and a prevalent fungal pathogen (Candida albicans) are inhibited more when the bacterial and fungal cells were nurtured with the synthesized SB-Ag2S QDs, compared with TGA-Ag2S QDs or free unbound Schiff bases. The minimum inhibitory concentration (MIC) results confirmed that even low concentrations of SB-Ag2S QDs were able to inhibit bacterial (MIC 5–75 μg mL−1) and fungal growth (MIC 80–310 μg mL−1)
在本文中,首次用四种不同的二
硫代
氨基甲酸衍
生物席夫碱(SB)作为封端剂在一锅合成中制备了低维Ag 2 S量子点。这些SB封端的Ag 2 S量子点几乎呈球形,平均尺寸范围为4.0至5.6 nm,略小于传统的
巯基乙酸(TGA)封端的Ag 2 S量子点。我们证明,当培养细菌和真菌细胞时,革兰氏阳性菌(
枯草芽孢杆菌和
金黄色葡萄球菌)、革兰氏阴性菌(大肠杆菌和
铜绿假单胞菌)和常见的真菌病原体(白色念珠菌)的生长受到更多抑制与合成的 SB-Ag 2 S QD 相比,与 TGA-Ag 2 S QD 或游离未结合的希夫碱相比。最低抑菌浓度(MIC)结果证实,即使是低浓度的SB-Ag 2 S QD也能够抑制细菌(MIC 5–75 μg mL -1 )和真菌生长(MIC 80–310 μg mL -1 ),并且在某些情况下,它们的效果优于
链霉素(8-25 μg mL -1 )。致死性
生物测定结果证实SB-Ag