Six new heteroleptic Ru(II) complexes (MC118, MC120–123 and MC126), of general formula Ru(L1)(L2)(NCS)2, where L1 and L2 are respectively dicarboxylated and π-conjugated functionalized (dissymmetric) bipyridine ligands, were designed, synthesized and applied as sensitizers in dye-sensitizedsolarcells. These complexes were characterized both experimentally and theoretically, showing promising optical
六个新杂的Ru(II)络合物(MC118,MC120-123和MC126),通式的钌(L1)(L2)(NCS)2,其中L1和L2分别二羧基化和π共轭官能(不对称)联吡啶配位体被设计,合成并用作染料敏化太阳能电池中的敏化剂。这些配合物在实验和理论上都进行了表征,与典型的N719染料相比,显示出令人鼓舞的光学特性,具有更高的消光系数。当与液体Ⅰ工作装置,组合使用- / I 3 - 氧化还原电解质,研究过的敏化剂的功率转换效率在6.0%至8.0%之间,与在相似的制造和评估条件下测试的参比N719染料相当。
Modulating absorption and charge transfer in bodipy-carbazole donor–acceptor dyads through molecular design
作者:John Strahan、Bhooshan C. Popere、Piyachai Khomein、Craig A. Pointer、Shea M. Martin、Amanda N. Oldacre、S. Thayumanavan、Elizabeth R. Young
DOI:10.1039/c9dt00094a
日期:——
4-difluoro-4-bora-3a,4a-diaza-s-indacene) donor–acceptor dyads were designed and synthesized, and their ground-state and photophysicalproperties were systematically characterized. The electronic coupling between the BDP chromophore and an electron-donating carbazole (Carb) moiety was tuned by attachment via the meso and the beta positions on the BDP core, and through the use of various chemical linkers (phenyl
Three new tris-heteroleptic complexes of ruthenium(II) were designed by coordinating the metal center with cyclometalating, anchoring, and auxiliaryligands with different donor substituents. N-Hexylcarbazole, N-hexylphenothiazine, and N-hexyldiphenylamine donor moieties were used as substituents on the auxiliaryligands for SA633, SA634, and SA635, respectively. Complexes were characterized by 1H and
Twisted donor substituted simple thiophene dyes retard the dye aggregation and charge recombination in dye-sensitized solar cells
作者:Telugu Bhim Raju、Jayraj V. Vaghasiya、Mohammad Adil Afroz、Saurabh S. Soni、Parameswar Krishnan Iyer
DOI:10.1016/j.orgel.2017.07.019
日期:2017.11
density functional theory and TRPL studies were used to estimate the photovoltaic properties of the dyes. The dye having two acceptors on both sides (2,5-position) of thiophene moiety showed efficient electron extraction from the electrondonor part. Without using any additives, Cz-Th dye and NPh3-Th dye in presence of cobalt (II/III) redox shuttle, resulted in the power conversion efficiency (η, PCE) of
精心设计并合成了两种新颖的在2,5位骨架光敏剂上带有双受体的噻吩3,4-二取代有机染料,用于染料敏化太阳能电池(DSSC)应用。在这篇论文中,研究了噻吩(3,4-位)上咔唑(Cz)和三苯胺(NPh3)单元取代的影响。两个咔唑染料和三苯胺类染料的三维结构体的平面结构被发现有效地抑制的I - / I 3 -和Co 2 / Co的3在TiO电解质2表面。结果表明,改变染料的供体位置对于DSSC应用也有效,即使由于受体阻滞了2,5-位电子的离域作用,即使在可见光区域(对于两种染料)都没有加宽吸收峰也是如此。单位。在Cz-Th-Dye,NPh3-Th-Dye中的3,4-位置有两个扭曲的供体,染料的聚集和电荷重组受到阻碍。光学,电化学,密度泛函理论和TRPL研究被用来估计染料的光电性能。在噻吩部分的两侧(2,5-位)具有两个受体的染料显示出从电子给体部分有效的电子提取。在不使用任何添加剂的情况下,在钴(II