Molecular Packing in Self‐Assembled p‐n and n‐p‐n Heterostructure Co‐oligomers

Wan, Jun‐Hua; Li, Yibao; Ma, Zhenyu; Li, Tingcheng; Huang, Wei

doi:10.1002/cjoc.201090305

Cited by 6 publications

(4 citation statements)

References 41 publications

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“…Wan Jun-Hua et al have investigated the molecular packing structure in the self-assembled p-n diblock and n-p-n triblock heterostructure oligomers (6 and 7) which were based on thiophene and 1,3,4-oxadiazole. 27 The structures of 6 and 7 are shown in Scheme 2.…”

Section: Assembly Of Conjugated Oligomers 21 Effect Of the Backbone S...mentioning

confidence: 99%

Self-assembly of conjugated oligomers and polymers at the interface: structure and properties

Yang

Lei

2012

Nanoscale

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In this review, we give a brief account on the recent scanning tunneling microscopy investigation of interfacial structures and properties of π-conjugated semiconducting oligomers and polymers, either at the solid-air (including solid-vacuum) or at the solid-liquid interface. The structural aspects of the self-assembly of both oligomers and polymers are highlighted. Conjugated oligomers can form well ordered supramolecular assemblies either at the air-solid or liquid-solid interface, thanks to the relatively high mobility and structural uniformity in comparison with polymers. The backbone structure, substitution of side chains and functional groups can affect the assembling behavior significantly, which offers the opportunity to tune the supramolecular structure of these conjugated oligomers at the interface. For conjugated polymers, the large molecular weight limits the mobility on the surface and the distribution in size also prevents the formation of long range ordered supramolecular assembly. The submolecular resolution obtained on the assembling monolayers enables a detailed investigation of the chain folding at the interface, both the structural details and the effect on electronic properties. Besides the ability in studying the assembling structures at the interfaces, STM also provides a reasonable way to evaluate the distribution of the molecular weight of conjugated polymers by statistic of the contour length of the adsorbed polymer chains. Both conjugated oligomers and polymers can form composite assemblies with other materials. The ordered assembly of oligomers can act as a template to controllably disperse other molecules such as coronene or fullerene. These investigations open a new avenue to fine tune the assembling structure at the interface and in turn the properties of the composite materials. To summarize scanning tunneling microscopy has demonstrated its surprising ability in the investigation of the assembling structures and properties of conjugated oligomers and polymers. The information obtained could benefit the understanding of the elements affecting the film morphology and helps the optimization of device performance.

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Section: Assembly Of Conjugated Oligomers 21 Effect Of the Backbone S...mentioning

confidence: 99%

Self-assembly of conjugated oligomers and polymers at the interface: structure and properties

Yang

Lei

2012

Nanoscale

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“…The mass spectra of Schiff bases (1-4) were measured and the fragmentation routes for these compounds were suggested, as shown in schemes (1)(2)(3)(4) .with the parent peaks at m/z 304,266,380,341 respectively. Table (5) shows the import ions that appear in the spectra of these compounds.…”

Section: Mass Spectramentioning

confidence: 99%

“…Schiff bases have been widely investigated and become one of the research hotspots for a long period of time owing to their strong coordination capability and diverse biological activities, such as antibacterial, antitumor activities, etc. [1][2][3]. Many Schiff bases are known to be medicinally important and used to design medicinal compounds [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Some new Sulfonamide Schiff’s Bases and Study Their Gastroprotective Activity

2019

University of Thi-Qar Journal of Science

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Substituted sulfonamides were reacted with thiophene carbaldehydes and piperenal to form Schiff's bases. The structures of synthesized compounds were confirmed by their IR, 1 H NMR spectroscopic data and mass spectra.Different necrotizing agents (80% ethanol, 0.2 M NaOH and 25% NaCl) were used to induced gastric lesions. The compounds were given orally 30 min before the administration of necrotizing agents. The percentages for compounds to ulcer protective were calculated. Compound 4 was more effective than other compounds and omeprazole itself.Compound 1 was approximate equal to omeprazole activity, and after that compounds 3 and 2 respectively were less active.

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“…Several benzotriazole and 1,2,4-triazole derivatives represented an interesting class of heterocyclic compounds [26]. Numerous benzotriazoles, including 4-(1H-benzo-1,2,3-triazol-1-ylmethyl-oxy)-3-methoxybenzalde, showed high effectiveness against human breast carcinoma cells (MCF7) [27].…”

Section: Introductionmentioning

confidence: 99%

Discovery of NewS‐Glycosides andN‐Glycosides of Pyridine‐biphenyl System with Antiviral Activity and Induction of Apoptosis inMCF7 Cells

Khodair

Attia

Gendy

et al. 2019

Journal of Heterocyclic Chem

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Glycosylation of small molecule‐based drugs can dramatically improve the biological activities of the parent scaffold. In the current study, S‐glycosides and N‐glycosides of polyfunctionalized pyridine‐biphenyl system tethered with benzotriazole moiety were designed and synthesized. S‐Glycosides of pyridine‐2‐thione derivatives 5a–h and N‐glycosides of pyridine‐2‐one derivatives 9a,b were synthesized by a facile, convenient, and high‐yielding procedure. The epimers glucose and galactose, acetylated or deacetylated, were used to form the glycone part. The structures of these compounds were confirmed by microanalysis and spectroscopic data (IR, 1H–NMR, and 13C‐NMR). The anticancer activities of the target compounds, in comparison with standard cisplatin, were assessed by MTT assay against MCF7 cell line. Compounds 4f, 4g, 5f, and 5h exhibited the highest cytotoxic effect on MCF7. The anticancer effect of these four compounds induced the apoptosis as evident by the up‐regulated expression of the apoptotic genes Bax and p53 and down‐regulated expression of the anti‐apoptotic gene BCl2. S‐Glycoside derivatives are more active than N‐glycosides. Moreover, the nontoxic doses of the tested compounds were evaluated in MA104, FRHK4, BGM, Hep2, and Vero cells. Compounds 4a–d and 5a–d were also evaluated for their antiviral effect against HSV‐1, HAV, and rotavirus Wa strain. The compounds' results showed less, moderated, and high antiviral activities. The docking study for these compounds with MDM2 revealed that deacetylated galactose is important for binding with the receptor as it facilitates the formation of hydrogen bond in the receptor. Rapid overlay of chemical structures analysis was employed to understand the compounds' similarity on the basis of their shape structure using the Tanimoto scores.

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Molecular Packing in Self‐Assembled p‐n and n‐p‐n Heterostructure Co‐oligomers

Cited by 6 publications

References 41 publications

Self-assembly of conjugated oligomers and polymers at the interface: structure and properties

Self-assembly of conjugated oligomers and polymers at the interface: structure and properties

Synthesis of Some new Sulfonamide Schiff’s Bases and Study Their Gastroprotective Activity

Discovery of NewS‐Glycosides andN‐Glycosides of Pyridine‐biphenyl System with Antiviral Activity and Induction of Apoptosis inMCF7 Cells

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