In situ formation of molecular-scale ordered polyaniline films by zinc coordination

Lee, Hong‐Joon; Hur, Sang-Ook; Ahn, Min‐Kyoon; Changez, Mohammad; Lee, Jae‐Suk

doi:10.1039/c7nr01060e

Cited by 22 publications

(14 citation statements)

References 49 publications

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“…The HR‐TEM images showed a long‐range ordered structure of NH‐TATDPP with a d spacing of 0.30 nm, which perfectly matches with the XRD analysis result. This also confirmed the π–π‐stacked structure of NH‐TATDPP (Figure b) …”

Section: Resultssupporting

confidence: 80%

Hydrogen Bonding as a Supramolecular Tool for Robust OFET Devices

Mula

Han

Heiser

et al. 2019

Chemistry A European J

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In the present study, we demonstrated the effect of hydrogen bonding in the semiconducting behaviour of a small molecule used in organic field-effect transistors (OFETs). For this study,t he highly soluble dumbbell-shaped molecule, Boc-TATDPP based on aB oc-protected thiophenediketopyrrolopyrrole (DPP) and triazatruxene (TAT)m oieties was used. The two Boc groups of the molecule were removed by annealing at 200 8C, which createdas trong hydrogen-bonded network of NH-TATDPP supported by additional p-p stacking. These were characterised by thermogravimetric analysis (TGA), UV/Vis and IR spectroscopy,X RD and high-resolution (HR)-TEM measurements. FETsw ere fabricat-ed with the semiconducting channel made of Boc-TATDPP and NH-TATDPP separately.I ti sw orth mentioning that the Boc-TATDPP film can be cast from solutiona nd then annealedt og et the other systemsw ithN H-TATDPP.M ore importantly,NH-TATDPP showedsignificantly higherhole mobilities compared to Boc-TATDPP.I nterestingly,t he high hole mobility in the case of NH-TATDPP was unaffectedu pon blendingw ith [6,6]-phenyl-C71-butyrica cid methyl ester (PC 71 BM). Thus, this robust hydrogen-bonded supramolecular network is likely to be useful in designing efficient and stable organico ptoelectronic devices.[**] OFET = organicfield-effect transistor.Supporting information and the ORCID identification number(s) for the author(s) of this article can be found under: https://doi.

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Section: Resultssupporting

confidence: 80%

Hydrogen Bonding as a Supramolecular Tool for Robust OFET Devices

Mula

Han

Heiser

et al. 2019

Chemistry A European J

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“…It is well known that structural disorder hinders efficient charge transport in conducting polymer films 8,9 , thus degrades device performance. To achieve long-range charge transport, one promising strategy is to align the linear conducting polymer chains into quasi-two-dimensional (q2D) crystalline films 10,11 . The q2D film, composed by highly ordered supramolecular assembly of molecules/polymers with fully expanded-coil conformation via interchain interactions 12–14 , can provide multiple pathways for interchain charge transport 8,9 and bypass possible defects of individual polymer chains 15 .…”

Section: Introductionmentioning

confidence: 99%

Engineering crystalline quasi-two-dimensional polyaniline thin film with enhanced electrical and chemiresistive sensing performances

et al. 2019

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Engineering conducting polymer thin films with morphological homogeneity and long-range molecular ordering is intriguing to achieve high-performance organic electronics. Polyaniline (PANI) has attracted considerable interest due to its appealing electrical conductivity and diverse chemistry. However, the synthesis of large-area PANI thin film and the control of its crystallinity and thickness remain challenging because of the complex intermolecular interactions of aniline oligomers. Here we report a facile route combining air-water interface and surfactant monolayer as templates to synthesize crystalline quasi-two-dimensional (q2D) PANI with lateral size ~50 cm2 and tunable thickness (2.6–30 nm). The achieved q2D PANI exhibits anisotropic charge transport and a lateral conductivity up to 160 S cm−1 doped by hydrogen chloride (HCl). Moreover, the q2D PANI displays superior chemiresistive sensing toward ammonia (30 ppb), and volatile organic compounds (10 ppm). Our work highlights the q2D PANI as promising electroactive materials for thin-film organic electronics.

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“…The P(NB- g -St)- b -P(NB- g -HSt) thin films without additives were prepared by solvothermal annealing (SVTA) and post-thermal treatment for 10 min at 180 °C as shown in Scheme c. SVTA is an effective method for self-assembly of low flexible polymers, such as metal–organic framework, and polymers with large χ. , Briefly, films of pure AmBBCP were coated on the silicon or glass substrates by drop-casting the solution of the AmBBCP in dioxane, and then, solvent vapor annealing with heating was simultaneously performed in a chamber saturated with dioxane, a nonselective solvent. ,, This induces self-assembly of the AmBBCP having a large χ parameter. When the AmBBCPs were annealed in solvent vapor, amorphous structures for SP1-0R to 5-0R were seen in the field-emission scanning electron microscopy (FE-SEM) of cross-sectional images (Figure a).…”

Section: Resultsmentioning

confidence: 99%

Hydrogen Bonding-Mediated Phase Transition of Polystyrene and Polyhydroxystyrene Bottlebrush Block Copolymers with Polyethylene Glycol

Seo

Chae

et al. 2019

Macromolecules

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A simple strategy was explored to systematically control the phase transition of an amphiphilic bottlebrush block copolymer (AmBBCP), poly-[(norbornene-graf t-styrene)-block-(norbornene-graf t-hydroxystyrene)], with polymeric additives, such as poly(ethylene glycol) methyl ether (mPEG), poly(2-vinylpyridine) (P2VP), and poly(methyl methacrylate) (PMMA). The precursor polymers, poly[(norbornene-graf t-styrene)-block-(norbornene-graf t-4-tert-butoxystyrene)], were synthesized by sequential ring-opening metathesis polymerization of ω-endnorbornyl polystyrene and poly(4-tert-butoxystyrene). Acid hydrolysis of the tert-butyl groups in the precursor resulted in the AmBBCP with an ultrahigh molecular weight (∼2880 kDa) and relatively low dispersity (∼1.21). The disordered structures of neat AmBBCP were transformed to ordered lamellae by solvothermal annealing. AmBBCP and mPEG blended well because of H-bonding, maintaining well-ordered lamellae up to 40 wt % mPEG. The phase transition from ordered to disordered state occurred when increasing more than 50 wt %. The AmBBCP blended with P2VP and PMMA was compared. The effect of mPEG on phase transition, domain size, and refractive index and the photonic properties were determined.

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In situ formation of molecular-scale ordered polyaniline films by zinc coordination

Cited by 22 publications

References 49 publications

Hydrogen Bonding as a Supramolecular Tool for Robust OFET Devices

Hydrogen Bonding as a Supramolecular Tool for Robust OFET Devices

Engineering crystalline quasi-two-dimensional polyaniline thin film with enhanced electrical and chemiresistive sensing performances

Hydrogen Bonding-Mediated Phase Transition of Polystyrene and Polyhydroxystyrene Bottlebrush Block Copolymers with Polyethylene Glycol

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