Pyrazine-based hollow spherical self-assemblies: A portable tool for detection of volatile organic amines

Meenal Kataria, Jinhyo Hwang, Hong Diem Chau, Na Yeon Kwon, Dong Won Lee, Taekyung Kim, Kwangyeol Lee, Youngseo Kim, Sungnam Park, Dong Hoon Choi

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


Development of easy and efficient sensing tool for instant detection of various organic amines in aqueous media has prime significance. In this context, hollow spherical H-aggregates of pyrazine derivative bearing terminal acetyl groups were demonstrated as a reaction-based vapor phase sensing tool for organic amines. The aggregates displayed ratiometric fluorescence behavior toward aliphatic amines with a detection limit at nanomolar concentrations with concomitant self-assembly modulation from spherical H-aggregates to rod-shaped J-aggregates. Surprisingly, in the presence of p-nitroaniline remarkable quenching response was observed among various aromatic amines, which is attributed to the inner filter effect and energy transfer. Furthermore, a portable efficient tool for sensing various organic amines was constructed using the aggregates, demonstrating the practical applicability of this approach. This work will provide straightforward way for designing multifunctional self-assemblies for efficient selective behavior toward various organic amines in the ground water bodies.

Original languageEnglish
Article number130110
JournalSensors and Actuators, B: Chemical
Publication statusPublished - 2021 Sept 15


  • Aggregation induced emission enhancement (AIEE)
  • H-aggregates
  • Hollow spheres
  • Inner-filter effect
  • J-aggregates
  • Pyrazine

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry


Dive into the research topics of 'Pyrazine-based hollow spherical self-assemblies: A portable tool for detection of volatile organic amines'. Together they form a unique fingerprint.

Cite this