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Updated: Feb 7, 2026

Nanosponge Tunability in Size and Crosslinking Density
Published on: August 4, 2017
Stronger host-guest binding does not necessarily give brighter particles: a case study on polymeric AIEE-tunable and
Linxian Xu1, Rongrong Wang, Wei Cui
1State Key Laboratory of Luminescent Materials and Devices, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China. haotang@scut.edu.cn drcao@scut.edu.cn.
Supraspheres were created using a pillar[5]arene polymer and guests. Their optical and structural properties depended on fluorescence quantum yield, not host-guest binding strength.
Area of Science:
- Supramolecular chemistry
- Materials science
- Nanotechnology
Background:
- Pillar[5]arene-based polymers serve as hosts in supramolecular chemistry.
- Host-guest complexation is key to designing functional nanomaterials.
- Understanding structure-property relationships in nanoparticles is crucial.
Purpose of the Study:
- To prepare supraspheres using a pillar[5]arene host and multitopic guests.
- To investigate the correlation between host-guest binding and nanoparticle properties.
- To identify key factors influencing the optical and structural characteristics of these supraspheres.
Main Methods:
- Synthesis of supraspheres from a pillar[5]arene-based polymer and various guests.
- Host-guest binding studies in nanosystems.
- Characterization of nanoparticle properties, including fluorescence capability, density, and particle size.
Main Results:
- Supraspheres were successfully prepared.
- Nanoparticle properties (optical and structural) were found to correlate with relative fluorescence quantum yield.
- No direct correlation was observed between host-guest binding affinities and these properties.
Conclusions:
- Relative fluorescence quantum yield is a critical determinant of suprasphere properties.
- Host-guest binding affinity is not the primary factor governing suprasphere characteristics.
- This finding offers new insights for designing pillararene-based nanomaterials.
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