticles emit strong blue, weak red and NIR emissions attributed to the 1G4���¢��������3H6, 1G4���¢��������3F4 and 3H4���¢��������3H6 transitions of Tm3+ ion, respectively. Further, the effect of the molar concentration of Tm3+ and Yb3+ on UC intensity of nanoparticles has been investigated. Due to the enhanced characteristics and expected low toxicity the Y2O3:Tm3+, Yb3+ UCNPs are promising alternatives to conventional luminescent probes for bioimaging.Biography
Adrine Malek Khachatourian has completed her BSc degree in Material Science Engineering and MSc degree in Materials Engineering-Ceramic in 2010 from Iran University of Science and Technology (IUST). She has spent two years on her PhD at IUST and currently she is pursuing her PhD study at the Department of Materials and Nano Physics from KTH Royal Institute of Technology, Stockholm, Sweden under the guidance of Professor Muhammet S Toprak. Her research interest focuses on synthesis and characterization of various rare earth doped Yttrium oxide luminescent nanoparticles for fluorescence bioimaging via microwave assisted heating method.
Email: adrine@kth.se
