Nonlinear optical properties of chromophore-containing polyimides with covalently attached dyes

Gorkovenko, A. I.; Plekhanov, A. I.; Simanchuk, A. E.; Yakimanskiĭ, A. V.; Смирнов, Н. Н.; Solovskaya, N. A.; Носова, Г. И.

doi:10.3103/s8756699014010129

Cited by 5 publications

(2 citation statements)

References 11 publications

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“…Nowadays, polyimides are being investigated for applications in advanced technologies, as insulating or dielectric materials, sensors (piezoelectric polymers − or magnetoelectric laminates , ), in the field of energy applications (fuel cells, , gas separation membranes), composites, , and nanomaterials . Another interesting field is their photophysical properties with many applications − in photovoltaic, electrochromic, photochromic, thermo-optical, and electroluminescent devices.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Charge-Transfer Emission in Polyimides by Cyano-Groups Doping

Sebastián

Martínez‐Martínez²,

Maceiras³

et al. 2015

J. Phys. Chem. B

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Conjugated polyimides (PI) are successfully synthesized by chemical imidization through in situ silylation of diamines by the alteration of different donor-acceptor monomers. A detailed photophysical characterization is performed in the monomers and different polymers in tetrahydrofuran solutions. The emission spectra of the related donor-acceptor polymers with electron withdrawing cyano groups showed broader and more intense fluorescence bands in comparison to the polymer without -CN groups. The new emission band results from the contribution of two different charge-transfer (CT) pathways: (i) An intramolecular CT (ICT) state in the donor monomers due to the presence of strong electron withdrawing CN groups, and (ii) a intramolecular CT complex (CTC) in the PI polymer between the donor-acceptor monomers, which is red-shifted and shows longer lifetime respect to the ICT of the diamine monomers. The very wide emission band is a very interesting feature for obtaining white light from UV light.

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