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News and Articles on Covalent Bond
Smallest Electronic Component: Researchers Create Molecular Diode Oct 20, 2009
For a molecule to perform this feat, Tao explains, it must be physically asymmetric, with one end capable of forming a covalent bond with the negatively charged anode and the other with the positive cathode terminal ... Such molecules display large electrical conductivity and have asymmetrical ends capable of spontaneously forming covalent bonds with metal electrodes to create a closed circuit. (Science Daily)
See The Force: Mechanical Stress Leads To Self-sensing In Solid Polymers May 15, 2009
After the polymer reaches a critical strain, a force-induced red color results from selective covalent bond cleavage in the mechanophore just prior to failure. (Credit: Beckman Institute ITG, Darren Stevenson and Alex Jerez). (Science Daily)
Twin Nanoparticle Shown Effective At Targeting, Killing Breast Cancer Cells Mar 15, 2009
In a neat twist, the Brown-led team used a pH-sensitive covalent bond to connect the gold nanoparticle with the cisplatin to ensure that the drug was not released into the body but remained attached to the nanoparticle until it was time for it to be released into the malignant cell. In laboratory tests, the gold-iron oxide nanoparticle combination successfully targeted the cancer cells and released the anti-cancer drugs into the malignant cells, killing the cells in up to 80 percent of cases. (Science Daily)
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