Articles with "ladder type" as a keyword



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Spiro‐Bridged Ladder‐Type Oligo(para‐phenylene)s: Fine Tuning Solid State Structure and Optical Properties

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Published in 2017 at "Advanced Functional Materials"

DOI: 10.1002/adfm.201704077

Abstract: A set of ladder-type quaterphenyls with an incremental number of spiro-bifluorene units in the bridge positions as well as an in-plane bent quaterphenyl carrying all bridges on one and the same side of the ribbon… read more here.

Keywords: solid state; ladder type; state structure;
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Effects of finite bandwidth on atomic grating in a three level ladder type system

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Published in 2020 at "Optics Communications"

DOI: 10.1016/j.optcom.2020.125881

Abstract: Abstract In this paper, we study the atomic grating produced by a three-level ladder type system which interacts with a strong standing microwave drive field of finite bandwidth. The upper levels of the atoms are… read more here.

Keywords: field; level ladder; three level; drive field ... See more keywords
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Single-strand and ladder-type polymeric acceptors based on regioisomerically-pure perylene diimides towards all-polymer solar cells

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Published in 2019 at "Polymer"

DOI: 10.1016/j.polymer.2018.12.041

Abstract: Abstract Since dibromo perylene diimides (DBPDIs) contain two isomers that are difficult to separate, isomeric effect on properties and applications of PDI polymers has been rarely studied. Few ladder-type polymers have been used in organic… read more here.

Keywords: solar cells; regioisomerically pure; polymer solar; ladder type ... See more keywords
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Ladder-Type Dithienonaphthalene-Based Small-Molecule Acceptors for Efficient Nonfullerene Organic Solar Cells

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Published in 2017 at "Chemistry of Materials"

DOI: 10.1021/acs.chemmater.7b02887

Abstract: Two novel small molecule acceptors (DTNIC6 and DTNIC8) based on a ladder-type dithienonaphthalene (DTN) building block with linear (hexyl) or branched (2-ethylhexyl) alkyl substituents are designed and synthesized. Both acceptors exhibit strong and broad absorption… read more here.

Keywords: organic solar; molecule acceptors; type dithienonaphthalene; small molecule ... See more keywords
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In Situ Spectroscopic and Electrical Investigations of Ladder-type Conjugated Polymers Doped with Alkali Metals

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Published in 2022 at "Macromolecules"

DOI: 10.1021/acs.macromol.2c01190

Abstract: Ladder-type conjugated polymers exhibit a remarkable performance in (opto)electronic devices. Their double-stranded planar structure promotes an extended π-conjugation compared to inter-ring-twisted analogues, providing an excellent basis for exploring the effects of charge localization on polaron… read more here.

Keywords: spectroscopy; type conjugated; situ spectroscopic; conjugated polymers ... See more keywords
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Synthesis and Characterization of Functionalizable Silsesquioxanes with Ladder-type Structures

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Published in 2019 at "Organometallics"

DOI: 10.1021/acs.organomet.9b00597

Abstract: Novel tetravinyl- and tetraallyl-substituted laddersiloxanes were synthesized and characterized. It was shown that peripheral olefins could successfully undergo hydrosilylation quantitatively, poss... read more here.

Keywords: silsesquioxanes ladder; type structures; characterization functionalizable; ladder type ... See more keywords
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Effective Synthesis of Ladder-type Oligo(p-aniline)s and Poly(p-aniline)s via Intramolecular SNAr Reaction.

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Published in 2021 at "Organic letters"

DOI: 10.1021/acs.orglett.1c00363

Abstract: Symmetric ladder-type oligo(p-aniline)s and poly(p-aniline)s were successfully synthesized by an intramolecular ring closure in a highly efficient SNAr reaction from oligo(p-phenylene)s and poly(p-phenylene)s with fluorine (F) and secondary amine (NH) groups. Unlike Cadogan ring closure,… read more here.

Keywords: aniline; type oligo; aniline poly; reaction ... See more keywords
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Synthesis of Ladder-Type 9,9'-Bifluorenylidene-Based Conjugated Oligomers via a Pd-Catalyzed Tandem Suzuki Coupling/Heck Cyclization Approach.

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Published in 2022 at "Organic letters"

DOI: 10.1021/acs.orglett.2c02418

Abstract: For new ladder-type oligomers and polymers with versatile and robust synthetic strategies, in this study, four fully conjugated ladder-type overcrowded 9,9'-bifluorenylidene-based compounds and oligomers (BFY1, BFY2, BFY3, and BFY4) were synthesized via a Pd-catalyzed tandem… read more here.

Keywords: bifluorenylidene based; spectroscopy; via catalyzed; ladder ... See more keywords
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The Crucial Role of Fluorine in Fully Alkylated Ladder Type Carbazole Based Non-fullerene Organic Solar Cells.

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Published in 2020 at "ACS applied materials & interfaces"

DOI: 10.1021/acsami.0c00981

Abstract: Two fused ladder type non-fullerene acceptors, DTCCIC and DTCCIC-4F, based on an electron-donating alkylated dithienocyclopentacarbazole core flanked by electron-withdrawing non-fluorinated or fluorinated 1,1-dicyanomethylene-3-indanone (IC or IC-4F), are prepared and utilized in organic solar cells (OSCs).… read more here.

Keywords: organic solar; based non; non fullerene; ladder type ... See more keywords
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A Ladder-type Heteroheptacene 12H-Dithieno[2',3':4,5]thieno[3,2-b:2',3'-h]fluorene Based D-A Copolymer with Strong Intermolecular Interactions toward Efficient Polymer Solar Cells.

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Published in 2017 at "ACS applied materials & interfaces"

DOI: 10.1021/acsami.7b12142

Abstract: Ladder-type electron-donating units for D-A copolymers applied in polymer solar cells usually comprise multiple tetrahedral carbon bridges bonded with out-of-plane alkyl chains for desirable solubility for device processing. However, molecular packing of resultant copolymers in… read more here.

Keywords: copolymer; polymer solar; heteroheptacene 12h; 12h dithieno ... See more keywords
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Si-Bridged Ladder-Type Small-Molecule Acceptors for High-Performance Organic Photovoltaics.

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Published in 2019 at "ACS applied materials & interfaces"

DOI: 10.1021/acsami.8b17753

Abstract: In this study, we synthesized 5,11-dihexyl-4,4,10,10-tetraoctylbenzo[1,2- b:4,5- b']bisthieno[4″,5″- b″:4‴,5‴- b‴]silolo[2″,3″- d:2‴,3‴- d']thiophene (ArSi) as a ladder-type electron-rich core for the preparation of three acceptor-donor-acceptor-type nonfullerene acceptors (NFAs)-ArSiID, ArSiID-F, and ArSiID-Cl-featuring (3-oxo-2,3-dihydro-1 H-inden-1-ylidene)malononitrile (ID), 2-(5,6-difluoro-3-oxo-2,3-dihydro-1 H-inden-1-ylidene)malononitrile… read more here.

Keywords: oxo dihydro; inden ylidene; dihydro inden; ylidene malononitrile ... See more keywords