Grazing-incidence wide-angle X-ray diffraction study on molecular aggregation state of imprinted polyimide film before and after hard baking

Siqing, Sudu; Wu, Hui; Yamaguchi, Hiroki; Shinohara, Takamichi; Sakata, Osami; Takahara, Atsushi

doi:10.1007/s00289-012-0784-0

Cited by 3 publications

(3 citation statements)

References 22 publications

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“…Therefore, the presence of 13 nm −1 is attributed to the chain stacking of PI [ 40 ]. Moreover, there is also a characteristic peak at 18.5 nm −1 , which suggests that π–π stacking occurs between the hexatomic rings of carbon nanotubes and benzene ring of PI molecular chains [ 41 ].…”

Section: Resultsmentioning

confidence: 99%

Exploring the Interfacial Phase and π–π Stacking in Aligned Carbon Nanotube/Polyimide Nanocomposites

Jiang

Zhang

et al. 2020

Nanomaterials

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To characterize the interfacial microstructure and interaction at a nanoscale has a significant meaning for the interface improvement of the nanocomposites. In this study, the interfacial microstructure and features of aligned multiwalled carbon nanotube (MWNT) and conjugated polymer polyimide (PI) with three molecular structures were investigated using small-angle X-ray scattering (SAXS), wide-angle X-ray diffraction (WAXD), and fluorescence emission spectroscopy. It was found that aligned MWNT/PI nanocomposites had a nonideal two-phase system with the interfaces belonging to long period stacking ordered structure. Attributed to the π–π stacking effect, MWNT/BTDA-MPD presented the most regular arrangement verified by fractal dimension. By adopting a one-dimension correlation function, each phase dimension in aligned MWNT/PI nanocomposites was calculated and verified by high resolution transmission electron microscopy (HRTEM) and X-ray diffraction (XRD). The π–π stacking was demonstrated to be an important interaction between MWNT and PI via WAXD and fluorescence emission spectroscopy, and it was influenced by the linkage bond between benzene rings in PIs. This work is of significance to reveal the interfacial features between conjugated polymer and carbon nanotubes (CNTs), which is favorable for the interface design of CNT-based high performance nanocomposites.

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Section: Resultsmentioning

confidence: 99%

Exploring the Interfacial Phase and π–π Stacking in Aligned Carbon Nanotube/Polyimide Nanocomposites

Jiang

Zhang

et al. 2020

Nanomaterials

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“…To estimate the chain orientation, measurements were performed with the X-ray beam oriented parallel and perpendicular to the line pattern. [16][17][18][19][20][21][22][23][24] To improve angular resolution, a soller slit was installed in front of the detectors. The divergence angle was determined to be 0.099°.…”

Section: Characterizationmentioning

confidence: 99%

“…The molecular aggregation state of the NI_P3HT and PCBM/ NI_P3HT thin films was analyzed using GIXD. 16,23,24) The geometry of the measurements and lattice planes are illustrated in Fig. 6.…”

Section: Gixdmentioning

confidence: 99%

“Buried” nano-structure and molecular aggregation state in ordered heterojunction poly(3-hexylthiophene)-based photovoltaics

Shinohara

Higaki

Hoshino

et al. 2014

Jpn. J. Appl. Phys.

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The morphology of ordered heterojunction organic photovoltaics (OHJ-OPVs) interfaces was evaluated using synchrotron radiation small angle X-ray scattering and grazing incidence X-ray diffraction. [6,6$]-phenyl C61-butyric acid methyl ester (PCBM) was deposited on the line/space patterned poly(3-hexylthiophene-2,5-diyl) (P3HT) thin film fabricated by nano-imprinting. After deposition of the PCBM film, the P3HT thin film retained the rectangular edge features of the imprinted mold, with some Gaussian broadening due to interdiffusion and partial phase mixing at the P3HT/PCBM interface. The P3HT main chains were oriented vertically in the nano-imprinted line pattern and showed π-π stacking along the line direction. PCBM nano-crystals exist throughout the OHJ-OPV thin film.

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Effects of morphology evolution on solution-processed small molecule photovoltaics via a solvent additive

Hoang

Rasool

et al. 2017

J. Mater. Chem. C

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Grazing-incidence wide-angle X-ray diffraction study on molecular aggregation state of imprinted polyimide film before and after hard baking

Cited by 3 publications

References 22 publications

Exploring the Interfacial Phase and π–π Stacking in Aligned Carbon Nanotube/Polyimide Nanocomposites

Exploring the Interfacial Phase and π–π Stacking in Aligned Carbon Nanotube/Polyimide Nanocomposites

“Buried” nano-structure and molecular aggregation state in ordered heterojunction poly(3-hexylthiophene)-based photovoltaics

Effects of morphology evolution on solution-processed small molecule photovoltaics via a solvent additive

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