An optical keypad lock with high resettability based on a quantum dot-porphyrin FRET nanodevice.

ABSTRACT: Due to their appealing properties, nanomaterials have become ideal candidates for the implementation of computing systems. Herein, an optical keypad lock based on a Förster resonance energy transfer (FRET) nanodevice is developed. The nanodevice is composed of a green-emission quantum dot with a thick silica shell (gQD@SiO₂) and peripheric blue-emission quantum dots with ultrathin silica spacer (bQD@SiO₂), on which 5,10,15,20-tetrakis(4-sulfophenyl)porphyrin (TSPP) is covalently linked. The nanodevice outputs dual emission-based ratiometric fluorescence, depending on the FRET efficiency of bQD-porphyrin pairs, which is highly sensitive to the metalation of TSPP: values are 59.7%, 44.8%, and 10.1% for bQD-Zn(ii)TSPP, bQD-TSPP, and bQD-Fe(iii)TSPP pairs, respectively. A

SUBMITTER: Shen P 

PROVIDER: S-EPMC10228340 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature