Abstract
Abstract Exciplex (DA)* and triple exciplex (DDA)* formation between 1,4-dicyanobenzene (DCB) and alkylnaphthalenes was investigated by steady-state and nanosecond time-resolved fluorescence spectroscopies at room temperature. Typical two-component decay of the exciplex and the fluorescence rise of the triple exciplex were observed in dioxane solutions of DCB and several alkylnaphthalenes. The results imply a significant dissociation process of (DDA)* to (DA)*. Triple exciplex formation via excimer (DD)* was proposed to be significant in a concentrated solution of alkylnaphthalene (>10−1 M), while the triple exciplex was formed via the exciplex in a dilute solution of the electron donor.
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