探索二 (l-histidine) 铜 (II) 的热稳定性,振动性质和生物评估:一个结合理论和实验研究
Kamila R Abreu1, Jailton R Viana1, João G Oliveira Neto1
1Center for Sciences of Imperatriz, Federal University of Maranhao (UFMA), 65900-410 Imperatriz, MA, Brazil.
ACS omega
|November 4, 2024
概括
双 (l-histidine) 铜 (II) ([Cu (l-His) Cl2]) 在低度下对金黄色菌具有显著的抗菌活性. 这种铜复合体显示了热稳定性和临床应用的潜力.
科学领域:
- 无机化学 无机化学 有机化学
- 材料科学 材料科学 材料科学
- 生物化学 生物化学
背景情况:
- 有氨基酸的铜复合体正在被用于医学应用.
- 了解晶体结构和特性对于开发新的治疗剂至关重要.
研究的目的:
- 为了合成和表征二 (l-histidine) 铜 (II) ([Cu (l-His) Cl2]).
- 为了评估其热稳定性,结构性质和抗菌有效性.
- 评估其临床应用的潜力.
主要方法:
- 用于晶体合成的缓慢蒸发方法.
- 用于结构分析的X射线粉末衍射 (XRPD).
- 热重力测量 (TG) 和差分热分析 (DTA) 对于热稳定性.
- 福利埃变换红外 (FT-IR) 和拉曼光谱法用于振动属性.
- 密度函数理论 (DFT) 用于光谱分配.
- 希什菲尔德对分子间相互作用的表面分析.
- 抗菌活性测定 (MIC,细胞活力).
主要成果:
- [Cu(l-His) Cl2]复合体结晶成一个正方体结构 (P212121空间组).
- 它表现出高达460K的热稳定性,在465K的温度下过渡到无形形式.
- DFT计算有助于分配FT-IR和拉曼频谱.
- 希尔什菲尔德分析确定了关键的分子间相互作用 (Cl···H,O···H,H···H).
- 该综合体显示出对*黄金葡萄球菌*,空气菌*和白菌*具有显著的抗菌活性.
- 它在1.5微米时抑制了金黄色菌的生长,没有观察到对人类细胞系的毒性.
结论:
- 合成的[Cu(l-His) Cl2]复合物具有有利的结构,热和电子特性.
- 它表现出强大而有选择性的抗菌活性,特别是在对抗黄金菌.
- 药物动力学参数支持其作为治疗剂的潜力,需要进一步的临床研究.
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