染料敏化太陽能電池(dye-sensitized solar cells, DSCs)具低製造成本與高效率的室內弱光發電特性。本實驗室先前合成出含cycloruthenated sensitizers (DUY24−DUY27)，並透過β-lowest unoccupied spin orbital (β-LUSO)分佈證明β-LUSO分佈在軟的硫原子，可以提高碘電解質與氧化態染料的作用能力，加快染料再生速率提高元件的光電轉換效率。本研究參考高光電轉換效率染料C101、C106及CYC-B20，將一個輔助配位基的bipyridine改為bithiazole，而β-LUSO分佈在thiazole之3號位置的硫原子，可以提高染料再生的速度，並且在thiazole接上2-(hexyl)thiophene、2 -(hexylthio) thiophene和5-(hexylthio)-ethylenedioxythiophene來增長輔助配位基的共軛長度，以增強染料在MLCT band的吸光強度，CYK系列染料的DMF溶液呈現深棕綠色，含bithiazole的CYK系列染料相對於含bipyridine的染料之MLCT最大吸收波長呈現紅位移(CYK17 : 560 nm, 紅移 7 nm；CYK18 : 597 nm, 紅移35 nm ; CYK19 : 580 nm, 紅移13 nm)，有利染料吸收太陽光。;Dye-sensitized solar cells(DSCs) have low cost and high efficiency under dim-light condition. The laboratory previously synthesized cycloruthenated sensitizers (DUY24−DUY27) and proved that β-lowest unoccupied spin orbital distributes on the soft sulfur atom, which strengthens the interaction between the oxidized dye and iodide ion for efficient dye regeneration. The study refers to high efficiency dye C101、C106 and CYC-B20. We replaced the bipyridine of ancillary ligand with bithiazole, then use three cojugated moiety (2-(hexyl)thiophene、2 -(hexylthio) thiophene and 5-(hexylthio)-ethylenedioxythiophene) to attach on bithiazole. Increasing the conjugate length of the ancillary ligand to enhance the absorbance of the MLCT band. The color of CYK dye in DMF solution are brown green. The series of CYK dyes containing bithiazole exhibit red shift with respect to the dyes containing bipyridine. (CYK17 : 560 nm, red shift : 7 nm；CYK18 : 597 nm, red shift : 35 nm ; CYK19 : 580 nm, red shift : 13 nm).
