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Updated: May 30, 2025

Fluorescence detection methods for microfluidic droplet platforms
Published on: December 10, 2011
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.
Abstract:
Water is an integral and functional component for aqueous assemblies of POSS-NDI-POSS molecules. Water serves not only as a solvent but also as an integral component (interstitial water) in aqueous colloids self-assembled from POSS-NDI-POSS (POSS = polyhedral oligomeric silsesquioxanes, NDI = naphthalene diimide). The interstitial water confined within these colloids is attributed to the steric hindrance of the bulky POSS groups, which dissipates energy and quenches the fluorescence (FL). Control experiments with NDI molecules bearing less steric side groups (propyl or octyl), namely C3-NDI-C3 and C8-NDI-C8, confirm this role of water in structural assembly and optical function. This discovery opens new possibilities for the innovation of aqueous materials.
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