Organization and distribution of molecules chemically bound to silica

Publisher Summary This chapter focuses on the chemistry of excited complexes. The term exciplex (excited complex) is used to describe an electronically excited molecular complex of definite stoichiometry. Complexes falling into this broad classification include excimers (excited dimers) (electronically excited complexes formed between identical atoms or molecules), heteroexcimers (electronically excited complexes formed between two non identical atoms or molecules), and excited charge-transfer complexes (complexes produced by excitation of ground state molecular complexes for which there is conclusive evidence for association in the ground state). The formation of intermolecular complexes in fluid solution requires that after excitation of one of the partners, collision with the other partner must occur within the lifetime of the excited state. The maximum rate constant for the process is determined by the rate constant for diffusion control in the solvent employed.

The Chemistry of Excited Complexes: a Survey of Reactions

Low-temperature fluorescence spectrometric determination of polycyclic aromatic hydrocarbons by matrix isolation.

Application of the Shpol'skii effect to quantitative analysis of monomethylphenanthrene isomers

Solvent effects on intramolecular excimer formation of dipyrenylalkanes

Previous results and theories concerning the emission of light from frozen solutions of pyrene in hydrocarbon solvents are examined in the context of the present experiments. It is suggested that the results are due to the formation of pyrene crystals, which exhibit ?excimer? fluorescence.

RJ McDonald

Papers

The fluorescence of pyrene in frozen solutions