Articles with "end groups" as a keyword



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Asymmetric Substitution of End‐Groups Triggers 16.34% Efficiency for All‐Small‐Molecule Organic Solar Cells

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Published in 2022 at "Advanced Materials"

DOI: 10.1002/adma.202202752

Abstract: Asymmetric substitution of end‐groups is first applied in molecular donors. Three commonly used end‐groups of 2‐ethylhexyl cyanoacetate (CA), 2‐ethylhexyl rhodanine (Reh), and 1H‐indene‐1,3(2H)‐dione (ID) are combined to construct a series of symmetric and asymmetric donors.… read more here.

Keywords: reh; end groups; groups triggers; end ... See more keywords
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Telechelic, Antimicrobial Hydrophilic Polycations with Two Modes of Action.

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Published in 2018 at "Macromolecular bioscience"

DOI: 10.1002/mabi.201700389

Abstract: Telechelic antimicrobial poly(2-oxazoline)s with quaternary ammonium (quat) end groups are shown to be potent antimicrobial polymers against Gram-positive bacterial strains. In this study, the activity against the Gram-negative bacterium Escherichia coli is additionally implemented by… read more here.

Keywords: antimicrobial hydrophilic; telechelic antimicrobial; quart end; end groups ... See more keywords
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Rational design of naphthalimide based small molecules non-fullerene acceptors for organic solar cells

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Published in 2020 at "Computational and Theoretical Chemistry"

DOI: 10.1016/j.comptc.2020.112916

Abstract: Abstract To explore optical electronic and charge transfer properties, a series of D-π-A type of molecules with central core of 9,9-dimethyl-9H-fluorene as donor linked by 6-fluoro-4-(prop-1-yn-1-yl)benzo[1,2,5]thiadiazole as π-bridge to variable end group acceptor materials have… read more here.

Keywords: organic solar; designed molecules; end; rational design ... See more keywords
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Non-fullerene electron acceptors constructed by four strong electron-withdrawing end groups: Potential to improve the photoelectric performance of organic solar cells by theoretical investigations

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Published in 2020 at "Dyes and Pigments"

DOI: 10.1016/j.dyepig.2020.108542

Abstract: Abstract Recent advances in non-fullerene acceptors have enabled the power conversion efficiencies of organic solar cells (OSCs) to exceed 16%. Fused-ring electron acceptors (FREAs) are some of the most widely investigated non-fullerene acceptors. Classical FREAs,… read more here.

Keywords: electron withdrawing; non fullerene; strong electron; end groups ... See more keywords
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Photophysical properties of soluble light-harvesting polyhydrofurans from post-polymerization functionalization of polyketones

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Published in 2021 at "European Polymer Journal"

DOI: 10.1016/j.eurpolymj.2021.110302

Abstract: Abstract Soluble polyhydrofurans with chromophoric end-groups have been synthesized via post-polymerization modifications of polyketones. The absorption intensity in solution and molecular weight were controlled by manipulation of reaction time after addition of HBr gas, and… read more here.

Keywords: properties soluble; photophysical properties; post polymerization; end groups ... See more keywords
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Fluorenone-based molecules for resistive memory devices: Tuning memory behavior by adjusting end groups

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Published in 2020 at "Synthetic Metals"

DOI: 10.1016/j.synthmet.2020.116431

Abstract: Abstract Three aryl vinyl terminated 9-fluorenone compounds (pMe-DEPFO, DEPFO and F5-DEPFO) were designed and synthesized. The single crystal structure of pMe-DEPFO shows that the molecule has a good planarity and packs orderly, which is crucial… read more here.

Keywords: depfo; memory behavior; memory; end groups ... See more keywords
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Modular Synthetic Approach for Adjusting the Disassembly Rates of Enzyme-Responsive Polymeric Micelles.

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Published in 2017 at "Biomacromolecules"

DOI: 10.1021/acs.biomac.6b01906

Abstract: Self-assembled nanostructures and their stimuli-responsive degradation have been recently explored to meet the increasing need for advanced biocompatible and biodegradable materials for various biomedical applications. Incorporation of enzymes as triggers that can stimulate the degradation… read more here.

Keywords: modular synthetic; enzyme responsive; approach adjusting; end groups ... See more keywords
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Nitro End Groups: Remarkable Vibrational Reporters for Charge Transfer in the Excited States of Oligo(p-phenyleneethynylene)-Bridged Donor–Acceptor Dyads

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Published in 2020 at "Journal of Physical Chemistry C"

DOI: 10.1021/acs.jpcc.0c01532

Abstract: The D-π-A dyads [(n-Hex)2N(1,4-C6H4)]C≡C[(1,4-C6H4)NO2] (1) and [(n-Hex)2N(1,4-C6H4)]C≡C(1,4-C6H4)C≡C[(1,4-C6H4)NO2] (2) have been studied by ultrafast time-resolved infrared absorption spectroscop... read more here.

Keywords: remarkable vibrational; c6h4; groups remarkable; c6h4 c6h4 ... See more keywords
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Simultaneous Tuning of Alkyl Chains and End Groups in Non-fused Ring Electron Acceptors for Efficient and Stable Organic Solar Cells.

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Published in 2022 at "ACS applied materials & interfaces"

DOI: 10.1021/acsami.2c03723

Abstract: Fine-tuning the alkyl chains and end groups of non-fused ring electron acceptors (NFREAs) plays vital roles in the promotion of charge transfer (CT) and power conversion efficiency (PCE). In this work, we developed a series… read more here.

Keywords: chains end; alkyl chains; end groups; groups non ... See more keywords
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Perylene Diimide-Fused Dithiophenepyrroles with Different End Groups as Acceptors for Organic Photovoltaics.

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Published in 2022 at "ACS applied materials & interfaces"

DOI: 10.1021/acsami.2c06135

Abstract: In this study, we synthesized four new A-DA'D-A acceptors (where A and D represent acceptor and donor chemical units) incorporating perylene diimide units (A') as their core structures and presenting various modes of halogenation and… read more here.

Keywords: acceptor; end groups; groups acceptors; perylene diimide ... See more keywords
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Incorporation of Radicals during Ni(II)-Catalyzed Ethylene Insertion Polymerization

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Published in 2019 at "ACS Catalysis"

DOI: 10.1021/acscatal.8b04707

Abstract: A possible involvement of radicals in catalytic insertion chain growth remains elusive, albeit it could account for thus far inconclusive experimental observations and enable yet unachieved synthetic reaction schemes. This work shows that radicals present,… read more here.

Keywords: end; incorporation; insertion; catalyzed ethylene ... See more keywords