Charge Transfer Hybrids of Graphene Oxide and the Intrinsically Microporous Polymer PIM-1.
Charge Transfer Hybrids of Graphene Oxide and the Intrinsically Microporous Polymer PIM-1.
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DOI：
10.1021/acsami.9b09832
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发表时间：
2019-08
影响因子：
9.5
通讯作者：
Yuanyang Rong;M. Large;M. Tripathi;S. Ogilvie;Aline Amorim Graf;Boyang Mao;J. Tunesi;Jonathan P. Salvage;A. King;A. Pasquazi;M. Peccianti;R. Malpass‐Evans;N. McKeown;F. Marken;A. Dalton
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文献类型：
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作者：
Yuanyang Rong;M. Large;M. Tripathi;S. Ogilvie;Aline Amorim Graf;Boyang Mao;J. Tunesi;Jonathan P. Salvage;A. King;A. Pasquazi;M. Peccianti;R. Malpass‐Evans;N. McKeown;F. Marken;A. Dalton
基于固有微孔聚合物PIM-1和氧化石墨烯（GO）的纳米颗粒的纳米杂化材料用再沉淀法从水性分散体制备，导致GO片的表面用PIM-1的纳米颗粒装饰。GO/PIM-1纳米杂化物的荧光信号的显著蓝移表明在GO存在下PIM-1的光电性质由于它们的强相互作用而发生改变。GO的拉曼G峰的硬化（几乎6 cm^{-1}）进一步表明在PIM存在下GO的p掺杂。开尔文探针力显微镜（KPFM）和电化学还原测量的纳米杂化物提供了直接的证据，PIM-1纳米粒子和GO纳米片之间的电荷转移。这些观察结果将是重要的GO-PIM-1纳米杂化材料作为催化和传感的基板和促进剂的未来应用。
Nanohybrid materials based on nanoparticles of the intrinsically microporous polymer PIM-1 and graphene oxide (GO) are prepared from aqueous dispersions with a re-precipitation method, resulting in the surface of the GO sheets being decorated with nanoparticles of PIM-1. The significant blueshift in fluorescence signals for the GO/PIM-1 nanohybrids indicates modification of the optoelectronic properties of the PIM-1 in the presence of the GO due to their strong interactions. The stiffening in the Raman G peak of GO (by nearly 6 cm^{-1}) further indicates p-doping of the GO in the presence of PIM. Kelvin probe force microscopy (KPFM) and electrochemical reduction measurements of the nanohybrids provide direct evidence for charge transfer between the PIM-1 nanoparticles and the GO nanosheets. These observations will be of importance for future applications of GO-PIM-1 nanohybrids as substrates and promoters in catalysis and sensing.