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Photosensitive Functionalized Surface‐Modified Quantum Dots for Polymeric Structures via Two‐Photon‐Initiated Polymerization Technique
Author(s) -
Krini Redouane,
Ha Cheol Woo,
Prabhakaran Prem,
Mard Hicham El,
Yang DongYol,
Zentel Rudolf,
Lee KwangSup
Publication year - 2015
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201500045
Subject(s) - miniemulsion , materials science , polymerization , quantum dot , surface modification , polymer , amphiphile , polymer chemistry , luminescence , covalent bond , chemical engineering , copolymer , photochemistry , nanotechnology , chemistry , composite material , organic chemistry , optoelectronics , engineering
In this paper, the surface modification of CdSe‐ and CdZnS‐based quantum dots (QDs) with a functional silica shell is reported. Functionalized silica shells are prepared by two routes: either by ligand exchange and a modified Stöber process or by a miniemulsion process with amphiphilic poly(oxyethylene) nonylphenylether also know as Igepal CO‐520 (IG) as oligomeric amphiphile and modified silica precursors. The polymerizable groups on the functionalized silica shell allow covalent bonding to a polymer matrix and prevent demixing during polymerization and crosslinking. This allows the homogeneous incorporation of QDs in a crosslinked polymer matrix. This paper furthermore demonstrates that the resulting QDs, which are i) shielded with a proper silica shell and ii) functionalized with crosslinkable groups, can be used in two‐photon‐initiated polymerization processes in combination with different photoresists to obtain highly luminescent 3D structures. The resulting luminescent structures are attractive candidates for photonics and metamaterials research.