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Star-branched cationic light-emitting dot with silsesquioxane core, synthesis, and light scattering studies

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Abstract

Novel star-like hydrophobic (M) and hydrophilic (W) hybrid light-emitting dots were synthesized by grafting conjugated arms at eight vertexes of polyhedral oligomeric silsesquioxane (POSS) cage. The water-soluble cationic polymer W contains POSS as a core and two layers shell—an inner layer shell consists of the conjugated organic chain and a long chain of hydrophilic polymer as outer layer shell for solubilization in water. The 3D structure renders non-aggregation properties of W in solution as the wavelength for the absorption and luminescence spectra remains unchanged over different concentrations. The effects of ionic strength and pH on the properties of cationic polymer W were studied using UV, dynamic- and static-light scattering (DLS and SLS).

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Authors and Affiliations

  1. Institute of Materials Research and Engineering (IMRE) Agency for Science, Technology and Research (A*STAR), 3, Research Link, Singapore, 117602, Singapore

    Yang Xiao, Khine Y. Mya, Beng H. Tan & Chao B. He

  2. Department of Materials Science and Engineering, National University of Singapore, Singapore, 117576, Singapore

    Chao B. He

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  1. Yang Xiao
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  2. Khine Y. Mya
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  3. Beng H. Tan
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  4. Chao B. He
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Correspondence to Chao B. He.

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Xiao, Y., Mya, K.Y., Tan, B.H. et al. Star-branched cationic light-emitting dot with silsesquioxane core, synthesis, and light scattering studies. Polym. Bull. 68, 2131–2144 (2012). https://doi.org/10.1007/s00289-012-0709-y

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  • DOI: https://doi.org/10.1007/s00289-012-0709-y

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