110126-93-7Relevant articles and documents
Green emitting PLED having polymeric host and dopant in emissive layer
Han, Yoon Soo,Kim, Hoyoung,Choi, Byeong Dae,Song, Jeong Han,Kwon, Younghwan,Hur, Youngjune,Kwak, Giseop,Kim, Soon Hak,Park, Lee Soon,Choi, Byeong-Dae
, p. 329 - 340 (2007)
Poly(1,1'-biphenyl-4,4'-ylene vinylene-alt-2,5-bis(2-ethylhexyl)-1,4- phenylene vinylene] [poly(BPV-alt-BEHPV)] as a polymeric dopant, was synthesized by Honer-Emmons condensation from corresponding dialdehyde and diphosphonate monomers. Synthesized alternating polymer was used to fabricate single layer (ITO/Host:Dopant/Al) PLEDs with poly(vinyl carbazole) (PVK) as a host. Conjugated poly(BPV-alt-BEHPV) showed green emission from single layer ITO/poly(BPV-alt-BEHPV)/Al device. Emission colors from doped PLEDs were changed by energy transfer from blue originated from PVK to green with increasing the content of poly(BPV-alt-BEHPV).
Conformational gating of long distance electron transfer through wire-like bridges in donor-bridge-acceptor molecules
Davis,Ratner,Wasielewski
, p. 7877 - 7886 (2001)
A series of five donor-bridge-acceptor (DBA) molecules in which the donor is tetracene, the acceptor is pyromellitimide, and the bridge molecules are oligo-p-phenylenevinylenes (OPV) of increasing length has been shown to undergo electron transfer (ET) by means of two mechanisms. When the bridge is short, strongly distance dependent superexchange dynamics dominates, whereas when the bridge is longer, bridge-assisted hopping dynamics prevails. The latter mechanism results in relatively soft distance dependence for ET in which the OPV oligomers act effectively as molecular wires. We now report studies on the critical influence that bridge dynamics have on electron transfer through these oligomers. The temperature dependence of the charge separation (CS) rates in all five molecules does not appear to obey the predictions of standard ET theories based upon the Condon approximation. All five molecules show behavior consistent with CS being "gated" by torsional motion between the tetracene donor and the first bridge phenyl ring. This is based on the near equivalence of the CS activation energies measured for all five molecules with the frequency of a known vibrational mode in 5-phenyltetracene. In the molecule containing a trans-stilbene bridge, a competition occurs between the tetracene-phenyl torsional motion and one that occurs between the vinyl group and the phenyls linked to it. This results in complex temperature-dependent CS that exhibits both activated and negatively activated regimes. The charge recombination (CR) reactions within the molecules which have the two shortest bridges, namely phenyl and trans-stilbene, show a weaker dependence on these molecular motions. The three molecules with the longest bridges all display complex temperature dependencies in both their rates of CS and CR, most likely because of the complex torsional motions, which arise from the multiple phenyl-vinyl linkages. The data show that long-distance electron transfer and therefore wire-like behavior within conjugated bridge molecules depend critically on these low-frequency torsional motions. Molecular device designs that utilize such bridges will need to address these issues.
Polytriazole bridged with 2,5-diphenyl-1,3,4-oxadiazole moieties: A highly sensitive and selective fluorescence chemosensor for Ag+
Cao, Shoupeng,Pei, Zhichao,Xu, Yongqian,Zhang, Ruina,Pei, Yuxin
, p. 45888 - 45896 (2015)
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
π-Conjugate Fluorophore-Tagged and Enzyme-Responsive l -Amino Acid Polymer Nanocarrier and Their Color-Tunable Intracellular FRET Probe in Cancer Cells
Saxena, Sonashree,Jayakannan, Manickam
, p. 2594 - 2609 (2017)
The present investigation accounts one of the first example of enzyme-responsive and π-conjugate-tagged l-amino acid amphiphilic polymer and their fluorescence resonance energy transfer (FRET) probes for color-tunable intracellular bioimaging in cancer ce
MOLECULES AND OLIGOMERS FOR ENDOTHERMIC SINGLET FISSION
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Paragraph 0056; 0060, (2020/11/27)
The present disclosure relates to a composition that includes a repeat unit defined by where each of R1, R2, R3, R4, R5, R6, R7, and R8 includes at least one of a hydrogen atom, a fluorine atom, and/or a first hydrocarbon chain having between 1 and 20 carbon atoms, inclusively, where each of A1, A2, A3 and A4 are either a carbon atom or a nitrogen atom, when A1 is a nitrogen atom, A2 is a carbon atom, when A2 is a nitrogen atom, A1 is a carbon atom, when A3 is a nitrogen atom, A4 is a carbon atom, when A4 is a nitrogen atom, A3 is a carbon atom, either A1 or A2 form a covalent bond, x, with a carbon atom, a, either A3 or A4 form a covalent bond, y, with a carbon atom, b, L is a linker group that includes an aromatic ring, and n is between 1 and 20, inclusively.
Copolymers for iodide detection and methods thereof
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Page/Page column 6; 26, (2020/02/03)
Copolymers having thiophene based and vinylene based moieties. Methods of producing the copolymers, and methods of utilizing the copolymers as chromogenic sensors for selective detection of iodide anion are also provided.
Electrophoretic fluids
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Page/Page column 11; 13; 14; 15, (2019/07/29)
This invention relates to electrophoretic fluids, the use of these fluids for the preparation of an electrophoretic display device, and electrophoretic displays comprising such fluids.
Electrophoretic fluids
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Page/Page column 22-24, (2018/07/15)
This invention relates to electrophoretic fluids, the use of these fluids for the preparation of an electrophoretic display device, and electrophoretic displays comprising such fluids.
Based on nitrogen heterocyclic group of neutral cathode buffer layer polymer material and its preparation method, application
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Paragraph 0047-0049, (2017/09/26)
The invention discloses a neutral cathode buffer layer molecular type material based on N-heterocycle groups. An aromatic ring containing alkyl chains is used as the core of the neutral cathode buffer layer molecular type material, and the N-heterocycle g
Poly[(arylene ethynylene)-alt-(arylene vinylene)]s Based on Anthanthrone and Its Derivatives: Synthesis and Photophysical, Electrochemical, Electroluminescent, and Photovoltaic Properties
John, Suru Vivian,Cimrová, Věra,Ulbricht, Christoph,Pokorná, Veronika,Ru?i?ka, Ale?,Giguère, Jean-Benoit,Lafleur-Lambert, Antoine,Morin, Jean-Fran?ois,Iwuoha, Emmanuel,Egbe, Daniel Ayuk Mbi
, p. 8357 - 8371 (2017/11/21)
Anthanthrone and its derivatives are large polycyclic aromatic compounds (PACs) that pose a number of challenges for incorporation into the structure of soluble conjugated polymers. For the first time, this group of PACs was employed as the building blocks for the synthesis of copolymers (P1-P5) based on poly[(arylene ethynylene)-alt-(arylene vinylene)]s backbone (-Ph-C=C-Anth-C=C-Ph-CH - CH-Ph-CH - CH-)n. During the synthesis of P1-P5, different alkyloxy side chains were incorporated in order to tune the properties of the polymers. Of the copolymer series only P1 (containing anthanthrone and branched 2-ethylhexyloxy side chains on phenylenes), P2 and P3 (for which the anthanthrones containing carbonyl groups were converted to anthanthrene containing alkyloxy substituents) were soluble. The photophysical, electrochemical, electroluminescent and photovoltaic properties of P1-P3 are reported, compared and discussed with respect to the effects of side chains.