Khabibullin Vladislav R, Mikheev Ivan V, Proskurnin Mikhail A
Analytical Chemistry Division, Chemistry Department, M.V. Lomonosov Moscow State University, d. 1, Str. 3, Lenin Hills, GSP-1 V-234, Moscow 119991, Russia.
Federal State Budgetary Institution of Science Institute of African Studies, Russian Academy of Sciences, St. Spiridonovka, 30/1, Moscow 123001, Russia.
Nanomaterials (Basel). 2024 Oct 1;14(19):1586. doi: 10.3390/nano14191586.
Thermal lens spectrometry is a high-sensitivity method for measuring the optical and thermal parameters of samples of different nature. To obtain both thermal diffusivity and absorbance-based signal measurements with high accuracy and precision, it is necessary to pay attention to the factors that influence the trueness of photothermal measurements. In this study, the features of liquid objects are studied, and the influence of optical and thermal effects accompanying photothermal phenomena are investigated. Thermal lens analysis of dispersed solutions and systems with photoinduced activity is associated with a large number of side effects, the impact of which on trueness is not always possible to determine. It is necessary to take into account the physicochemical properties and optical and morphological features of the nanophase and components exhibiting photoinduced activity. The results obtained make it possible to reduce systematic and random errors in determining the thermal-diffusivity-based and absorbance-based photothermal signals for liquid objects, and also contribute to a deeper understanding of the physicochemical processes in the sample.
热透镜光谱法是一种用于测量不同性质样品的光学和热学参数的高灵敏度方法。为了高精度和高精准度地获得热扩散率和基于吸光度的信号测量结果，有必要关注影响光热测量准确性的因素。在本研究中，对液体对象的特性进行了研究，并考察了伴随光热现象的光学和热学效应的影响。对具有光致活性的分散溶液和体系进行热透镜分析会伴随着大量的副作用，其对准确性的影响并非总是能够确定。有必要考虑纳米相以及表现出光致活性的组分的物理化学性质、光学和形态特征。所获得的结果能够减少在确定液体对象基于热扩散率和基于吸光度的光热信号时的系统误差和随机误差，还有助于更深入地理解样品中的物理化学过程。
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