- One-pot synthesis of benzofluorene fused aromatic hydrocarbons
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A new and efficient synthetic approach for the one-pot construction of benzofluorene fused aromatic hydrocarbons was developed via a transient-directing group strategy. The palladium-catalyzed cascade reaction proceeded via consecutive arylation, cyclization and aromatization steps. Moderate to good yields along with broad functional group tolerance were achieved under mild reaction conditions.
- Dong, Wendan,Hu, Zhun,Wang, Ziqi,Sun, Bing,Zhang, Xueqiong,Zhang, Fang-Lin
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- APEX Strategy Represented by Diels–Alder Cycloadditions—New Opportunities for the Syntheses of Functionalised PAHs
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Diels–Alder cycloaddition of various dienophiles to the bay region of polycyclic aromatic hydrocarbons (PAHs) is a particularly effective and useful tool for the modification of the structure of PAHs and thereby their final properties. The Diels–Alder cycloaddition belongs to the single-step annulative π-extension (APEX) reactions and represents the maximum in synthetic efficiency for the constructions of π-extended PAHs including functionalised ones, nanographenes, and π-extended fused heteroarenes. Herein we report new applications of the APEX strategy for the synthesis of derivatives of 1,2-diarylbenzo[ghi]perylene, 1,2-diarylbenzo[ghi]perylenebisimide and 1,2-disubstituted-benzo[j]coronene. Namely, the so far unknown cycloaddition of 1,2-diarylacetylenes into the perylene and perylenebisimide bay regions was used. 1,2-Disubstituted-benzo[j]coronenes were obtained via cycloaddition of benzyne into 1,2-diarylbenzo[ghi]perylenes by using a new highly effective system for benzyne generation and/or high pressure conditions. Moreover, we report an unprecedented Diels–Alder cycloaddition–cycloaromatisation domino-type reaction between 1,4-(9,9-dialkylfluoren-3-yl)-1,3-butadiynes and perylene. The obtained diaryl-substituted core-extended PAHs were characterised by DFT calculation as well as electrochemical and spectroscopic measurements.
- Kurpanik, Aneta,Matussek, Marek,Szafraniec-Gorol, Gra?yna,Filapek, Micha?,Lodowski, Piotr,Marcol-Szumilas, Beata,Ignasiak, Witold,Ma?ecki, Jan Grzegorz,Machura, Barbara,Ma?ecka, Magdalena,Danikiewicz, Witold,Pawlus, Sebastian,Krompiec, Stanis?aw
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supporting information
p. 12150 - 12157
(2020/09/01)
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- Fluorene ethylene derivatives and synthesis method thereof
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The invention discloses fluorene ethylene derivatives and a synthesis method thereof; acetyl is generated on fluorene groups by a Fourier reaction, and after reduction is performed, a double bond is obtained through a toluene distillation dehydration method. The fluorene groups are coupled by a Sonogashira method. Monomers of the fluorene ethylene derivatives are used for obtaining a large number of semiconductor polymers with different properties through homopolymerization, copolymerization and other methods, and have quite high scientific research value and application prospects.
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Paragraph 0029; 0047; 0048
(2017/10/03)
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- DYE COMPOUND AND PHOTOELECTRIC COMPONENT USING THE SAME
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The present invention relates to a dye compound represented by the following formula (I), or a salt thereof: wherein R1, R2, R3, R4, D1, D2, B, and n are defined the same as the specification, and also relates to a photoelectric component using the same. The dye compound of the present invention is suitable for Dye-Sensitized Solar Cell (DSSC). Hence, the photoelectric characteristics of the DSSC can be improved by using the dye compound of the present invention.
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Page/Page column 7; 12
(2012/03/10)
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- Dye compound and photoelectric component using the same
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The present invention relates to a dye compound represented by the following formula (I), or a salt thereof: wherein R1, R2, R3, R4, D1, D2, B, and n are defined the same as the specification, and also relates to a photoelectric component using the same. The dye compound of the present invention is suitable for Dye-Sensitized Solar Cell (DSSC). Hence, the photoelectric characteristics of the DSSC can be improved by using the dye compound of the present invention.
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- DYE-SENSITIZED PHOTOELECTRIC CONVERSION DEVICE
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Disclosed is a photoelectric conversion device wherein a methine dye represented by the formula (1) below is supported by a thin film of oxide semiconductor particles arranged on a substrate. Also disclosed is a solar cell manufactured by using such a photoelectric conversion device. (In the formula (1), n represents an integer of 0-5; m represents an integer of 0-5; R1-R4 independently represent a hydrogen atom, an optionally substituted aromatic residue, an optionally substituted aliphatic hydrocarbon residue or the like; X and Y independently represent a hydrogen atom; an optionally substituted aromatic residue, an optionally substituted aliphatic hydrocarbon residue or the like; Z represents an oxygen atom, a sulfur atom or the like; A1, A2, A3, A4 and A5 independently represent a hydrogen atom, an optionally substituted aromatic residue, an optionally substituted aliphatic hydrocarbon residue or the like; and rings a, b and c may be substituted.)
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Page/Page column 51
(2008/12/08)
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