Figure 4.

Absorption and emission characteristics of TAT‐3DBTO₂ in solution. a) Extinction coefficient spectra of the acceptor (A), donor (D), and TAT‐3DBTO₂ molecules, all diluted in dichloromethane (CH₂Cl₂) solvent. Inset graph also shows the chemical structure of A and D units. b) Normalized photoluminescence (PL) spectra of acceptor (data taken from ref. 20), donor, and TAT‐3DBTO₂ molecules. D and A are diluted in toluene solvent, TAT‐3DBTO₂ is diluted in toluene and CH₂Cl₂. The peak around 674 nm is the second order peak from the excitation beam.