NanoparticlesIntroduction

a. Particles sizes less than 100nmb. Strikingly different properties due to their sizesc. Ability to measure and manipulate matter on the nanometer level is making possible a new generation materials with enhanced mechanical, optical, transport and magnetic propertiesd. From micro-nano level-change in its physical as well as chemical properties: increase in the ratio of the surface area to volume and size of the particle.

For Ag nanoparticles

Potentionally useful for applications

such as

a. Catalyst for reduction of aromatic nitro compounds

b. Surface-enhanced agent

c. An additive for chiral sparation

d. An antimicrobial agent

Review of Related Literature

Synthesis of Metal Nanoparticles

a. Au Nanoparticles

b. Cu Nanoparticles

c. Ni Nanoparticles

d. Fe Nanoparticles Fe Nanoparticles

Method of Synthesis 1. RF Plasma (radio frequency plasma) 2. Chemical Methods 3. Thermolysis (Thermal decomposition) 4. Pulsed Laser Methods

1. RF Plasma

2. Chemical Methods

3. Thermolysis (Thermal decomposition)

4. Pulsed Laser Methods

Synthesis of Silver Nanoparticles

The synthesis procedure shown here was adapted by Steve Ng and Chris Johnson from a procedure developed by S.D. Solomon, M. Bahadory, A.V. Jeyarajasingam, S.A. Rutkowsky, C. Boritz, and L. Mulfinger, Journal of Chemical Education, 84, 322-325, (2007).

The formation of silver nanoparticles can be observed by a change in color since small nanoparticles of silver are yellow. A layer of absorbed borohydride anions on the surface of the nanoparticles keep the nanoparticles separated. When sodium cholride (NaCl) is added the nanoparticles aggregate and the suspension turns cloudy gray. The addition of a small amount of polyvinyl pyrrolidone will prevent aggregation.

Procedure

Integrated Nanoparticle-Biomolecule

Synthesis and Properties of Biomolecule Functionalized Nanoparticles

Biomolecule Functionalized Nanoparticles for Controlled Chemical Reactivity

The Aggregation of Biomolecule Functionalized

Nanoparticles Assembly of Biomolecule Nanoparticle Architectures on Surfaces Functional Biomolecule Nanoparticle Structure on Surfaces for Ap

plication as sensors Biomolecule Functionalized Magnetic Particles Biomolecule Based Nanocircuitry

Silver nanoparticle Coupled with Polymers Strong resonant coupling with light and plasmons of Ag na

noparticle lead to huge number of amazing and technologically important optical effects, one of resonant coupling with light and plasmons is the enhancement of fluorescence from a nearby molecule.

Interaction of Ag Nanoparticles with Diseases The interaction of metal nanoparticles, specifically silver, w

ith biomolecules and microorganisms is a growing field of study. Many areas of research have exploring the possibilitie

s of Ag nanoparticles curing or inhibiting some diseases.

Ag Nanoparticle Used as Biosensors to Biomolecules During the recent years, scientific interest has been raised b

y the discovery of different nanoparticles. One of these nanoparticles is the Ag nanoparticles due to its good conduction of electricity and its ion can easily combine with many biological compounds through electrovalent bond or coordinate bond. Ag nanoparticle can be also easily absorbed in an electrode which turns to easily catalyze reduction – oxidation processes. This certain kind of property of silver makes it a good biosensor for biological molecules.

Proposal