Mixing alternating copolymers containing fluorenyl groups with phospholipids to obtain Langmuir and Langmuir-Blodgett films

Langmuir : the ACS Journal of Surfaces and Colloids
Thays C F SantosLuciano Caseli

Abstract

The control of molecular architectures may be essential to optimize materials properties for producing luminescent devices from polymers, especially in the blue region of the spectrum. In this Article, we report on the fabrication of Langmuir-Blodgett (LB) films of polyfluorene copolymers mixed with the phospholipid dimyristoyl phosphatidic acid (DMPA). The copolymers poly(9,9-dioctylfluorene)-co-phenylene (copolymer 1) and poly(9,9-dioctylfluorene)-co-quaterphenylene) (copolymer 2) were synthesized via Suzuki reaction. Copolymer 1 could not form a monolayer on its own, but it yielded stable films when mixed with DMPA. In contrast, Langmuir monolayers could be formed from either the neat copolymer 2 or when mixed with DMPA. The surface pressure and surface potential measurements, in addition to Brewster angle microscopy, indicated that DMPA provided a suitable matrix for copolymer 1 to form a stable Langmuir film, amenable to transfer as LB films, while enhancing the ability of copolymer 2 to form LB films with enhanced emission, as indicated by fluorescence spectroscopy. Because a high emission was obtained with the mixed LB films and since the molecular-level interactions between the film components can be tuned by changing t...Continue Reading

References

Apr 11, 2007·Biomacromolecules·Felippe J PavinattoOsvaldo N Oliveira
Jun 2, 2007·Langmuir : the ACS Journal of Surfaces and Colloids·Felippe J PavinattoOsvaldo N de Oliveira
Jan 17, 2008·Chemical Society Reviews·Ayyappanpillai AjayaghoshChakkooth Vijayakumar
Apr 11, 2008·Chemical Communications : Chem Comm·Anna ProustPierre Gouzerh
Mar 13, 2008·Science and Technology of Advanced Materials·Katsuhiko ArigaSomobrata Acharya

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Citations

Feb 28, 2015·ACS Applied Materials & Interfaces·Thomas P Voortman, Ryan C Chiechi
Jun 29, 2016·Journal of Fluorescence·Camila G BarbosaLaura O Péres
Nov 1, 2012·Sensors·Sandro CarraraGiovanni De Micheli
Sep 30, 2020·Advances in Colloid and Interface Science·Rebeca da Rocha RodriguesLaura Oliveira Péres
Feb 15, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·Thiago E GotoLuciano Caseli
Feb 4, 2022·Chemical Reviews·Osvaldo N OliveiraKatsuhiko Ariga

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