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首页> 外文期刊>Synthetic Metals >Luminescence intensity enhancement induced by laser irradiation in poly(vinyl alcohol) and poly(3-thiopheneacetic acid) blend
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Luminescence intensity enhancement induced by laser irradiation in poly(vinyl alcohol) and poly(3-thiopheneacetic acid) blend

机译:聚乙烯醇和聚3-噻吩乙酸共混物中激光辐照引起的发光强度增强

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摘要

Photoluminescence (PL) of polymeric blends with poly(vinyl alcohol) (PVA) and poly(3-thiopheneacetic acid) (PTAA) was investigated. We found an increase in the PL intensity induced by laser irradiation. The PL quantum efficiency was dependent on irradiation time, laser intensity, and PTAA doping state (acid or salt). PL intensity increased up to 200 percent for acid PTAA and 50 percent for salt PTAA. The PL efficiency relative enhancement was 314 percent for acid PTAA and 140 percent for salt PTAA. Using infrared spectroscopy, we related this effect to hydrogen bond interaction between PTAA and PVA excited states induced by laser irradiation that reduced the non-radiative decay rate.
机译:研究了与聚乙烯醇(PVA)和聚(3-噻吩乙酸)(PTAA)的聚合物共混物的光致发光(PL)。我们发现由激光照射引起的PL强度增加。 PL量子效率取决于照射时间,激光强度和PTAA掺杂状态(酸或盐)。酸性PTAA的PL强度增加到200%,而盐PTAA的PL强度增加到50%。酸P​​TAA的PL效率相对提高为314%,盐PTAA的PL效率相对提高为140%。使用红外光谱,我们将此效应与激光辐照诱导的PTAA和PVA激发态之间的氢键相互作用降低了非辐射衰减率。

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