functional group


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Related to functional group: Homologous series

functional group

n.
An atom or group of atoms, such as a carboxyl group, in an organic compound that defines the structure of a family of compounds and determines the properties of the family.

functional group

n
(Chemistry) chem the group of atoms in a compound, such as the hydroxyl group in an alcohol, that determines the chemical behaviour of the compound

func′tional group`


n.
a group of atoms responsible for the characteristic behavior of the class of compounds in which the group occurs, as the hydroxyl group in alcohols.
[1935–40]

functional group

The atom (or group of atoms) present in a molecule which determines the characteristic properties of that molecule.
Translations
References in periodicals archive ?
Key statement: The present technology provides a rubber composition including: (A) 100 parts by mass of a diene rubber; (B) from 5 to 200 parts by mass of silica; (C) from 1 to 20 mass % of a silane coupling agent relative to the silica; and (D) from 1 to 20 mass % of a glycerin monofatty acid ester relative to a mass of the silica (B), the glycerin mono-fatty acid ester being derived from a fatty acid having from 8 to 24 carbons; not less than 10 parts by mass out of 100 parts by mass of the diene rubber (A) having a hetero atom-containing functional group in a main chain and/or a terminal thereof.
In the article titled "Effect of Carboxylic Functional Group Functionalized on Carbon Nanotubes Surface on the Removal of Lead from Water" [1], the name of the third author was given incorrectly as Bassam Al-Tawbini.
The step-by-step substitution of the functional group on the polypyridyl ligand allows analysis with essentially a single variable, changing the electron affinity of the terminal group on the polypyridyl ligand.
(ii) Do the nutrients derived from pisciculture in the reservoir cause an anthropogenic disturbance that increases the biomass of cyanobacterial phytoplankton functional groups? To answer these questions, we analyzed the reservoir's phytoplankton population using the functional group.
Each rare species was allocated to a Water Plant Functional Group (Brock and Casanova 1997; Casanova 2011; Campbell et al.
Furthermore the thermal treatment of sample was performed at 580[degrees]C with a ramp of 5[degrees]C/min and held for 2 h under [N.sub.2], in order to tune the surface of AC for desired functional group (quinone).
Hadba and Ladet developed a method of forming fibers from fiber precursors with a core and functional group with click reactivity.
9,254,254 B2; Johnson & Johnson has patented a composition that is comprised of a continuous water phase; a discontinuous oil phase, homogeneously distributed in said water phase, that is comprised of a polymer composition comprising a sunscreen agent with a linear, ultraviolet radiation absorbing polyether that has a covalently bound UV-chromophore and comprises a backbone having glyceryl repeat units; and an oil-in-water emulsifier component comprising an anionic oil-in-water emulsifier and a nonionic oil-in-water emulsifier having an alcohol functional group; and the linear, ultraviolet radiation absorbing polyether is present in an amount effective to provide an SPF of 10 or greater.
Appendices also include selected functional group shifts, solvent shifts, and association charts of problems with functional groups and experiments.
It is not yet clear whether species richness or functional group composition could mitigate a possibly negative reaction of the nutritive value to drought.
The dipole moment of biphenyl compound 3 having thiol functional group at 4(4?) instead of hydroxyl was 5.52 D and dihedral angle between the two rings (C2-C1-C1?-C2?) was 57.0o.
EW=%functional group/mol weight of the functional group

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