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通过基于Förster共振能量转移的系统掺杂策略控制二元发光聚合物杂化物的发射光谱以实现白色发光

Controlling the Emission Spectrum of Binary Emitting Polymer Hybrids by a Systematic Doping Strategy via Förster Resonance Energy Transfer for White Emission.

作者信息

Al-Asbahi Bandar Ali, AlSalhi Mohamad S, Fatehmulla Amanullah, Jumali Mohammad Hafizuddin Hj, Qaid Saif M H, Mujamammi Wafa Musa, Ghaithan Hamid M

机构信息

Department of Physics & Astronomy, College of Sciences, King Saud University, Riyadh 11451, Saudi Arabia.

Department of Physics, Faculty of Science, Sana'a University, Sanaa 12544, Yemen.

出版信息

Micromachines (Basel). 2021 Nov 8;12(11):1371. doi: 10.3390/mi12111371.

DOI:10.3390/mi12111371
PMID:34832783
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8626035/
Abstract

Tuning the emission spectrum of both binary hybrids of poly (9,9'-di-n-octylfluorenyl-2,7-diyl) (PFO) with each poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) and poly[2-methoxy-5-(3,7-dimethyl-octyloxy)-1,4-phenylenevinylene] end-capped with Dimethyl phenyl (MDMO-PPV-DMP) by a systematic doping strategy was achieved. Both binary hybrid thin films of PFO/MEH-PPV and PFO/MDMO-PPV-DMP with various weight ratios were prepared via solution blending method prior to spin coating onto the glass substrates. The conjugation length of the PFO was tuned upon addition of acceptors (MEH-PPV or MDMO-PPV-DMP), as proved from shifting the emission and absorption peaks of the binary hybrids toward the acceptor in addition to enhancing the acceptor emission and reducing the absorbance of the PFO. Förster resonance energy transfer (FRET) is more efficient in the binary hybrid of PFO/MDMO-PPV-DMP than in the PFO/MEH-PPV. The efficient FRET in both hybrid thin films played the major role for controlling their emission and producing white emission from optimum ratio of both binary hybrids. Moreover, the tuning of the emission color can be attributed to the cascade of energy transfer from PFO to MEH-PPV, and then to MDMO-PPV-DMP.

摘要

通过系统的掺杂策略实现了对聚（9,9'-二正辛基芴-2,7-二亚基）（PFO）与聚[2-甲氧基-5-（2-乙基己氧基）-1,4-苯撑乙烯撑]（MEH-PPV）以及用二甲基苯基封端的聚[2-甲氧基-5-（3,7-二甲基辛氧基）-1,4-苯撑乙烯撑]（MDMO-PPV-DMP）的二元杂化物发射光谱的调控。在旋涂到玻璃基板上之前，通过溶液共混法制备了具有各种重量比的PFO/MEH-PPV和PFO/MDMO-PPV-DMP二元杂化薄膜。添加受体（MEH-PPV或MDMO-PPV-DMP）后，PFO的共轭长度得到了调控，这可从二元杂化物的发射峰和吸收峰向受体方向移动得到证明，此外还增强了受体发射并降低了PFO的吸光度。福斯特共振能量转移（FRET）在PFO/MDMO-PPV-DMP二元杂化物中比在PFO/MEH-PPV中更有效。两种杂化薄膜中的高效FRET在控制其发射以及从两种二元杂化物的最佳比例产生白色发射方面起了主要作用。此外，发射颜色的调控可归因于从PFO到MEH-PPV，再到MDMO-PPV-DMP的能量转移级联。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/05a6/8626035/fffe3490c3fd/micromachines-12-01371-g015.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/05a6/8626035/0414daf6cdd8/micromachines-12-01371-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/05a6/8626035/fb78fc16fe7f/micromachines-12-01371-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/05a6/8626035/b6ac740d020d/micromachines-12-01371-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/05a6/8626035/0db69d94981f/micromachines-12-01371-g012.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/05a6/8626035/ef930e030dec/micromachines-12-01371-g014.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/05a6/8626035/fffe3490c3fd/micromachines-12-01371-g015.jpg

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