In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Excited-state engineering of oligothiophenes via phosphorus chemistry towards strong fluorescent materials, published in 2021, which mentions a compound: 2923-28-6, mainly applied to phosphorus chem excited state engineering oligothiophene fluorescent material, SDS of cas: 2923-28-6.
Due to efficient intersystem crossing (ISC), combined with efficient nonradiative processes of the triplet excited state, oligothiophenes generally exhibit very weak luminescence. P-bridged terthiophenes (P-terThs) and P-bridged bithiophenes (P-biThs) were synthesized. The diverse and well-defined P-chem. was applied to fine tune the photophys. properties of these materials. The asym. electronic coupling between the P-center and terThs suppressed the electronic interactions of 2 terTh and biTh moieties in the ground state S0. Particularly, P-terThs and P-biThs having a pos. charged P(+)-center induce pronounced asym. electronic environments on the 2 terThs and 2 biThs, resp., which allows relaxation from the initial excited state via symmetry breaking charge transfer (SBCT) to give the charge separated state SSBCT. P-terThs and P-biThs having a pos. charged P(+)-center exhibit stronger SBCT than others, which may result in a weaker ISC of oligothiophenes, and consequently lead to the luminescence quantum yields (PLQYs) being ≤71% and 39%, resp. The current study uncovered detailed insights on the effects of P chem. on the SBCT of oligothiophenes and their resulting effects on the photophys. properties of P-bridged oligothiophenes, which were not previously addressed in oligothiophenes.
Compounds in my other articles are similar to this one(Silver(I) trifluoromethanesulfonate)SDS of cas: 2923-28-6, you can compare them to see their pros and cons in some ways,such as convenient, effective and so on.
Reference:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem