- A hybridized local and charge transfer excited state for solution-processed non-doped green electroluminescence based on oligo(: p -phenyleneethynylene)
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We herein report a new highly efficient green emissive hot-exciton molecule, 1,4-bis((4′-diphenylamino-3-cyano-[1,1′-biphenyl]-4-yl)ethynyl)-2,5-bis(2-ethylhexyloxy)benzene (2EHO-TPA-CNPE) that consists of an extended D′-π′-A-π-D-π-A-π′-D′ molecular π-sys
- Alimli, Dilek,Alkan, Fahri,Altas, Ahu Galen,Can, Ayse,Dabak, Salih,Gürek, Ay?e Gül,Kacar, Rifat,Mutlugun, Evren,Ozdemir, Resul,Tekin, Emine,Usta, Hakan,Yazici, Ahmet Faruk
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supporting information
p. 8047 - 8060
(2020/07/15)
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- CYANO-DERIVATIZED OLIGONOPHENYLACETYLENE-BASED FLUORESCENT SMALL MOLECULES SUITABLE FOR USE IN ORGANIC LIGHT-EMITTING DIODE APPLICATIONS AND THEIR USE IN ORGANIC LIGHT-EMITTING DIODE APPLICATIONS
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The present invention relates to the synthesis of oligonophenylacetylene-based fluorescent π-conjugated small molecules, which are derivatized with group or groups of cyano (-CN) and have the ability to emit light with very sharp emission peaks at differe
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Page/Page column 3; 8
(2019/12/28)
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- A new rod-shaped BODIPY-acetylene molecule for solution-processed semiconducting microribbons in n-channel organic field-effect transistors
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BODIPY-based π-conjugated small molecules have been extensively studied in various fields of sensing and biochemical labelling; however, their use in organic optoelectronic applications is very limited. A new solution-processable acceptor-donor-acceptor (
- Ozdemir, Mehmet,Choi, Donghee,Zorlu, Yunus,Cosut, Bunyemin,Kim, Hyungsug,Kim, Choongik,Usta, Hakan
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p. 6232 - 6240
(2017/07/17)
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- Polytriazole bridged with 2,5-diphenyl-1,3,4-oxadiazole moieties: A highly sensitive and selective fluorescence chemosensor for Ag+
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Fluorescent conjugated polytriazoles (FCP 1-4) containing both 2,5-diphenyl-1,3,5-oxadiazole (OXD) and 1,2,3-triazole moieties in the main chain were synthesized from aromatic diazide (1) and dialkynes (2-5) via click polymerization, respectively. In the polymers, OXDs (fluorophores) and triazole rings (generated via CuAAC acting as metal ion ligands) comprise a fluorescent system. The polytriazoles displayed relatively strong emission with quantum yields in the range of 0.20-0.28 at room temperature in DMF. The study on their ion-responsive properties showed that, although all four FCPs have good selectivity for Ag+, the integration of alkoxy side groups (methoxy for FCP 2, hexyloxy for FCP 3 and 2-ethylhexyloxy for FCP 4) to the main chains of the polytriazoles decreased their sensitivity for Ag+via alteration of the polymer aggregation status and electron density of the main chains. Thus FCP 1 is highly sensitive for Ag+, where its Ksv is as high as 1.44 × 105 M-1 and its lowest detection limit is in the ppb range (4.22 × 10-7 M). This study provides an efficient click approach to the synthesis of a novel fluorescence sensor for Ag+ detection, which could expand the application of click polymerization in designing fluorescence sensors based on the triazole unit. This journal is
- Cao, Shoupeng,Pei, Zhichao,Xu, Yongqian,Zhang, Ruina,Pei, Yuxin
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p. 45888 - 45896
(2015/06/08)
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- Fluorescent conjugated polymer nanoparticles by polymerization in miniemulsion
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Highly fluorescent conjugated polymer nanoparticles were prepared directly by polymerization in aqueous miniemulsion, employing Glaser coupling polymerization as a suitable step-growth reaction. A 4,4′-dinonyl-2, 2′-bipyridine-modified catalyst was found to be suited for the polymerization in the aqueous heterophase system. Nanoparticles of poly(arylene diethynylenes) (arylene = 2,5-dialkyoxy phenylenes and 9,9′-dihexyl fluorene) with molecular weights in the range of Mn 104 to 105 g mol-1 and with sizes of ≤30 nm, as observed by TEM, result. N,N′-Di(4-ethynylphenyl)-1,7-di[4-(1,1,3,3-tetramethylbutyl) phenoxy]-perylene-3,4:9,10-tetracarboxdiimide or 2,7-diethynylfluorenone was converted completely during the heterophase polymerization to afford colloidally stable nanoparticles of poly(arylene diethynylenes) with 0.1-2 mol % covalently incorporated perylene dye and 2-9 mol % of covalently incorporated fluorenone dye, respectively. Fluorescence spectroscopy of the aqueous dispersions reveals an efficient energy transfer to the dye in the nanoparticles, which enables a variation of the luminescence emission color between red (λem (max.) ca. 650 nm) and the green emission of the nanoparticles without dye.
- Baier, Moritz C.,Huber, Johannes,Mecking, Stefan
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supporting information; experimental part
p. 14267 - 14273
(2010/02/15)
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- Methano[10]annulene revisited: Extended delocalization through conjugated polymers bearing larger Hueckel aromatics
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A comparative study of conjugated polymers derived from the two 10 π electron circuits of naphthalene and methano [10]annulene is presented. The annulene π topology allows for a greater degree of intrapolymer charge delocalization, a key structural parame
- Peart, Patricia A.,Tovar, John D.
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p. 3041 - 3044
(2008/02/09)
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- Side chain effects in hybrid PPV/PPE polymers
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The Horner-Wadsworth-Emmons olefination reaction of luminophoric dialdehydes 1 and 2 and bisphosphonates 3 provide high-molecular-weight and thermostable PPV/PPE hybrid polymers 4 and 5 of well-defined general constitutional structure -(CH=CH-Ph-CH=CH-Ph-
- Egbe, Daniel Ayuk Mbi,Roll, Carsten Peter,Birckner, Eckhard,Grummt, Ulrich-Walter,Stockmann, Regina,Klemm, Elisabeth
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p. 3825 - 3837
(2007/10/03)
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