Characterization, liquid crystalline behavior, optical and electrochemical study of new aliphatic–aromatic polyimide with naphthalene and perylene subunits

Schab‐Balcerzak, Ewa; Iwan, Agnieszka; Grucela-Zajac, Marzena; Krompiec, Michał; Podgórna, Marzena; Domański, Marian; Siwy, Mariola; Janeczek, Henryk

doi:10.1016/j.synthmet.2011.05.036

Cited by 25 publications

(8 citation statements)

References 41 publications

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“…1b) detected a sharp endothermic peak (peak temperature z159 C) upon heating, most probably due to a mesophase transition of long-range order of naphthalenediimide mesogens as in the liquid crystal of polyimides. 18,19 Thirdly, the AFM phase image of 3 (Fig. 1c) displayed distinct hydrophobic (bright parts)/hydrophilic (dark parts) micro-phase separation in a bicontinuous manner which was usually observed in amphiphilic block copolymers; 20 the bright parts were assigned to the aggregates of hydrophobic naphthalenediimide cores along with the aliphatic arms while the dark parts were assigned to the aggregates of hydrophilic sulfonated units accompanied by water molecules.…”

Section: Self-assembly Of Polymermentioning

confidence: 81%

Proton-conductive polyimides consisting of naphthalenediimide and sulfonated units alternately segmented by long aliphatic spacers

Zhang

2014

J. Mater. Chem. A

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Sulfonated polyimides (SPIs) consisting of naphthalenediimide and sulfonated units alternately segmented by long aliphatic spacers have been facilely synthesized. Such an unprecedented molecular design of SPIs avoiding conventional aromatic-type imide units allows the stacking of naphthalenediimide moieties and aggregation of sulfonate groups simultaneously, imparting high conductivity and excellent hydrolytic stability.

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Section: Self-assembly Of Polymermentioning

confidence: 81%

Proton-conductive polyimides consisting of naphthalenediimide and sulfonated units alternately segmented by long aliphatic spacers

Zhang

2014

J. Mater. Chem. A

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“…These data were estimated by using the oxidation onset (E ox ) and reduction onset (E red ) values. The calculations were made by using the following equations [32,33]: …”

Section: Optical and Electrochemical Propertiesmentioning

confidence: 99%

Thermal, fluorescence, and electrochemical characteristics of novel poly(urethane-imide)s

Avcı

Şirin

2013

Designed Monomers and Polymers

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In this study, the novel thermally stable poly(urethane-imide)s (PUIs) were synthesized. The structures of the obtained polymers were confirmed by FT-IR and NMR techniques. The molecular weight distribution parameters of the synthesized PUIs were determined by the size exclusion chromatography (SEC). The synthesized PUIs were also characterized by solubility tests, solution viscosity, TG-DTA, and DSC analyses. Cyclic voltammetry measurements were carried out, and HOMO-LUMO energy levels and electrochemical band gaps (E 0 g ) were calculated from their absorption edges. Additionally, optical band gaps (E g ) were determined by using UV-vis spectra of the materials. Fluorescence measurements were carried out in various concentrated DMSO solutions to determine the optimum concentrations to obtain the maximal PL intensities. Also, morphological characterizations were made by scanning electron microscopy technique.

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“…For example, naphthalene-and perylene-containing polyimides have been reported throughout the literature. [31][32][33][34] The majority of polyheteroarylenes based on naphthalene dianhydrides or perylene dianhydrides are difficult to process, being insoluble in common organic solvents and only soluble in strong acids. The introduction of flexible groups or bulky units in the backbone of aromatic polymers can lead to soluble products.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and nanoparticle formation of polyarylene poly(amic acid)s and polyimides containing fluorescent dye moieties

Budy

Rose

Gibson

et al. 2020

Polymer International

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New naphthalene-and perylene-containing polyarylene poly(amic acid)s and polyimides were synthesized from a new phenylated phenylenediamine. A small-molecule model compound was also synthesized with naphthalene end-groups. The new compounds were characterized, and the structures were confirmed using 1 H NMR and attenuated total reflectance Fourier transform infrared spectroscopy. Thermal characterization was conducted using thermogravimetric analysis and differential scanning calorimetry. Onset of thermal degradation temperatures for the naphthalene and perylene polyimides were 561 and 545°C, and char yields at 1000°C were 61 and 59% (under nitrogen), respectively. The glass transition temperatures were 381 and 396°C, respectively. Molecular weights determined using gel permeation chromatography were M w = 35 000 and 24 000 g mol −1 , respectively. The absorption maxima were at 387 and 427/458/491/527 nm, respectively, while the fluorescence emission maxima were at 498 and 541/582 nm, respectively. Nanoparticles were prepared from these new fluorescent dye-containing polyarylene polyimides with sizes of 102/397 and 177 nm, respectively, as determined using dynamic light scattering.

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Characterization, liquid crystalline behavior, optical and electrochemical study of new aliphatic–aromatic polyimide with naphthalene and perylene subunits

Cited by 25 publications

References 41 publications

Proton-conductive polyimides consisting of naphthalenediimide and sulfonated units alternately segmented by long aliphatic spacers

Proton-conductive polyimides consisting of naphthalenediimide and sulfonated units alternately segmented by long aliphatic spacers

Thermal, fluorescence, and electrochemical characteristics of novel poly(urethane-imide)s

Synthesis, characterization and nanoparticle formation of polyarylene poly(amic acid)s and polyimides containing fluorescent dye moieties

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