Discriminative Molecular Detection Based on Competitive Absorption by a Luminescent Metal-Organic Framework

Sunhwi Eom, Han Geul Lee, Dong Won Kang, Minjung Kang, Hyojin Kim, Youngseo Kim, Sungnam Park, Dohyun Moon, Chang Seop Hong

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Distinguishing specific molecules from similar chemical species with minor structural differences is challenging, and differentiation has typically been based on analyte-dependent host-guest interactions upon irradiation with a single wavelength. In this study, we prepared a Cd-based metal-organic framework exhibiting nearly constant emission intensity over a wide range of excitations. Because of its unique emission characteristics, this material facilitated the differentiation of specific molecules amidst structurally similar chemical species via competitive absorption. Such discriminative identification was uniquely achieved based on the use of different excitation wavelengths and is demonstrated to be applicable to the recognition of a target analyte in sensory applications.

Original languageEnglish
Pages (from-to)40372-40377
Number of pages6
JournalACS Applied Materials and Interfaces
Volume10
Issue number47
DOIs
Publication statusPublished - 2018 Nov 28

Keywords

  • competitive absorption
  • constant emission intensity
  • discriminative detection
  • metal-organic framework
  • photoluminescence

ASJC Scopus subject areas

  • Materials Science(all)

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