A Structure–Function Relationship for the Optical Modulation of Phenyl Boronic Acid-Grafted, Polyethylene Glycol-Wrapped Single-Walled Carbon Nanotubes

2012 ◽  
Vol 134 (42) ◽  
pp. 17620-17627 ◽  
Author(s):  
Bin Mu ◽  
Thomas P. McNicholas ◽  
Jingqing Zhang ◽  
Andrew J. Hilmer ◽  
Zhong Jin ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Polyethylene Glycol ◽  
Structure Function ◽  
Boronic Acid ◽  
Single Walled Carbon Nanotubes ◽  
Optical Modulation ◽  
Single Walled Carbon ◽  
Phenyl Boronic Acid ◽  
Function Relationship ◽  
Walled Carbon Nanotubes

scholarly journals Chemically Functionalized Water-Soluble Single-Walled Carbon Nanotubes Obstruct Vesicular/Plasmalemmal Recycling in Astrocytes Down-Stream of Calcium Ions

Cells ◽  
2020 ◽  
Vol 9 (7) ◽  
pp. 1597
Author(s):  
Manoj K. Gottipati ◽  
Elena Bekyarova ◽  
Robert C. Haddon ◽  
Vladimir Parpura
Keyword(s):  
Carbon Nanotubes ◽  
Plasma Membrane ◽  
Polyethylene Glycol ◽  
Adenosine Triphosphate ◽  
Calcium Ions ◽  
Glutamate Release ◽  
Single Walled Carbon Nanotubes ◽  
Water Soluble ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

We used single-walled carbon nanotubes chemically functionalized with polyethylene glycol (SWCNT-PEG) to assess the effects of this nanomaterial on astrocytic endocytosis and exocytosis. We observed that the SWCNT-PEG do not affect the adenosine triphosphate (ATP)-evoked Ca2+ elevations in astrocytes but significantly reduce the Ca2+-dependent glutamate release. There was a significant decrease in the endocytic load of the recycling dye during constitutive and ATP-evoked recycling. Furthermore, SWCNT-PEG hampered ATP-evoked exocytotic release of the loaded recycling dye. Thus, by functionally obstructing evoked vesicular recycling, SWCNT-PEG reduced glutamate release from astrocytes via regulated exocytosis. These effects implicate SWCNT-PEG as a modulator of Ca2+-dependent exocytosis in astrocytes downstream of Ca2+, likely at the level of vesicle fusion with/pinching off the plasma membrane.

scholarly journals Polyethylene-Glycol-Modified Single-Walled Carbon Nanotubes for Intra-Articular Delivery to Chondrocytes

ACS Nano ◽  
2014 ◽  
Vol 8 (12) ◽  
pp. 12280-12291 ◽  
Author(s):  
Cristiano Sacchetti ◽  
Ru Liu-Bryan ◽  
Andrea Magrini ◽  
Nicola Rosato ◽  
Nunzio Bottini ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Polyethylene Glycol ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

Structure, Function, and Stability of Enzymes Covalently Attached to Single-Walled Carbon Nanotubes

Langmuir ◽  
2007 ◽  
Vol 23 (24) ◽  
pp. 12318-12321 ◽  
Author(s):  
Prashanth Asuri ◽  
Shyam Sundhar Bale ◽  
Ravindra C. Pangule ◽  
Dhiral A. Shah ◽  
Ravi S. Kane ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Structure Function ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

Nitric Oxide Dependent Degradation of Polyethylene Glycol-Modified Single-Walled Carbon Nanotubes: Implications for Intra-Articular Delivery

2018 ◽  
Vol 7 (6) ◽  
pp. 1700916 ◽  
Author(s):  
Kunal Bhattacharya ◽  
Cristiano Sacchetti ◽  
Pedro M. Costa ◽  
Jens Sommertune ◽  
Birgit D. Brandner ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Carbon Nanotubes ◽  
Polyethylene Glycol ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

scholarly journals Aqueous dispersion of single walled carbon nanotubes stabilized by PEG modified diperylene bisimide and their application as an antibacterial agent

RSC Advances ◽  
2017 ◽  
Vol 7 (42) ◽  
pp. 26125-26129 ◽  
Author(s):  
Yan Sun ◽  
Zhibo Li
Keyword(s):  
Carbon Nanotubes ◽  
Polyethylene Glycol ◽  
Antibacterial Agent ◽  
Aqueous Dispersion ◽  
Single Walled Carbon Nanotubes ◽  
Antibacterial Activities ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

Polyethylene glycol modified diperylene bisimide was synthesized and applied to disperse single-walled carbon nanotubes in water. Moreover, the well-dispersed SWCNTs show excellent antibacterial activities.

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