Kang, Hyun Suk published the artcileConjugated-linker dependence of the photophysical properties and electronic structure of chlorin dyads, SDS of cas: 18512-55-5, the publication is Journal of Porphyrins and Phthalocyanines (2021), 25(7/8), 639-663, database is CAplus.
The synthesis, photophys. properties and electronic structure of seven new chlorin dyads and associated benchmark monomers are described. Each dyad contains two identical chlorins linked at the macrocycle β-pyrrole 13-position. The extent of electronic communication between chlorin constituents depends on the nature of the conjugated linker. The communication is assessed by modification of prominent ground-state absorption and redox properties, rate constants and yields of excited-state decay processes, and mol.-orbital characteristics. Relative to the benchmark monomers, the chlorin dyads in toluene exhibit a substantial bathochromic shift of the long-wavelength absorption band (30 nm average), two-fold increased radiative rate constant [average (10 ns)-1 vs. (22 ns)-1], reduced singlet excited-state lifetimes (average 5.0 ns vs. 8.2 ns), and increased fluorescence quantum yields (average 0.56 vs. 0.42). The excited-state lifetime and fluorescence yield for the chlorin dyad with a benzothiadiazole linker are reduced substantially in benzonitrile vs. toluene due largely to ∼ 25-fold accelerated internal conversion. The results aid design strategies for mol. architectures that may find utility in solar-energy conversion and photomedicine.
Journal of Porphyrins and Phthalocyanines published new progress about 18512-55-5. 18512-55-5 belongs to naphthyridine, auxiliary class Alkynyl,Anthracene, name is 9,10-Diethynylanthracene, and the molecular formula is C18H10, SDS of cas: 18512-55-5.
Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem