本論文主要探討不同輔助配位基之光學特性對非對稱型釕錯合物染料的光學性質之影響，希望以精確的輔助配位基設計來合成高效率釕錯合物染料。我們藉由分析本實驗室所合成出的釕錯合物染料和輔助配位基之光學性質的比較，以及染料組裝成電池元件時的光電效能，設計及合成出兩個含新結構輔助配位基Ligand-B16，Ligand-B17的非對稱型釕金屬錯合物染料SJW-B16，SJW-B17。Ligand-B16的結構是雙吡啶上接上vinylthiophene來延長其共軛長度，末端接上咔唑當推電子基。Ligand-B17的結構是雙吡啶上接上雙噻吩環來延長其共軛長度，末端接上三個碳及咔唑來微調末端推拉電子的能力。兩個配位基再分別使用”一步”合成法製備成非對稱型染料。Ligand-B16 Ligand-B17的最大吸收波長為380 nm和375 nm，SJW-B16，SJW-B17的最大吸收波長與吸收係數各別為536 nm、21000 M-1cm-1 和552 nm、22000 M-1cm-1。最後以SJW-B16及SJW-B17當光敏化劑組裝成染料敏化太陽能電池元件，在AM 1.5光源照射下，光電轉換效率分別為5.3 %，4.9 %（相較於N719電池的5.4 %） The objective of this thesis is to prepare high efficiency ruthenium based dyes via proper design of the ancillary ligands. The ancillary ligand was designed by carefully studying the effect of the optical properties of the ancillary ligands on the light harvesting properties and therefore the resulting photovoltaic performance of the corresponding ruthenium complexes prepared in our laboratory. We design and synthesize two novel ancillary ligands, Ligand-B16 and Ligand-B17 based on the previous data. The corresponding complexes SJW-B16 and SJW-B17 were then synthesized with a typical “one-pot” process. The structure of Ligand-B16 composed of a vinylthiophene substituted bipyridine and a t-butyl-carbazole terminal group. The structure of Ligand-B17 is formed by a bipyridine substituted with a bithiophene which connected with a propylene chain and a t-butyl-carbazole at the terminal. Ligand-B16 and Ligand-B17 have the λmax of 380 nm and 375 nm, respectively. The λmax, absorption coefficient of SJW-E16 and SJW-E17 are 536 nm, 21000 M-1cm-1and 552 nm, 22000 M-1cm-1, respectively. The conversion efficiencies of the dye sensitized solar cells based on SJW-B16 and SJW-B17 dyes are 5.3 % and 4.9 %, respectively under the AM 1.5 simulated sunlight (100 mWcm-2) illumination. The efficiency for N719 dye is 5.4 % under the same cell fabrication and photovoltaic performance measuring conditions.
