0 a chemical bond in which two atoms share one or more pairs of electrons that hold them together -- 共價鍵（原子間共用電子而形成的化學鍵）
To uncage molecules, a photolysis system is required to cleave the covalent bond.
Secondly, since there is no covalent bond, various indicators can be used with the same receptor.
Photochemical routes to oxyallyl cations generally result in the formation of a new covalent bond before the cycloaddition itself takes place.
These products incorporate a unique synthetic bioadhesive that forms a covalent bond with tissue proteins enabling adhesion to internal organs and achieving a sealing effect.
This new peptide tag can allow scientists to target and isolate their proteins of interest through a permanent covalent bond.
While traditional chemistry focuses on the covalent bond, supramolecular chemistry examines the weaker and reversible noncovalent interactions between molecules.
They are not full charges because the electrons are still shared through a covalent bond between the oxygen and carbon.
If the unpaired electrons can spin-pair to form a covalent bond, then the covalent bonding interaction can lower the energy of the charge transfer state.
