Stepwise fluorescence changes of quantum dots: single-molecule spectroscopic studies on the properties of turn-on quantum dots.

Stepwise fluorescence changes of quantum dots: single-molecule spectroscopic studies on the properties of turn-on quantum dots.

Chemical communications (Cambridge, England) (2011-11-26)

Yea Seul Kim, Min Young Kim, Jae Kyu Song, Tae Jung Kim, Young Dong Kim, Sang Soo Hah

ABSTRACT

Single-molecule spectroscopy of turn-on quantum dots induced by NADPH-dependent biocatalyzed transformations reveals that the fluorescence intensities of quantum dots functionalized with Nile Blue are stepwisely and reversibly changed in the presence of NADPH.

MATERIALS

Product Number

Brand

Product Description

N5632

Sigma-Aldrich

Nile Blue A, Dye content ≥75 %

222550

Sigma-Aldrich

Nile Blue chloride, Dye content 85 %

370088

Sigma-Aldrich

Nile Blue A perchlorate, Dye content 95 %

N0766

Sigma-Aldrich

Nile Blue A, certified by the Biological Stain Commission