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A Multistimuli Responsive, Flexible Luminescent Framework and Its Applicability in Anticounterfeiting.

Meng Liang¹, Siwen Hu¹, Yanning Han²

¹Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, P. R. China.

ACS Applied Materials & Interfaces

|July 28, 2023

Summary

Researchers designed a novel H-bonded organic framework (HOF) using a distyrylanthracene derivative. This material exhibits tunable fluorescence in response to methanol and water, showing promise for anticounterfeiting applications.

Keywords:

Hydrogen-bonded framework anticounterfeiting fluorescence guest stimulus response

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Published on: October 24, 2017

Area of Science:

Materials Science
Supramolecular Chemistry
Organic Chemistry

Background:

Hydrogen-bonded organic frameworks (HOFs) offer tunable properties for advanced applications.
Designing HOFs with specific stimuli-responsive behaviors remains a key challenge.

Purpose of the Study:

To design and synthesize a novel H-bonded organic framework (HOF) with flexible and stimuli-responsive properties.
To investigate the framework's response to methanol and water adsorption/desorption.

Main Methods:

Synthesis of a linear distyrylanthracene derivative (DDATAn) incorporating diaminotriazine (DAT) units.
Crystallization to form a double interpenetrated 2D layer structure (X-HOF-3) with 1D solvent channels.
Spectroscopic analysis of fluorescence changes upon exposure to methanol and water.

Main Results:

The synthesized DDATAn derivative self-assembled into a double interpenetrated HOF (X-HOF-3) via hydrogen bonding.
X-HOF-3 displayed a bathochromic fluorescence shift upon methanol exposure.
The HOF adsorbed atmospheric water, changing fluorescence from yellow to red, reversibly with heating or mechanical disruption.

Conclusions:

The designed HOF exhibits reversible, stimuli-responsive fluorescence changes.
These properties enable its potential use as a functional material in anticounterfeiting technologies.