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普通的 FTIR 搜尋不支持對此樣品進行明確的化合物級別鑑定。雖然最近的譜庫名稱是 1-甲基吡咯烷-2-酮,但所有列出的譜庫相似度均為零,且更廣泛的 Top-15 模式與單一良好匹配的分子不一致。觀測到的光譜更宜視為指示一種含矽和氧的環狀材料,主要依據是在 1067、1119 和 1253 cm-1 的強指紋區吸收,以及 688 和 725 cm-1 的低波數譜帶。然而,在 1727 和 1735 cm-1 的清晰羰基區譜帶無法僅通過該方向很好地解釋,因此結果應保持為一個寬泛的材料歸類而非實體聲明。
建議的下一步: Verify the carbonyl assignment by rechecking the 1800-1650 cm-1 region at higher signal quality to determine whether the 1727 and 1735 cm-1 features are both real and distinct. Inspect the 1200-1000 cm-1 region in more detail, as relative intensity and band shape there can help distinguish Si-O-Si-rich materials from ordinary C-O-containing organics. If available, run complementary GC-MS or LC-MS for low-molecular-weight components, since the spectrum may include a carbonyl-bearing contaminant or mixture component. Acquire a repeat FTIR spectrum from a fresh preparation or a cleaned substrate/background subtraction to confirm whether the silicon-oxygen fingerprint and the carbonyl bands arise from the same material.
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FTIR.fun
The above shows the FTIR analysis results of a png file uploaded by a user (IP: 190.XX.XX.149 ). The original image is displayed below.
. CSV file extracted from image:tem.csv
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