Hydrocarbon derivative An organic molecule

Hydrocarbon derivative an organic molecule that contains one or more elements in addition to carbon and hydrogen. (21.4)... 

A common class of weak bases consists of the organic molecules known as amines. An amine can be considered to be a derivative of ammonia in which one or more hydrogen atoms have been replaced by hydrocarbon groups. 

In organic ECL reactions, the luminescent species are generally derivatives of polyaromatic hydrocarbons where A and B in Eqs. (1) through (4) can be either the same species (leading to self-annihilation) or two different PAHs with either being the analyte (mixed system). Some examples of both self-annihilation and mixed system ECL reactions of organic molecules are listed in Tables 1 and 2. One well-studied example is the self-annihilation reaction between the anion and cation radicals of 9,10-diphenylanthracene (DPA) via an S-route in acetonitrile resulting in blue fluorescence characteristic of DPA [17] ... 

Many completely conjugated hydrocarbons can be built up from the annulenes and related structural fragments. Table 9.1 gives the structures, names, and stabilization energies of a variety of such hydrocarbons. Derivatives of these hydrocarbons having substituent groups or with heteroatoms in place of one or more carbon atoms constitute an important class of organic molecules. 

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