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首页> 外文期刊>Advanced energy materials >A Supramolecular “Double-Cable” Structure with a 12944 Helix in a Columnar Porphyrin-C60 Dyad and its Application in Polymer Solar Cells
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A Supramolecular “Double-Cable” Structure with a 12944 Helix in a Columnar Porphyrin-C60 Dyad and its Application in Polymer Solar Cells

机译：柱状卟啉-C60染料中具有12944螺旋的超分子“双电缆”结构及其在聚合物太阳能电池中的应用

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摘要

A novel porphyrin-C60 dyad (PCD1) is designed and synthesized to investigate and manipulate the supramolecular structure where geometrically isotropic [such as [60]fullerene (C60)] and anisotropic [such as porphyrin (Por)] units coexist. It is observed that PCD1 possesses an enantiomeric phase behavior. The melting temperature of the stable PCD1 thermotropic phase is 160 °C with a latent heat (ΔH) of 18.5 kJ mol−1. The phase formation is majorly driven by the cooperative intermolecular Por–Por and C60–C60 interactions. Structural analysis reveals that this stable phase possesses a supramolecular “double-cable” structure with one p-type Por core columnar channel and three helical n-type C60 peripheral channels. These “double-cable” columns further pack into a hexagonal lattice with a = b = 4.65 nm, c = 41.3 nm, = β = 90°, and = 120°. The column repeat unit is determined to possess a 12944 helix. With both donor (D; Pro) and acceptor (A; C60) units having their own connecting channels as well as the large D/A interface within the supramolecular “double-cable” structure, PCD1 has photogenerated carriers with longer lifetimes compared to the conventional electron acceptor [6,6]-phenyl-C61-butyric acid methyl ester. A phase-separated columnar morphology is observed in a bulk-heterojunction (BHJ) material made by the physical blend of a low band-gap conjugated polymer, [poly[2,6-(4,4-bis-(2-ethylhexyl)-4H-cyclopenta [2,1-b;3,4-b′]-dithiophene)-alt-4,7-(2,1,3-benzothia-diazole)] (PCPDTBT), and PCD1. With a specific phase structure in the solid state and in the blend, PCD1 is shown to be a promising candidate as a new electron acceptor in high performance BHJ polymer solar cells.
机译：设计并合成了一种新型的卟啉-C60二元体（PCD1），以研究和操纵几何各向同性[例如[60]富勒烯（C60）]和各向异性[例如卟啉（Por）]单元共存的超分子结构。观察到PCD1具有对映体相行为。稳定的PCD1热致变相的熔化温度为160°C，潜热（ΔH）为18.5 kJ mol-1。相的形成主要是由分子间的Por-Por和C60-C60相互作用共同驱动的。结构分析表明，该稳定相具有超分子“双电缆”结构，具有一个p型Por芯柱状通道和三个螺旋n型C60外围通道。这些“双电缆”柱进一步填充为a = b = 4.65 nm，c = 41.3 nm，=β= 90°和= 120°的六边形格子。确定该列重复单元具有12944螺旋。由于供体（D; Pro）和受体（A; C60）单元都具有自己的连接通道，并且在超分子“双电缆”结构中具有大的D / A界面，因此PCD1的光生载流子的寿命比PCD1长。常规的电子受体[6，6]-苯基-C61-丁酸甲酯。在通过低带隙共轭聚合物[聚[2,6-（4,4-双-（2-乙基己基）]的物理共混物制成的体-异质结（BHJ）材料中观察到相分离的柱状形态-4H-环戊[2,1-b; 3,4-b']-二噻吩）-alt-4,7-（2,1,3-苯并噻二唑）]（PCPDTBT）和PCD1。具有固态和共混物的特定相结构，PCD1被证明是高性能BHJ聚合物太阳能电池中新的电子受体的有希望的候选者。

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  • 来源
    《Advanced energy materials》 |2012年第11期|1-8|共8页
  • 作者

    Chien-Lung Wang; Wen-Bin Zhang; Hao-Jan Sun; Ryan M. Van Horn; Rahul R. Kulkarni; Chi-Chun Tsai; Chain-Shu Hsu; Bernard Lotz; Xiong Gong; Stephen Z. D. Cheng;

  • 作者单位

    College of Polymer Science and Polymer Engineering The University of Akron Akron Ohio 44325 USA;

    Department of Applied Chemistry National Chiao Tung University Hsinchu Taiwan 30010 ROC;

    College of Polymer Science and Polymer Engineering The University of Akron Akron Ohio 44325 USA;

    College of Polymer Science and Polymer Engineering The University of Akron Akron Ohio 44325 USA;

    College of Polymer Science and Polymer Engineering The University of Akron Akron Ohio 44325 USA;

    College of Polymer Science and Polymer Engineering The University of Akron Akron Ohio 44325 USA;

    College of Polymer Science and Polymer Engineering The University of Akron Akron Ohio 44325 USA;

    Department of Applied Chemistry National Chiao Tung University Hsinchu Taiwan 30010 ROC;

    Institut Charles Sadron 23 Rue du Loess Strasbourg 67034 France;

    College of Polymer Science and Polymer Engineering The University of Akron Akron Ohio 44325 USA;

    College of Polymer Science and Polymer Engineering The University of Akron Akron Ohio 44325 USA;

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  • 正文语种 eng
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  • 关键词

    fullerenes; hierarchical structures; self-assembly; solar cells; supramolecular materials;

    机译：富勒烯;层级结构;自组装;太阳能电池;超分子材料;

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