Narrow Results

Monolayers of thymine amphiphile containing azobenzene chromophore (Azo-Thy) were prepared on various aqueous oligonucleotide (dA₃₀, d(GA)₁₅, d(GGA)₁₀) subphases. Pressure–area isotherms and reflection absorption spectra of the monolayers on dA₃₀ or d(GA)₁₅ solution showed that the H-aggregate of the azobenzene units was formed at higher surface pressure than 25 mN/m. In contrast, the monolayer on an aqueous d(GGA)₁₀ solution did not form any aggregates of the azobenzene units even at high surface pressure. Base-pair formation between Azo-Thy and template d(GGA)₁₀ could give free volume to the azobenzene units in the monolayer to prevent the aggregation of the azobenzene units at the air–water interface.

Monolayers of thymine amphiphile containing azobenzene chromophore (Azo-Thy) were prepared on various aqueous oligonucleotide (dA₃₀, d(GA)₁₅, d(GGA)₁₀) subphases. Pressure–area isotherms and reflection absorption spectra of the monolayers on dA₃₀ or d(GA)₁₅ solution showed that the H-aggregate of the azobenzene units was formed at higher surface pressure than 25 mN/m. In contrast, the monolayer on an aqueous d(GGA)₁₀ solution did not form any aggregates of the azobenzene units even at high surface pressure. Base-pair formation between Azo-Thy and template d(GGA)₁₀ could give free volume to the azobenzene units in the monolayer to prevent the aggregation of the azobenzene units at the air–water interface.