This study presents the first integration of wavelet denoising with resonator-enhanced microwave spectroscopy to explore the formation and characteristics of gas-phase heterogeneous vinylene carbonate-(CO₂)_1–5 clusters. Through this innovative approach, faint spectral lines were detected with efficiency, enhancing our understanding of complex interaction patterns that govern the growth and stability of these molecular clusters. It was found that CO₂ aggregates preferentially around the vinylene carbonate molecule through C···O tetrel bonds at the carbonyl and ether groups, altering the typical self-aggregation topology of free CO₂ clusters. This leads to more symmetrical growth around the vinylene carbonate monomer. Our findings provide insights into the solvation mechanisms of compounds in supercritical CO₂ thereby advancing the understanding of subnanoscale CO₂ aggregation patterns.

中文翻译：

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通过小波增强微波光谱破译碳酸乙烯酯在塑造 CO2 团簇生长和稳定性中的作用


本研究首次将小波去噪与谐振器增强微波光谱相结合，以探索气相非均相碳酸乙烯酯-（CO₂）_1-5 团簇的形成和特征。通过这种创新方法，可以高效地检测到微弱的光谱线，从而增强了我们对控制这些分子簇生长和稳定性的复杂相互作用模式的理解。研究发现，_CO2 优先通过 C···O 四烯酰基在羰基和醚基团上键合，改变了游离 CO₂ 团簇的典型自聚集拓扑结构。这导致碳酸乙烯酯单体周围更对称的生长。我们的研究结果为超临界 CO₂ 中化合物的溶剂化机制提供了见解，从而促进了对亚纳米级 CO₂ 聚集模式的理解。