Single-Layer Ternary Chalcogenide Nanosheet as a Fluorescence-Based “Capture-Release” Biomolecular Nanosensor

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

18 Scopus Citations
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Author(s)

  • Kenry
  • Alisha Geldert
  • Zhuangchai Lai
  • Ying Huang
  • Peng Yu
  • Zheng Liu
  • Chwee Teck Lim

Detail(s)

Original languageEnglish
Article number1601925
Journal / PublicationSmall
Volume13
Issue number5
Online published18 Nov 2016
Publication statusPublished - 3 Feb 2017
Externally publishedYes

Abstract

The novel application of two-dimensional (2D) single-layer ternary chalcogenide nanosheets as “capture-release” fluorescence-based biomolecular nanosensors is demonstrated. Fluorescently labeled biomolecular probe is first captured by the ultrathin Ta2NiS5 nanosheets and then released upon adding analyte containing a target biomolecule due to the higher probe-target affinity. Here, the authors use a nucleic acid probe for the model target biomolecule Plasmodium lactate dehydrogenase, which is an important malarial biomarker. The ultrathin Ta2NiS5 nanosheet serves as a highly efficient fluorescence quencher and the nanosensor developed from the nanosheet is highly sensitive and specific toward the target biomolecule. Apart from the specificity toward the target biomolecule in homogeneous solutions, the developed nanosensor is capable of detecting and differentiating the target in heterogeneous solutions consisting of either a mixture of biomolecules or serum, with exceptional specificity. The simplicity of the “capture-release” method, by eliminating the need for preincubation of the probe with the test sample, may facilitate further development of portable and rapid biosensors. The authors anticipate that this ternary chalcogenide nanosheet-based biomolecular nanosensor will be useful for the rapid detection and differentiation of a wide range of chemical and biological species.

Research Area(s)

  • 2D nanomaterials, biomolecules, fluorescence quenching, nanosensors, transition metal chalcogenides

Citation Format(s)

Single-Layer Ternary Chalcogenide Nanosheet as a Fluorescence-Based “Capture-Release” Biomolecular Nanosensor. / Kenry; Geldert, Alisha; Lai, Zhuangchai; Huang, Ying; Yu, Peng; Tan, Chaoliang; Liu, Zheng; Zhang, Hua; Lim, Chwee Teck.

In: Small, Vol. 13, No. 5, 1601925, 03.02.2017.

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