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Synthesis and photophysical properties of N-alkyl dithieno[3,2-b:2',3'-d]pyrrole based donor/acceptor-π-conjugated

Cuc Kim Trinh1, Gamal M Nassar2,3, Nabiha I Abdo4

  • 1Chemical Engineering in Advanced Materials and Renewable Energy Research Group, School of Engineering and Technology, Van Lang University Ho Chi Minh City Vietnam cuc.tk@vlu.edu.vn.

RSC Advances
|June 29, 2022
PubMed

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A comparison of the enthalpies of hydrogenation of dienes reveals that conjugated dienes release less heat on hydrogenation, rendering them more stable than their nonconjugated analogs.
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Organic compounds with conjugated double bonds show strong absorption features in the UV–visible region of the electromagnetic spectrum attributed to π → π* electronic excitations. Generally, a UV–vis absorption spectrum is recorded as a plot of absorbance vs wavelength. The wavelength of maximum absorbance, which manifests as a peak in the absorption spectrum, is denoted as λmax.
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