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Controlled synthesis of multi-armed P3HT star polymers with gold nanoparticle core

机译：用金纳米颗粒芯对多臂P3HT星聚合物的控制合成

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摘要

Well-defined multi-armed P3HT star polymers with a gold nanoparticle (NP) core were synthesized by an arm-first method based on a ligand exchange reaction between linear end-functionalized P3HT (P3HT-SH) and gold NPs. A high loading amount of gold NPs to P3HT-SH with a relatively lower molecular weight gave a higher yield of star polymers (similar to 70%) with a high molecular weight (M-w = 2867k, PDI = 2.1), and the number of P3HT arm chains on one gold NP was 119. The P3HT star polymer with a gold NP core was well-dispersed both in solution and in solid, which was interestingly not crystalline because of the unique 3-dimenstional structure. In addition, surface plasmon resonance (SPR) absorption from the gold NP, as the core of the star polymer, was more enhanced both in solution and in solid, in comparison to those with non end-functionalized P3HT arm chains (P3HT-allyl); however, PL emission was more diminished because of the molecularly contacted P3HT arm chain and gold NP core. This was then introduced in an active layer consisting of P3HT:PCBM in an organic solar cell to increase optical absorption by the SPR effect from the gold NP, however, the device efficiency was rather decreased compared to that of the reference device without gold NPs, which was probably due to direct electron transfer between the gold NP and P3HT.
机译：通过基于线性末端官能化P3HT（P3HT-SH）和金NPS之间的配体交换反应，通过臂 - 第一法合成具有金纳米颗粒（NP）核的明确定义的多臂P3HT星聚合物。具有相对较低的分子量的高负荷量的金NPS至P3HT-SH，得到更高的星形聚合物（类似于70％），具有高分子量（MW = 2867K，PDI = 2.1），以及P3HT的数量手臂上的一个金NP是119具有金NP芯的P3HT星形聚合物，以及分散在溶液中和在固体，这是有趣的是不具有结晶性，因为独特的3 dimenstional结构的链。另外，与具有非末端官能化的P3HT ARM链（P3HT-烯丙基）的那些相比，从金NP的表面等离子体共振（SPR）吸收从金NP的吸收，作为星形聚合物的核心，并以固体更高;然而，由于分子接触的P3HT臂链和金NP核心，PL发射更加减少。然后将其引入一个由P3HT：PCBM在有机太阳能电池中组成的有源层，以通过来自Gold NP的SPR效应增加光学吸收，然而，与没有金NPS的参考装置相比，器件效率相当降低，这可能是由于金NP和P3HT之间的直接电子转移。

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  • 来源
    《RSC Advances》 |2016年第54期|共8页
  • 作者

    Kim Hyun-Ji; Cho Kie Yong; Hwang Seung Sang; Choi Dong Hoon; Ko Min Jae; Baek Kyung-Youl;

  • 作者单位

    Korea Inst Sci &

    Technol Mat Architecturing Res Ctr Seoul 02792 South Korea;

    Korea Inst Sci &

    Technol Mat Architecturing Res Ctr Seoul 02792 South Korea;

    Korea Inst Sci &

    Technol Mat Architecturing Res Ctr Seoul 02792 South Korea;

    Korea Univ Dept Chem Seoul 02841 South Korea;

    Korea Inst Sci &

    Technol Photoelect Hybrids Res Ctr Seoul 02792 South Korea;

    Korea Inst Sci &

    Technol Mat Architecturing Res Ctr Seoul 02792 South Korea;

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  • 正文语种 eng
  • 中图分类 化学;
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