Cascaded F\"orster Resonance Energy Transfer and Role of the Relay Dye

TL;DR

This study investigates how adding a relay dye in a three-dye system enhances energy transfer efficiency compared to a two-dye system, with experimental validation of key parameters.

Contribution

It introduces a new cascaded donor-relay-acceptor system and quantifies the impact of relay dyes on transfer efficiency and related parameters.

Findings

Relay dye increases energy transfer efficiency.

Critical transfer distance is affected by relay dye presence.

Experimental results confirm improved efficiency in the cascaded system.

Abstract

The effect of introducing a relay dye on the energy transfer efficiency in a new donor-acceptor system has been studied. The values of the critical transfer distance, the reduced concentration, and the energy transfer efficiency of the cascaded system (consisting of three dyes- donor-relay dye-acceptor) are compared with that of the two dye system. Experimentally, it has been observed that the presence of a relay dye increases the transfer efficiency from the donor to the acceptor.