Solar-energy-facilitated CdSxSe1-x quantum dot bio-assembly in Escherichia coli and Tetrahymena pyriformis

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Li-Jiao Tian
  • Wen-Wei Li
  • Wei-Kang Wang
  • Wei Wei
  • Paul K. S. Lam
  • Long-Hua Zhang
  • Peng Zhou
  • Han-Qing Yu

Detail(s)

Original languageEnglish
Pages (from-to)6205-6212
Journal / PublicationJournal of Materials Chemistry A
Volume7
Issue number11
Online published15 Feb 2019
Publication statusPublished - 21 Mar 2019

Abstract

Bio-assembled QDs (Bio-QDs) with unique biocompatibility and fluorescence features have diverse applications, including bio-imaging, biomedical detection, biological hydrogen production and solar-to-chemical conversion. However, their relatively low production rate and poor fluorescence properties are two major barriers. In this work, we demonstrate a novel and sustainable regulation method to improve the synthesis of Bio-QDs in prokaryotes and eukaryotes. We develop solar-energy-facilitated CdSxSe1-x Bio-QDs fabrication in Escherichia coli. The resulting Bio-QDs were assembled within 1 hour and have a long fluorescence lifetime (24.8 ns). Spectroscopic analyses revealed that the solar-energy-facilitated Bio-QD synthesis was due to the photocatalytic roles of the self-assembled Bio-QDs. Similar photo-assisted Bio-QD synthesis was also observed in eukaryotic model Tetrahymena pyriformis. This work provides a promising approach to use solar energy to produce Bio-QDs with a longer emission lifetime, which would favour fluorescence lifetime imaging microscopy applications.

Citation Format(s)

Solar-energy-facilitated CdSxSe1-x quantum dot bio-assembly in Escherichia coli and Tetrahymena pyriformis. / Cui, Yin-Hua; Tian, Li-Jiao; Li, Wen-Wei; Wang, Wei-Kang; Wei, Wei; Lam, Paul K. S.; Zhang, Long-Hua; Zhou, Peng; Yu, Han-Qing.

In: Journal of Materials Chemistry A, Vol. 7, No. 11, 21.03.2019, p. 6205-6212.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review