Photochemistry, terminology

The term sonochemistry is used to describe a subject which uses sound energy to affect chemical processes and the terminology is in keeping with that of the longer established methods such as electrochemistry (the use of electricity to achieve chemical activation). These older technologies require some special attribute of the system being activated in order to produce an effect e. g. the use of microwaves (dipolar species), electrochemistry (conducting medium) and photochemistry (the presence of a chromophore) whereas sonochemistry requires only the presence of a liquid to produce its effects. 

C) Insulators. - The expectation that the photochemistry of molecules adsorbed on insulator substrates would be more straightforward than that described in preceding subsections is only partly borne out by experiment. Certainly the dominant means of inducing photochemistry is direct excitation, which facilitates comparison with gas phase results. However, an array of primary processes occur on insulator surfaces which may be summarised in the terminology of Polanyi and co-workers as photodesorption, photoejection, photodissociation and... 

Hemoglobins O2 Uptake and Transport, p. 636 Molecular Logic Gates, p. 893 Molecular-Level Machines, p. 931 Phthalocyanines, p. 1069 71—71 Stacking Theory and Scope, p. 1076 Potphyrin-Based Clathrates, p. 1150 Self-Assembly Definition and Kinetic and Thermodynamic Considerations, p. 1248 Self-Assembly Terminology, p. 1263 Strict Self-Assembly and Self-Assembly with Covalent Modifications, p. 1372 Supramolecular Photochemistry, p. 1434 Vitamin 8/2 and Heme Models, p. 1569... 

Mechanistic photochemistry incorporates features of both electron-transfer and substitution reactions, but the field has some of its own terminology, which is summarized as follows ... 

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