CAJ | 학술논문

以巯基乙酸为稳定剂在水相中合成了CdTe量子点,并将合成的CdTe量子点进行表征、纯化。通过用0.05 mol.L-1PBS缓冲溶液调节不同的pH来考察量子点的荧光强度和pH的关系。研究发现,水溶性的CdTe量子点是pH敏感的,随着pH值的降低,量子点荧光强度的下降规律与溶液pH值呈现良好的线性关系。结果表明,CdTe量子点是一个令人满意的pH敏感的探针,有潜在的化学和生物传感能力。
이구기을산위은정제재수상중합성료CdTe양자점,병장합성적CdTe양자점진행표정、순화。통과용0.05 mol.L-1PBS완충용액조절불동적pH래고찰양자점적형광강도화pH적관계。연구발현,수용성적CdTe양자점시pH민감적,수착pH치적강저,양자점형광강도적하강규률여용액pH치정현량호적선성관계。결과표명,CdTe양자점시일개령인만의적pH민감적탐침,유잠재적화학화생물전감능력。
Thioglycolic acid（TGA） capped water-soluble CdTe quantum dots（QDs） was synthesized via a hydrothermal synthesis method.The as-prepared QDs were characterized and purified.The relationship between fluorescence intensity of QDs and pH values was investigate by different concentration of PBS buffer.The results indicated that the water-soluble QDs was pH sensitive and the fluorescence of the QDs could be irreversibly quenched by H＋ and the fluorescence intensity of the water-soluble QDs decreased linearly with the pH decrease in the range of 6.45~8.22.It was found to be a satisfactory pH sensitive probe which could have potential chemical and biochemical sensing ability.