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L-ribose specific recognition surface constructed by pillar[5]arene-based host-guest interaction.

Wenhui Liu1, Weiwei Xu2, Hang-Hang Luan3

  • 1College of Chemistry, Huazhong Agricultural University, Wuhan, Hubei, 430070, PR China.

Biosensors & Bioelectronics
|September 13, 2023
PubMed
Summary

Researchers developed a chiral gold surface to detect L-ribose using host-guest interactions. This functional interface shows good detection capabilities and recyclability, combining recognition with intelligence.

Keywords:
Biomimetic technologyChirality recognitionHost-guest interactionL-riboseSingle-function alynyl pillar[5]arene

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Area of Science:

  • Biochemistry
  • Materials Science
  • Analytical Chemistry

Background:

  • Chiral molecules exhibit distinct physiological effects based on their conformations.
  • Ribose, a component of RNA, is crucial for regulating biological activity.
  • Biological sugar recognition mechanisms inspire the development of chiral sensing platforms.

Purpose of the Study:

  • To construct functional chiral surfaces for recognizing L-ribose via non-covalent interactions.
  • To create a gold surface functionalized with host-guest molecules for L-ribose detection.
  • To integrate interface recognition with intelligent response capabilities.

Main Methods:

  • Assembly of single-function alkynyl pillar[5]arene (SAP5) as host and (S)-mandelate-violet (SMV) as guest on a gold surface.
  • Host-guest interaction analysis using association constants and binding ratios.
  • Detection of L-ribose using impedance and contact angle measurements.
  • Demonstration of recyclability through disassembly of the complex with zinc powder.

Main Results:

  • A functional chiral gold surface was successfully constructed using SAP5 and SMV.
  • The association constant between SMV and SAP5 was determined to be 2.95×10^4 M^-1 with a 1:1 binding ratio.
  • The developed interface effectively detected L-ribose in the concentration range of 1×10^-7 M to 1×10^-2 M.
  • The system demonstrated good recyclability, with the recognition complex being disassembled and reusable.

Conclusions:

  • The study successfully created a chiral gold surface capable of recognizing L-ribose through host-guest interactions.
  • The developed sensor exhibits sensitive detection of L-ribose and good recyclability.
  • The integration of interface recognition with intelligent disassembly offers a novel approach for biosensing applications.