zwitterionic

In earlier work, the investigators had found that the kidneys efficiently filter out of the blood stream nanoparticles of approximately 5.5 nanometers (nm) in diameter and that are zwitterionic, that is they have both positive and negative charges on their surface.

PhysOrg.com - latest science and technology news stories PhysOrg Team 2010

The researchers also developed ultrasmall, zwitterionic, brightly fluorescent nanoparticles consisting of a zinc-cadmium sulfide core surrounded by a cadmium selenide shell and a cysteine coating.

PhysOrg.com - latest science and technology news stories PhysOrg Team 2010

Positively charged surfaces impeded the translocation of nanoparticles, while the negatively charged, polar, and zwitterionic surfaces allowed translocation from lungs to lymph nodes.

Ars Technica Yun Xie 2010

The smallest zwitterionic particle 5nm can be easily cleared from the body.

Ars Technica Yun Xie 2010

The smallest zwitterionic particle 5nm can be easily cleared from the body.

Ars Technica Yun Xie 2010

Stable room temperature molecular assembly of zwitterionic organic dipoles guided by Si (111) - 7×7 template effect,

Naturejobs - All Jobs 2010

Stable room temperature molecular assembly of zwitterionic organic dipoles guided by Si (111) - 7×7 template effect,

Naturejobs - All Jobs 2010

They also varied the nanoparticle's coating to produce particles that were polar, positively charged, negatively charged, or zwitterionic electronically neutral due to a balance between a positive and negative charge on the same compound.

Ars Technica Yun Xie 2010

Stable room temperature molecular assembly of zwitterionic organic dipoles guided by Si (111) - 7×7 template effect,

Naturejobs - All Jobs 2010

Positively charged surfaces impeded the translocation of nanoparticles, while the negatively charged, polar, and zwitterionic surfaces allowed translocation from lungs to lymph nodes.

Ars Technica Yun Xie 2010