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Fluorene-Based Conjugated Microporous Polymers: Preparation and Chemical Sensing Application
Qiujing Zhang1, Sen Yu1, Qian Wang1
1College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, P. R. China.
Macromolecular Rapid Communications
|October 31, 2017
Summary
Novel fluorene-based conjugated microporous polymers (FCMPs) offer strong fluorescence for optoelectronic applications. FCMP3 demonstrates superior surface area, pore volume, and photoluminescence, showing high efficiency in detecting nitroaromatic compounds.
Area of Science:
- Materials Science
- Polymer Chemistry
- Nanotechnology
Background:
- Conjugated microporous polymers (CMPs) exhibit strong fluorescence, making them suitable for optoelectronic applications like photocatalysis and chemical sensing.
- Developing novel CMPs with tailored electronic structures is crucial for enhancing their performance in these applications.
Purpose of the Study:
- To synthesize and characterize a series of novel fluorene-based conjugated microporous polymers (FCMPs) with varying electronic structures.
- To investigate the porosity, surface area, fluorescence properties, and chemical sensing capabilities of the synthesized FCMPs.
Main Methods:
- Yamamoto coupling reactions were employed to synthesize FCMPs using rationally designed fluorene-based monomers.
- The synthesized FCMPs were characterized for their porosity, specific surface area, pore volume, and solid-state photoluminescence quantum yield.
- The chemical sensing performance of FCMPs was evaluated using nitroaromatic compounds as analytes, determining Stern-Volmer constants.
Main Results:
- The synthesized FCMPs exhibited high microporosity, significant specific surface areas, and tunable fluorescence.
- FCMP3, incorporating a triazine unit, achieved the highest specific surface area (489 m² g⁻¹), pore volume (0.30 cm³ g⁻¹), and photoluminescence quantum yield (11.46%).
- FCMP3 demonstrated excellent sensing capabilities for nitroaromatic compounds, with high Stern-Volmer constants for nitrobenzene, 4-nitrotoluene, and 2,4-dinitrotoluene.
Conclusions:
- The developed fluorene-based conjugated microporous polymers (FCMPs) show promising properties for optoelectronic applications.
- FCMP3, in particular, exhibits outstanding performance in terms of porosity, fluorescence, and chemical sensing of nitroaromatic compounds.
- These findings suggest that FCMPs are competitive sensing agents for detecting hazardous nitroaromatic compounds.
