光诱导的电子从PbS量子点转移到(III) 希夫基复合物:一种蛋白质抑制剂的光激活
Mark D Peterson1, Robert J Holbrook, Thomas J Meade
1Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States.
Journal of the American Chemical Society
|August 13, 2013
概括
光诱导的电子转移激活了使用硫化量子点的希夫基复合体. 这种光驱动的过程可以通过控制潜在的治疗应用的配体交换来实现向的药物递送.
科学领域:
- 无机化学 无机化学
- 材料科学 材料科学 材料科学
- 摄影化学的使用.
背景情况:
- 生物惰性的基希夫基复合物具有有限的治疗潜力.
- 光诱导电子转移 (PET) 为金属复合物的受控激活提供了一种机制.
- 硫化量子点 (PbS QD) 由于其可调节的电子特性,可以调节PET.
研究的目的:
- 为了研究使用PbS QDs的 Schiff基复合物的光激活.
- 探索由PET触发的连接物交换机制.
- 评估开发光敏无机治疗剂的潜力.
主要方法:
- 一个Co (III) 希夫基复合物的合成和特征.
- 用于制备合体PbS量子点 (1.5-1.7纳米半径).
- 在光照辐射时进行光谱分析以监测电子转移和连接物交换.
主要成果:
- 从PbS QDs到Co (III) -SB复合体的光诱导电子转移得到了125ns时间常数的证实.
- 减少中心触发了轴联体的释放.
- 在QDs的光激发后,4-methylimidazole的干位移增加了大约八倍.
结论:
- 光激活电子转移为控制复合物的反应性提供了一种新的方法.
- 这种方法可以对复合物进行有针对性的修改,从而促进对生物遗址的特定结合.
- 通过QD介导的PET进行合作氧化还原结合结合,为设计无机疗法提供了一个有前途的策略.
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