Visible Light-Driven Self-Powered Device Based on a Straddling Nano-Heterojunction and Bio-Application for the Quantitation of Exosomal RNA.

ABSTRACT: This paper reports the design and fabrication of a self-powered biosensing device based on TiO₂ nanosilks (NSs)@MoS₂ quantum dots (QDs) and demonstrates a bioapplication for the quantitative detection of exosomal RNA ( Homo sapiens HOXA distal transcript antisense RNA, HOTTIP). This self-powered device features enhanced power output compared to TiO₂ NSs alone. This is attributed to the formation of a heterojunction structure with suitable band offset derived from the hybridization between TiO₂ NSs and MoS₂ QDs, i.e., the straddling (Type I) band alignment. The sensitization effect and excellent visible light absorption provided by MoS₂ QDs can prolong interfacial carrier lifetime and improve energy conversion efficiency. Thi

SUBMITTER: Pang X 

PROVIDER: S-EPMC6613566 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature