What type of study is this?

This is a In Vitro Study study.

August 22, 2025

N,O‐Alternant Belt3arene Utilized for Construction of Multi‐Color Supramolecular TADF Materials and Highly Selective Detection of 2‐Cyanopyrazine

Key Points

NOAB[3]A provides a new method for multi-color emissions using STADF materials by combining with electron acceptors, and enables selective detection of 2-cyanopyrazine.
The limit of detection for 2-cyanopyrazine reached 1.7 mg L−1, highlighting the high sensitivity of the method towards detecting trace amounts.
Synthesis includes creating an N,O alternant belt[3]arene, offering an innovative strategy for fluorescence enhancement in the presence of cyanide-containing compounds.
Developing this sensing platform demonstrates the potential for expanding applications of functionalized belt[n]arenes across various fields.

Abstract

Abstract In this work, 3,6‐dimethoxycalix3acridine (3,6‐DMO‐C3A), as a new macrocyclic arene, was synthesized and then applied to the construction of a new kind of N,O ‐alternant belt3arene (NOAB3A) by the conversion approach from macrocycle to belt. NOAB3A has a regularly hexagonal structure and electron‐rich cavity, and it can be successfully utilized as an electron donor to construct supramolecular thermally activated delayed fluorescence (STADF) materials with multi‐color emissions by its complexation with electron acceptors with different electron‐deficient abilities. Notably, due to the formation of STADF accompanied by fluorescence enhancement and redshift when NOAB3A combines with the cyanide‐containing aromatic compounds, the belt3arene can also be directly used for highly selective, sensitive, and visual detection of 2‐cyanopyrazine (2‐CP) vapor at trace level. The limit of detection (LOD) concentration for 2‐CP reached 1.7 mg L −1 , indicating that NOAB3A can serve as an excellent sensing platform for detecting 2‐CP. This work not only expands the applications of functionalized beltnarenes but also provides an innovative insight into the detection application of the STADF strategy.

Mark Helpful

Bookmark

Relay