| 초록 |
We were designed and studied two asymmetric alkylphenyl- substituted anthracene for small molecule solar cells applications, NDHPEA and TNDHPEA. The first such molecule was 9,10-bis((4-hexylphenyl)ethynyl)-2-(naphthalen-2-yl)anthracene (NDHPEA), a small molecule containing an alkylphenyl-substituted-anthracene core unit with a naphthalene terminal unit. The second such molecule was 2-(9,10-bis((4-hexylphenyl)ethynyl)anthracen-2-yl)-5-(naphthalen-2-yl)thiophene (TNDHPEA), a small molecule composed of the core moiety used in NDHPEA, except for the introduction of a thiophene-bridged naphthalene arm unit. The two molecules differed only in the presence of a thiophene spacer. We focused on how the thiophene spacer influenced the nanoscale crystalline characteristics of the active layers and the resulting device performances. The asymmetric NDHPEA and TNDHPEA molecules were synthesized through the nucleophilic addition of a hexylphenylethnyl group, followed by a reduction reaction and a Suzuki coupling reaction. The thermal, photophysical, electrichemical properties have been investigated by thermal gravimetric analysis(TGA), differential scanning calorimetry (DSC), UV–visible absorption, and CV. |
