alexa Stable Fluorescent Silicon Nanoclusters, Reversible Interaction With Solvents And Applications In Drug Delivery
ISSN: 2161-0703

Journal of Medical Microbiology & Diagnosis
Open Access

Like us on:
OMICS International 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

This Readership is 10 times more when compared to other Subscription Journals (Source: Google Analytics)

Share This Page

Additional Info

Loading Please wait..

June 21-23, 2017 London, UK

Hanieh Yazdanfar and Klaus Von Haeften
University of Leicester, UK
Posters & Accepted Abstracts: J Med Microb Diagn
DOI: 10.4172/2161-0703-C1-006
Fluorescent silicon nanoclusters are of considerable interest, both as means of studying the fundamental properties of silicon, the most important technological material of our age, but also for their many possible applications. Luminescent clusters of silicon have applications in Drug delivery, biological labels and sensors as well as in optoelectronic devices and lasers; also its low toxicity giving it an advantage over other light emitting materials. Fluorescent silicon nanocluster solutions have been produced in our lab with a novel method using liquid jet passes through the source of atomized silicon in the vacuum (10-2) and makes the solution of silicon clusters deposit on the cold trap. In this method several ml of sample with cluster size of 1 nm will be produced in few minutes. Aging experiment proves these fluorescent particles are stable in solution after several years; their fluorescence intensity did not change during 3 years. Samples can produce in different solvents such as water, ethanol, and isopropanol. Clusters show a solvent sensitive fluorescence band at 350-420 nm and the results show peak shifts with changing the solvent, this process is reversible. The solvent exchange suggests that fluorescence originates from the solvent/cluster-surface interface. Stern-Volmer plot describes a linear relation between fluorescent yield and concentration. The silicon nanoparticles produced in water have quantum yield between 8% and 10% which is very promising for medical applications. Chemical analysis of particles using XPS and FTIR/ATR revealed that practically all the silicon was oxidized and the silicon is present in a high oxidation state. Infrared absorption bands were attributed to SiOH, SiH, SiO, SiO2 and SiO3 investigations suggest the fluorescence emerges from these oxygen rich surface states.

Email: [email protected]

image PDF   |   image HTML

Relevant Topics

Peer Reviewed Journals
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version