Mara Saavedra

Universidade Nova de Lisboa

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Ana Mouquinho

Universidade Nova de Lisboa

João Sotomayor

Universidade Nova de Lisboa

M. Teresa Barros

Universidade Nova de Lisboa

Krasimira T. Petrova

Universidade Nova de Lisboa

J. L. Figueirinhas

University of Lisbon

Alexandre Maiau

Universidade Nova de Lisboa

Cooperative Institutions

Universidade Nova de Lisboa

University of Lisbon

Rede de Química e Tecnologia

Uninova

Instituto Politécnico de Lisboa

National Laboratory of Energy and Geology

Escola Superior de Saúde Egas Moniz

University of Évora

Instituto de Engenharia de Sistemas e Computadores Investigação e Desenvolvimento

Instituto Superior Técnico

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Films Based on New Methacrylate Monomers: Synthesis, Characterisation and Electro-Optical Properties

Molecular Crystals and Liquid Crystals (2011)

Ana Mouquinho Mara Saavedra Alexandre Maiau Krasimira T. Petrova M. Teresa Barros

Abstract A number of liquid crystal monomers based on methacrylate derivatives were synthesised by novel mild and solventless procedures under microwave irradiation. Their photo- and thermo assisted homo- and co-polymerizations with glycidyl methacrylate were investigated. The resulting polymers were characterised by NMR, GPC, DSC, and SEM to determine their structures and properties. The effects of the structures of the monomers on the electro-optical properties were correlated. Keywords: Electro-optical propertiesgreen chemistry synthesisliquid crystal polymerPDLC Acknowledgment This work was supported by Fundaçãopara a Ciência e Tecnologia through the project PTDC/CTM/69145/2006.

Glycidyl methacrylate

10.1080/15421406.2011.570154

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Citations (26)

Fast synthesis employing a microwave assisted neat protocol of new monomers potentially useful for the preparation of PDLC films

Open Chemistry (2011)

M. Teresa Barros Ana Mouquinho Krasimira T. Petrova Mara Saavedra João Sotomayor

Abstract It has been reported that the length of the molecular chain and the rigidity of molecules influence the structure of the polymer network in PDLC films and hence the electro-optical properties of the composites. Herein, a series of new aromatic monomeric monomethacrylates, bismethacrylates and monovinylbenzene derivatives with a mesogenic core were successfully synthesized under microwave irradiation. The microwave assisted synthesis resulted in decreased reaction times, reduced solvent requirement, increased operational simplicity, and in most cases, improved yields and selectivity.

Mesogen

Rigidity (electromagnetism)

10.2478/s11532-011-0046-2

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Citations (11)