使用PMDA作为π受体对硫胺的光谱测定:方法优化,验证和计算研究
Adar Jamal Faris1, Mahmood Ali Hasan1, Shinwar A Idrees1
1Department of Chemistry, College of Science, University of Zakho Kurdistan Region Iraq shinwar.idrees@uoz.edu.krd.
RSC advances
|October 30, 2025
概括
一种新的光谱光度测量方法准确地确定了使用化二氧化的硫胺. 这种具有成本效益的技术为硫胺分析提供了高精度和灵敏度.
科学领域:
- 分析化学 分析化学
- 频谱光度测量是一种光谱光度测量.
- 计算化学计算化学
背景情况:
- 硫胺是一种关键的硫药物,在制药分析中具有重要意义.
- 准确和精确的量化方法对于药物质量控制至关重要.
- 电荷转移复杂化为光谱光度分析提供了一个有前途的途径.
研究的目的:
- 开发一种新的,快速的,经济的,精确的光谱法测定硫胺的方法.
- 为了研究硫胺和 pyromellitic dianhydride (PMDA) 之间的电荷转移复合体形成.
- 通过使用DFT计算,阐明控制复杂形成的电子相互作用和机制.
主要方法:
- 硫胺-PMDA电荷转移复合物的光谱分析.
- 紫外线-Vis光谱测试以确定最大吸收波长和酒法规的遵守.
- 摩尔比率方法,以确定复杂的固体测量和稳定常数.
- 密度函数理论 (DFT) 计算用于机械洞察力.
主要成果:
- 该方法在258nm时显示出最大的吸收,在0.2-35μg mL-1范围内遵守酒定律.
- 获得了高精度 (101.501%的恢复) 和精度 (<0.6%的RSD).
- 确定了一个1: 1复杂的固体几何学,稳定常数为2.49 × 108 L mol-1.
- DFT分析证实了涉及硫胺和PMDA的电子捐赠-接受机制.
结论:
- 成功开发了一种经过验证,高效的硫胺量化的光谱光度测量方法.
- 这项研究提供了对硫胺-PMDA电荷转移复合体的机制理解.
- 这种方法提供了一个有价值的工具,用于准确和精确的硫胺在制药样品的确定.
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