Bunkin Nikolai F, Bolotskova Polina N, Bondarchuk Elena V, Gryaznov Valery G, Kozlov Valeriy A, Okuneva Maria A, Ovchinnikov Oleg V, Smoliy Oleg P, Turkanov Igor F, Galkina Catherine A, Dmitriev Alexandr S, Seliverstov Alexandr F
Department of Fundamental Sciences, Bauman Moscow State Technical University, 2nd Baumanskaya Str. 5, 105005 Moscow, Russia.
Prokhorov General Physics Institute, Russian Academy of Sciences, Vavilova Str. 38, 119991 Moscow, Russia.
Polymers (Basel). 2022 Feb 11;14(4):688. doi: 10.3390/polym14040688.
Photoluminescence from the surface of a Nafion polymer membrane upon swelling in isotonic aqueous solutions and Milli-Q water has been studied. Liquid samples were preliminarily processed by electric pulses with a duration of 1 μs and an amplitude of 0.1 V using an antenna in the form of a flat capacitor; experiments on photoluminescent spectroscopy were carried out 20 min after this treatment. A typical dependence of the luminescence intensity, , on the swelling time, , obeys an exponentially decaying function. The characteristic decay time of these functions and the stationary level of luminescence intensity depend on the repetition rate of electrical pulses, and the obtained dependences are well reproduced. It transpired that, at certain pulse repetition rates, the dependence, (), is a random function, and there is no reproducibility. Stochastic effects are associated with a random external force of an electromagnetic nature that acts on a polymer membrane during swelling. The source of this random force, in our opinion, is low-frequency pulsations of neutron stars or white dwarfs.
研究了Nafion聚合物膜在等渗水溶液和超纯水（Milli-Q水）中溶胀时表面的光致发光现象。使用平板电容器形式的天线，对液体样品施加持续时间为1 μs、幅度为0.1 V的电脉冲进行预处理；在此处理20分钟后进行光致发光光谱实验。发光强度 对溶胀时间 的典型依赖关系服从指数衰减函数。这些函数的特征衰减时间和发光强度的稳定水平取决于电脉冲的重复率，并且所得到的依赖关系能够很好地重现。结果发现，在某些脉冲重复率下，依赖关系 （ ）是一个随机函数，并且无法重现。随机效应与溶胀过程中作用于聚合物膜的电磁性质的随机外力有关。我们认为，这种随机力的来源是中子星或白矮星的低频脉动。
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