Enhanced fluorescence in both solution and solid state for perylene liquid crystals with six peripheral alkyl substituents on 1,6,7,12-bay positions and imides positions

Zhu, Mingguang; Zhuo, Youzhen; Guo, Hongyu; Yang, Fafu; Qiu, Jiabin

doi:10.1016/j.jlumin.2017.10.049

Cited by 28 publications

(17 citation statements)

References 44 publications

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“…TCl‐PDI was synthesized according to our previously reported method . The four chlorines on the bay of perylene core serve as electron‐withdrawing units to decrease the electron cloud density of the conjugate system (Figure a).…”

Section: Resultsmentioning

confidence: 99%

“…TCl-PDI was synthesized according to our previously reported method. [52] The four chlorines on the bay of perylenec ore serve as electron-withdrawing units to decrease the electron cloud density of the conjugate system ( Figure 1a). As an ew ETM for PVSCs, we first checked its absorption, thermostability, and electrochemical and charge-transportingc haracteristics.…”

Section: Resultsmentioning

confidence: 99%

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Perylene Diimide‐Based Electron‐Transporting Material for Perovskite Solar Cells with Undoped Poly(3‐hexylthiophene) as Hole‐Transporting Material

et al. 2019

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Perylene diimide‐based small molecules are widely used as intermediates of liquid crystals, owing to their high planarity and electron mobility. In this study, tetrachloroperylene diimide (TCl‐PDI) was used as a small‐molecule replacement for TiO2 as electron‐transporting material (ETM) for planar perovskite solar cells (PVSCs). Among hole‐transporting materials (HTMs) for PVSCs, poly(3‐hexylthiophene) (P3HT) gives the devices the highest stability and reproducibility. Therefore, PVSCs with the structure of indium tin oxide (ITO)/ETM/perovskite/P3HT/MoO3/Ag were used to evaluate the performances of new ETMs. A reference device with compact TiO2 and P3HT gave a reasonable power conversion efficiency (PCE) of 12.78 %, whereas the PVSC with TCl‐PDI as ETM gave an enhanced PCE of 14.73 %, which is among the highest reported values for PVSCs with undoped P3HT as the HTM. Moreover, TCl‐PDI‐based devices displayed higher stability than those based on compact TiO2, owing to the superior perovskite quality.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Perylene Diimide‐Based Electron‐Transporting Material for Perovskite Solar Cells with Undoped Poly(3‐hexylthiophene) as Hole‐Transporting Material

et al. 2019

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“…The presence of trisubstituted alkyl chain length decreased the aggregation-caused quenching effect and enhanced the fluorescence intensity. 65…”

Section: Resultsmentioning

confidence: 99%

New Class of Supramolecular Bowl-Shaped Columnar Mesogens Derived from Thiacalix[4]arene Exhibiting Gelation and Organic Light-Emitting Diodes Applications

Sharma¹,

Sharma

Shah

et al. 2019

ACS Omega

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A new class of blue light-emitting bowl-shaped mesogens with the thiacalix[4]arene core appended with 1,3,4-thiadiazole derivatives having peripheral alkoxy side chains have been synthesized and well characterized. The liquid crystalline behavior of present synthesized derivatives was examined by optical polarizing microscopy, differential scanning calorimetry, and X-ray diffraction studies. It was observed that these thiacalix[4]arene derivatives were capable of stabilizing the observed Colh phase with a higher temperature range. The cone-shaped thiacalix[4]arene-based liquid crystals with peripheral alkoxy side chains able to pack into the columns with enriched intermolecular interactions and thermal behavior. All derivatives showed blue luminescence in solution, solid thin-film, and gelation state. The hexagonal columnar phase and emissive nature of thiadiazole-based thiacalixarene compounds having xerogel behavior make them favorable in the application of emissive electronic display devices. The electrochemical properties of these thiacalixarene-based compounds demonstrate the effect of alkyl side chain on the highest occupied molecular orbital–lowest unoccupied molecular orbital energy levels and also exhibited lower electron band gaps. The electroluminescence behavior of the compound 10c was examined as emissive layers in the fabrication of organic light-emitting diodes.

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“…In the presence of K 2 CO 3 , the red solid of nal compound was obtained by re uxing compound 1 and 2 in Figure S1, one can the clear splits for aromatic proton of uorescein units but broad signals for aromatic protons of nonylphenoxy and perylene skeleton. After examining the proton signals of same skeleton of compound 3, its precursor 1 and reference compounds 4 and 5, we noticed all of them showed the broad signals for the H a , H b and H c [43,44]. The phenomena suggested that this kind of broad signals for the H a , H b and H c could be ascribed to internal structural features for these compounds.…”

Section: Synthesis and Characterizationmentioning

confidence: 88%

Fluorescein-Bridged Perylene Bisimide Dimer for Use as Liquid Crystal: Studies on Mesomorphic and Fluorescence Properties

Zhu

Chen

Guo

et al. 2021

Preprint

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A novel fluorescein-bridged perylene bisimide (PBI) dimer for liquid crystal (LC) with geometrically symmetric structure was developed. The mesomorphic results indicated that the energetically stable and unstable conformers of fluorescein fragments could lead to the transformation of mesophases from a hexagonal columnar mesophase to an uncertain phase at 136.9 °C in heating, whilst a stable hexagonal columnar mesophase maintained between 175.6 °C and 58.6 °C in cooling. The selectively excited fluorescence characters in THF solution demonstrated that the fluorescence resonance energy transfer (FRET) effect between fluorescein fragments and PBI unites could provide a means to effectively impose strong fluorescence of the dimeric PBIs modified with suitable chromophore at the N-imide position, which alternatively serves as a platform for the further study of multi-functional PBI-based LCs.

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Enhanced fluorescence in both solution and solid state for perylene liquid crystals with six peripheral alkyl substituents on 1,6,7,12-bay positions and imides positions

Cited by 28 publications

References 44 publications

Perylene Diimide‐Based Electron‐Transporting Material for Perovskite Solar Cells with Undoped Poly(3‐hexylthiophene) as Hole‐Transporting Material

Perylene Diimide‐Based Electron‐Transporting Material for Perovskite Solar Cells with Undoped Poly(3‐hexylthiophene) as Hole‐Transporting Material

New Class of Supramolecular Bowl-Shaped Columnar Mesogens Derived from Thiacalix[4]arene Exhibiting Gelation and Organic Light-Emitting Diodes Applications

Fluorescein-Bridged Perylene Bisimide Dimer for Use as Liquid Crystal: Studies on Mesomorphic and Fluorescence Properties

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