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Fluorescence detection methods for microfluidic droplet platforms
Published on: December 10, 2011
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Fluorescence of Aqueous Assemblies Regulated by Integral Water
Jia Chen1, Dandan Gu1, Haohan Qi1
1College of Materials Science and Engineering, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, 2999 North Renmin Road, Shanghai, China.
Chemistry (Weinheim an Der Bergstrasse, Germany)
|January 31, 2025
Summary
Water acts as a key component in aqueous assemblies of polyhedral oligomeric silsesquioxanes-naphthalene diimide (POSS-NDI-POSS) molecules. This interstitial water influences structural assembly and optical properties, particularly fluorescence quenching.
Area of Science:
- Supramolecular Chemistry
- Materials Science
- Colloid Science
Background:
- Aqueous assemblies of POSS-NDI-POSS molecules are investigated.
- Water's role in these assemblies is explored beyond its function as a solvent.
Purpose of the Study:
- To elucidate the functional role of interstitial water in POSS-NDI-POSS aqueous colloids.
- To understand how confined water affects the optical properties, specifically fluorescence.
Main Methods:
- Synthesis and self-assembly of POSS-NDI-POSS molecules in aqueous media.
- Comparative studies using NDI derivatives with varying steric hindrance (C3-NDI-C3, C8-NDI-C8).
- Spectroscopic analysis to evaluate fluorescence properties.
Main Results:
- Interstitial water, confined by bulky POSS groups, plays a critical role in the structural assembly of POSS-NDI-POSS colloids.
- Confined water dissipates energy and leads to fluorescence quenching (FL).
- Control experiments confirm the influence of steric hindrance and water on optical function.
Conclusions:
- Water is an integral functional component, not just a solvent, in POSS-NDI-POSS aqueous materials.
- The steric bulk of POSS groups dictates water confinement and its impact on fluorescence.
- This understanding enables new avenues for designing advanced aqueous materials.
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