| 초록 |
o-Carborane was used to alter the electronic states of π-conjugated organic aryls, and demonstrated to be an effective electron controlling unit which can tune HOMO and LUMO energies for the electron transfer. Two different types of bis-aryl compounds were chosen to this end; one with di-phenyls and its fused fluorenyl and the other with two isomers of naphthyls, α- and β-forms. It has been found that among the series of aryl compounds the second type naphthyls were more susceptible to the electronic alteration and α-isomer of naphthyl showed the most perturbed electronic state. Final verification of the lowered energy was made from the measurement of the electron transfer efficiency between the well-studied Iridium based photosensitizer, Ir(ppy)3 and two typical bis-aryls-o-carboranes, α-Np and Ph and electron transfer efficiency of α-Np is ten times greater than that of Ph. |
