通过添加TiO纳米颗粒改善白色发光三元共轭聚合物共混薄膜的光物理性质

Improving Photophysical Properties of White Emitting Ternary Conjugated Polymer Blend Thin Film via Additions of TiO Nanoparticles.

作者信息

Al-Bati Sameer, Hj Jumali Mohammad Hafizuddin, Al-Asbahi Bandar Ali, Ibtehaj Khatatbeh, Yap Chi Chin, Qaid Saif M H, Ghaithan Hamid M, Farooq W A

机构信息

Department of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, UKM Bangi 43600, Selangor, Malaysia.

Department of Physics and Astronomy, College of Science, King Saud University, Riyadh 11451, Saudi Arabia.

出版信息

Polymers (Basel). 2020 Sep 21;12(9):2154. doi: 10.3390/polym12092154.

DOI:10.3390/polym12092154

PMID:32967360

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7570283/

Abstract

The effect of TiO nanoparticles on the photophysical properties of ternary conjugated polymer (CP) blends of poly(9,9-dioctylfluorene-2,7-diyl) (PFO), poly 9,9-dioctylfluorene-alt-benzothiadiazole (F8BT) and poly(2-methoxy-5(2-ethylhexyl)-1,4 -phenylenevinylene (MEH-PPV) thin films was investigated. This ternary blend used a fixed amount of PFO as the donor with MEH-PPV and F8BT in various ratios as the acceptors. The solution-blending method and the spin-coating technique were used to prepare the blends and the thin films, respectively. Through efficient Förster Resonance Energy Transfer (FRET), the desired white emission was achieved with PFO/0.3 wt.% F8BT/0.5 wt.% MEH-PPV ternary blend thin film. Additions of nanoparticles up to 10 wt.% dramatically intensified the white emission which then dimmed at higher contents due to agglomerations. The current density-voltage characteristics of the nanocomposite thin films exhibited dependency on the content and distributions of the nanoparticles. Finally, a possible underlying mechanism for the intensification of emission is proposed.

摘要

研究了二氧化钛纳米颗粒对聚（9,9-二辛基芴-2,7-二亚基）（PFO）、聚9,9-二辛基芴-alt-苯并噻二唑（F8BT）和聚（2-甲氧基-5（2-乙基己基）-1,4-亚苯基亚乙烯基）（MEH-PPV）三元共轭聚合物（CP）共混物薄膜光物理性质的影响。这种三元共混物使用固定量的PFO作为供体，MEH-PPV和F8BT以不同比例作为受体。分别采用溶液共混法和旋涂技术制备共混物和薄膜。通过高效的Förster共振能量转移（FRET），PFO/0.3 wt.% F8BT/0.5 wt.% MEH-PPV三元共混物薄膜实现了所需的白色发射。添加高达10 wt.%的纳米颗粒显著增强了白色发射，然后在较高含量时由于团聚而变暗。纳米复合薄膜的电流密度-电压特性表现出对纳米颗粒含量和分布的依赖性。最后，提出了发射增强的一种可能潜在机制。