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首页> 外文期刊>Current Chinese Science. >Is it Photodegradation or other Electronic Mechanisms Responsible for Photoluminescence Quenching under Nonenvironmental Conditions in Poly(3-octyltiophene) Electrochemically Synthesised?
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Is it Photodegradation or other Electronic Mechanisms Responsible for Photoluminescence Quenching under Nonenvironmental Conditions in Poly(3-octyltiophene) Electrochemically Synthesised?

机译：是光降解还是其他电子机制导致聚（3-辛基噻吩）电化学合成在非环境条件下的光致发光猝灭？

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Aims: This work investigates the photoluminescence properties of poly(3-octylthiophene), namely P3OT films, under excitation power and time light expositions. When exposed to monochromatic illumination, the degradation mechanism of P3OT films is precise in environmental conditions. However, in some environmental controlled or non-environmental conditions, the quenching luminescence of P3OT subject to monochromatic light excitation is not fully understood. In this context, it is necessary to understand what causes quenching luminescence of P3OT films under environmental conditions. Methods: The P3OT was synthesized by chronocoulometry, using tetraethylammonium tetrafluoroborate and lithium perchlorate as supporting electrolytes, and after it is deposited on a conductive substrate of fluoride-doped tin oxide (FTO). The films were synthesized and maintained under an argon atmosphere, and their thickness is dependent on the charge. The characterisation was achieved by applying techniques like UV-Vis absorption spectroscopy, photoluminescence, and emission ellipsometry. Results: The UV-Vis absorption measurements demonstrated a different interaction of poly-mer/dopant due to the polaronic band. The results showed that photoluminescence quenching with time is a behaviour caused by energy transfer between quinone chains and pristine chains of the P3OT. The polarised emission measurements corroborate the hypothesis of energy transfer between chains. The emission ellipsometry technique was used to understand energy transfer processes and other properties. The self-absorption phenomenon and integrated PL investigation of the P3OT emission elucidated the mechanism involved in the observed properties. Conclusion: Besides that, the results show that photoluminescence quenching happens in nonenvironmental and environmental conditions, corroborating the hypothesis that PL quenching occurs because self-absorption phenomena influence the energy transfer mechanism.
机译：目的:这项工作调查光致发光保利(3-octylthiophene)的性质,即P3OT电影,在激发光功率和时间博览会。照明,P3OT的降解机制电影中精确的环境条件。然而,在一些环境或控制发展无公害条件,淬火发光的P3OT单色光激发并不是完全理解。背景下,有必要了解导致猝灭发光P3OT电影环境条件。合成了chronocoulometry,使用四乙铵tetrafluoroborate和锂高氯酸盐作为支持电解质,之后它是沉积在导电衬底fluoride-doped氧化锡(FTO)。合成和维护下氩气氛,和他们的厚度取决于这一指控。应用紫外可见吸收技术光致发光光谱,发射椭圆光度法。测量了不同的相互作用poly-mer /掺杂剂由于polaronic乐队。结果表明,光致发光猝灭随着时间是一个行为引起的能量醌链和原始之间的转移P3OT的连锁店。测量证实假说的能量链之间的转移。椭圆对称技术被用来理解能量转移过程和其他属性。自吸收现象和集成PL调查P3OT发射阐明的机制参与观察到的属性。结论:除此之外,结果表明光致发光猝灭发生在nonenvironmental和环境条件,确凿的PL淬火的假设是因为自吸收现象影响能量传递机制。

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