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- W2890968687 abstract "As one of the most important organic semiconductors, perylene diimide derivatives (PDIs) have been widely applied in optoelectronics. Two kinds of soluble PDIs with different imide substituents have been synthesized and their optical properties have been investigated. The photoluminescence (PL) intensity of the PDI with amino phenyl imide substituents (NH2 -PDI) is much lower than that of the PDI with octyl imide substituents (O-PDI). It can be found that the Stokes shift of O-PDI is positive, whereas, the Stokes shift of NH2 -PDI is negative. The emission intensity of the 0-0 electron transition relative to that of the 1-0 electron transition (I0-0 /I1-0 ) in the PL spectrum of O-PDI is decreased, but the value of I0-0 /I1-0 in the PL spectra of NH2 -PDI is increased as the dielectric constant of the solvent increases. The large overlap between the absorption and PL spectra plays an important role to result in the low PL intensity of NH2 -PDI. The PL decay data show that a non-radiative process, photoinduced electron transfer, also contributes to the low PL intensity of NH2 -PDI. The results can help researchers to understand the effect of the imide substituents on the optical properties of PDIs." @default.
- W2890968687 created "2018-09-27" @default.
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- W2890968687 date "2018-09-04" @default.
- W2890968687 modified "2023-10-10" @default.
- W2890968687 title "The effect of imide substituents on the optical properties of perylene diimide derivatives" @default.
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- W2890968687 doi "https://doi.org/10.1002/bio.3537" @default.
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