Tunable molecular configuration for significant enhancement of two-photon absorption based on novel octupolar benzoimidazole derivatives

Effective management of intramolecular charge transfer to obtain from blue to violet-blue OLEDs based on a couple of phenanthrene isomers

“…[18] By comparison with the absorption of them, the charge transfer absorption band from the electron donor to the electron-withdrawing imidazole in m-PTPAPI is much lower than that of p-PTPAPI, indicating the meta-configuration will be benefit to prevent or reduce the state to the excited state. [19] By calculating with the Lippert−Mataga [20] theory, the value is 34.5 D for p-PTPAPI and 17.6 D for m-PTPAPI, The value of p-PTPAPI is larger than that of m-PTPAPI, further reflecting the ICT process in p-PTPAPI is stronger than that of m-PTPAPI. Table 2.…”

Controllable molecular configuration for significant improvement of blue OLEDs based on novel twisted anthracene derivatives

“…To expand the family of twisted anthracene-type derivative with excellent performance of OLEDs, we adopted anthracene and its derivatives as the plane to form twisted structure. In addition, recently we have reported one kind of the constitution isomerism to manage their excited-state and intramolecular charge-transfer [22,23]. Therefore, based on our group's work, two novel twisted anthracene derivatives were designed with the same building blocks but only difference of phenyl substitution position.…”