functional group

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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 ?
Contract award: Supply cyclotron with its own protection (self-shielded) 2 integrated functional groups radiopharmaceutical objective fundamental research and development center experimental translational medicine / Transcend
Authenticate users from different functional groups and geographic locations via LDAP (Lightweight Directory Access Protocol) making it easier to manage and control expanded usage of the aPriori platform.
Divergent syntheses of dendrimers need to react with increasing numbers of surface functional groups on each growing molecule to form the next generation of the polymer.
Alavi Nikjeh said, "The results imply the alteration of stoichiometric ratio and less formation of hard phase in the polymeric mass for which the reasons are the presence of reactive functional groups on the nanosilica surface and the creation of stronger interactions within the interfacial area of nano-phase and polymeric matrix.
The goal of this work is to develop powerful synthetic approaches for the selective C-C bond activation and demonstrate that it has the potential to be a general principle in organic synthesis for the regio-, diastereo- and even enantiomerically enriched preparation of adducts despite that C-C single bonds belong among the least reactive functional groups in chemistry.
The core is produced by controlled hydrolysis of a silane with functional groups and the branches developed by amine condensation reactions.
Students should be able to name and draw simple molecules, give their names and identify functional groups, but often struggle to do so.
Compared to the traditional method, in which chemists modify only the existing functional groups on a compound, CH activation more directly boosts the complexity of a compound, giving it potentially valuable new properties.
Offering more than 300 illustrations showing all the major functional groups and their frequency ranges, this also includes over 120 charts and graphs explaining overlapping spectra.
The outer layer comprises at least one light-stable aliphatic thermoplastic polyurethane containing at least one pendent functional group selected from the group consisting of hydroxyl and carboxyl functional groups, and at least one heat-activated crosslinking monomer or agent.
LIR is crosslinkable by reaction of its functional groups using metal, epoxy, isocyanate and amine compounds.
The content of total phenolic hydroxyl groups in residual lignins, which decreased with decreasing cooking temperature, also correlated well with the bleachability, as measured by the total kappa factor, and functional groups such as copper number and carboxyl group of the bleached pulp.

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