Structure–property relationship in charge transporting behaviour of room temperature liquid crystalline perylenebisimides

Prajitha, K. P.; Chithiravel, Sundaresan; Krishnamoorthy, Kothandam; Asha, S. K.

doi:10.1039/c4tc01806k

Cited by 17 publications

(15 citation statements)

References 46 publications

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“…It should however be noted that the conductivity is related to charge carrier mobility, which is more precise than the conductivity. Therefore, we measured the charge carrier mobility of the polymers using space charge limited current method by following an earlier established procedure . The charge carrier mobility of all the polymers was found to be low (Table S13, ESI).…”

Section: Resultsmentioning

confidence: 99%

Alkyl‐Chain‐Separated Triphenybenzene ‐ Carbazole Conjugates and their Derived Polymers: Candidates for Sensory, Electrical and Optical Materials

et al. 2016

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Four new triphenylbenzene based carbazoles (THPBCz4, THPBCz6, THPBCz8 and THPBCz10) and polycarbazoles (polyTHPBCz4, polyTHPBCz6, polyTHPBCz8 and polyTHPBCz10), have been synthesized. Photoluminescence spectra of the monomers in dichloromethane exhibit two intense bands at 353 and 369 nm. Two additional bands (410 and 435 nm) are also observed due to intermolecular interactions. These bands are more intense in the case of thin films, indicating stronger π‐π stacking interactions in the solid state. Due to the extended π‐conjugation, the polycarbazoles display two main emission bands (495 and 520 nm) which are red shifted as compared to the monocarbazoles. Due to the presence of emissive platforms such as triarylbenzene and carbazole, both monomers and polymers, function as efficient sensors for the detection of polynitroaromatic analytes (PA, DNT, p‐DNB and m‐DNB). The electrochemically polymerized carbazole derivatives showed maximum capacitance of 41 F/g for polyTHPBCz6. The SCLC measurement reveals a maximum mobility of 6 x 10−6 cm2/Vs for polyTHPBCz4 that showed better packing due to flexible alkyl chains that connect the conjugated moieties.

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Section: Resultsmentioning

confidence: 99%

Alkyl‐Chain‐Separated Triphenybenzene ‐ Carbazole Conjugates and their Derived Polymers: Candidates for Sensory, Electrical and Optical Materials

et al. 2016

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“…For the preparation of the intermediate compounds, please refer to the ESI. † The new compounds (P-1 and P-2) and the intermediates were characterized by 1 H NMR, 13 C NMR and HRMS.…”

Section: Methodsmentioning

confidence: 99%

“…Recently, perylenebisimide (PBI) and its derivatives have been widely applied to the areas of uorescence probe and intracellular uorescence imaging image, [1][2][3][4][5] organic photovoltaic devices, [6][7][8][9][10][11][12] charge transporting materials, [13][14][15][16][17][18] luminescent materials [19][20][21][22][23][24] and triplet photosensitizers [25][26][27][28][29][30][31][32] due to its excellent luminous performance, photo-stability and electronic transmission capacity. Traditional PBI dyes always show the strong absorption in visible region and with small Stokes shi (generally less than 60 nm).…”

Section: Introductionmentioning

confidence: 99%

Near infrared absorption/emission perylenebisimide fluorophores with geometry relaxation-induced large Stokes shift

Zhang

2020

RSC Adv.

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“…A stepwise reduction of the length of the alkoxy chains from dodecyl to butyl (two examples are PBI-51 and PBI-52 in Figure 9d) reveals nonyl as the minimum chain length required for monotropic columnar mesomorphism to occur, and dodecyl chains as the minimum length for enantiotropic mesomorphism to occur. [99,100] The monotropic columnar mesophases of derivatives with side-chains of 9 to 11 carbon atoms likely have rectangular structures (Col r ) based on preliminary XRD data. The dodecyl substituted PBI-50 gives the highest charge carrier mobility of 10 À 3 cm 2 V À 1 s À 1 for all derivatives measured by the space-charge-limited current method.…”

Section: Pbi-23mentioning

confidence: 99%

Columnar Mesomorphism of Board‐Shaped Perylene, Diketopyrrolopyrrole, Isoindigo, Indigo, and Quinoxalino‐Phenanthrophenazine Dyes

et al. 2021

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The properties of organic dyes depend as much on their intermolecular interactions as on their molecular structure. While it is generally predictable what supramolecular structure would be ideal for a specific application, the generation of specific supramolecular structures by molecular design and suitable processing methods remains to be a challenge. A versatile approach to different supramolecular structures has been the application of mesomorphism in conjunction with alignment techniques and self‐assembly at interfaces. Reviewed here is the columnar mesomorphism of board‐shaped dyes perylene, indigo, isoindigo, diketopyrrolopyrrole, and quinoxalinophenanthrophenazine. They generate a larger number of different supramolecular structures than conventional disc‐shaped (discotic) mesogens because of their non‐circular shape and directional intermolecular interactions. The mesomorphism of all but the perylene derivatives is systematically and comprehensively covered for the first time.

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Structure–property relationship in charge transporting behaviour of room temperature liquid crystalline perylenebisimides

Cited by 17 publications

References 46 publications

Alkyl‐Chain‐Separated Triphenybenzene ‐ Carbazole Conjugates and their Derived Polymers: Candidates for Sensory, Electrical and Optical Materials

Alkyl‐Chain‐Separated Triphenybenzene ‐ Carbazole Conjugates and their Derived Polymers: Candidates for Sensory, Electrical and Optical Materials

Near infrared absorption/emission perylenebisimide fluorophores with geometry relaxation-induced large Stokes shift

Columnar Mesomorphism of Board‐Shaped Perylene, Diketopyrrolopyrrole, Isoindigo, Indigo, and Quinoxalino‐Phenanthrophenazine Dyes

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