In situ green synthesis of fluorescent monodispersed mesoporous silica spheres/poly(p-phenylenevinylene) composites

[Display omitted] A facile one-pot synthesis for the composite materials fabricated from conjugated polymer, poly(p-phenylenevinylene) (PPV), and monodispersed mesoporous silica spheres (MMSS) is demonstrated. Composite materials having superior photoluminescence properties are easily obtained using...

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Bibliographic Details
Published inJournal of colloid and interface science Vol. 468; pp. 292 - 299
Main Authors Yamada, Yuri, Nakamura, Tadashi, Yano, Kazuhisa
Format Journal Article
LanguageEnglish
Published United States Elsevier Inc 15.04.2016
Subjects
Conjugated
Fluorescence
Fourier transforms
Green chemistry
In situ
Luminescence
Monodispersed
Particulate composites
Photoluminescence
Polymer matrix composites
Polymerization
Porous materials
Silicon dioxide
Synthesis
PPV-monomer
Monodispersed
MMSS
Porous materials
Conjugated
In situ
PPV
Luminescence
Green chemistry
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Summary:[Display omitted] A facile one-pot synthesis for the composite materials fabricated from conjugated polymer, poly(p-phenylenevinylene) (PPV), and monodispersed mesoporous silica spheres (MMSS) is demonstrated. Composite materials having superior photoluminescence properties are easily obtained using ethylene glycol as a reaction solvent in which PPV monomers are effectively exchanged with cationic surfactants in MMSS and subsequently polymerized in the solution. The method can prevent serious reduction of photoluminescence properties which occurs inevitably during thermal treatment (200°C) to polymerize PPV. In our method, the temperature of 100°C is enough to obtain the fully polymerized PPV, which is confirmed in Fourier transform infrared (FT-IR) spectrum. Reaction mechanism is verified through direct observation of its distinguishable color changes in the reaction solution and the measurement of surface electrical potential (ζ-potential). The obtained results strongly support that PPV chains are impregnated within mesopores in isolated condition, leading to high fluorescence quantum yield (nearly 80%). Compared to the conventional route, this method reduces multistep synthesis to one-step and eliminates high temperature and high vacuum process, leading to the facile eco-friendly procedure.
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content type line 23
ISSN:0021-9797
1095-7103
DOI:10.1016/j.jcis.2016.01.041