13922-41-3Relevant articles and documents
Oil-in-water microemulsion: An effective medium for triplet-triplet annihilated upconversion with efficient triplet acceptors
Ye, Changqing,Wang, Bao,Hao, Roukang,Wang, Xiaomei,Ding, Ping,Tao, Xutang,Chen, Zhigang,Liang, Zuoqin,Zhou, Yuyang
, p. 8507 - 8514 (2014)
The oil-in-water (o/w) microemulsion containing bimolecular system of acceptor (9,10-dinaphthylanthracene) and sensitizer (Pd(ii)tetratolylporphyrin), i.e., upconverted o/w microemulsion, was firstly reported for the triplet-triplet annihilated upconversion (TTA-UC) by temperature effects. The correlation between structure/up-conversion performance of three 9,10-dinaphthylanthracenes doped with Pd(ii)tetratolylporphyrin were investigated. Under excitation at an ultralow power density at 60 mW cm-2, the up-converted o/w microemulsion emits green-to-blue upconversion and an efficiency (ΦUC) increase is accompanied by an increase in temperature. The maximum ΦUCvalue for the upconverted o/w microemulsion obtained was as high as 33.12%, which is comparable to its counterpart in a pure organic solvent. Very importantly, there is no need for the upconverted o/w microemulsion to deaerate, which is of critical importance for applications such as upconversion-powered photoelectrochemistry. To the best of our knowledge, the current study represents a simple approach to obtain high TTA-UC without degassing.
Synthesis and photophysical processes of a novel 1,10-phenanthroline-containing p-conjugated chromophores and Zn(II) chelated complex
Zhang, Caihong,Feng, Liheng,Chen, Zhaobin
, p. 1204 - 1207 (2007)
A novel 1,10-phenanthroline-containing p-conjugated chromophore, 3,8-di-(1-naphthyl)-1,10-phenanthroline, was synthesized by Suzuki reaction and its chelated complex was prepared. The UV-visible spectroscopy and photoluminescent (PL) properties were investigated. The results show that when the solution of the complex in THF located in low concentration range (-6 mol/L), the fluorescence emission exhibit only one emission band and the excimer is formed with gradual increase in concentration of the complex. The emission spectra of the complex show obvious solvent effect. In addition, the intermolecular action between the complex and fullerene (C60) were investigated. The fluorescence intensity of the complex is decreased and the maximal emission obvious red-shifted with the increasing of the concentration of C60, which suggests that the strong interactions between the complex and C60 happen in the excited state.
Reaction of grignard reagents with diisopropylaminoborane. Synthesis of alkyl, aryl, heteroaryl and allyl boronic acids from organo(diisopropyl)- aminoborane by a simple hydrolysis
Bailey, Christopher L.,Murphy, Chris L.,Clary, Jacob W.,Eagon, Scott,Gould, Naomi,Singaram, Bakthan
, p. 331 - 341 (2012)
Diisopropylaminoborane (BH2-N(iPr)2) is prepared by reacting lithium diisopropylaminoborohydride (iPr-LAB) with trimethylsilyl chloride (TMSCl). Aliphatic, aromatic, and heteroaromatic (diisopropylamino) boranes are readily synthesiz
Synthesis and functional properties of symmetrically naphthyl-Based oligoarylenes with high glass-transition temperatures
Zhang, Xiaolinga,Sun, Kanga,Liu, Yurong,Xiong, Mojunb,Xia, Pingfanga,Li, Zhonghui,Cao, Zijian
, p. 1034 - 1040 (2010)
Symmetrically naphthyl-based π-conjugated oligoarylenes, OPP(4)Ph-TNp, OPP(4)An-TNp and OPP(4)OXTNp have successfully been synthesized by a divergent approach using Pd-catalyzed Suzuki cross-coupling reaction of diiodo- or dibromo-oligoarylene and arylboronic acid as a key step. Their optical, electrochemical and thermal properties have also been characterized. These newly synthesized naphthyl-based oligoarylenes show highly morphological (Tg 149-187 °C) and thermal (Tdec 509-597 °C) stabilities as well as exhibit potential applications in optoelectronic fields.
Transmetallations between aryltrialkyltins and borane: Synthesis of arylboronic acids and organotin hydrides
Faraoni,Koll,Mandolesi,Zú?iga,Podestá
, p. 236 - 238 (2000)
Aryltrialkyltin compounds react with borane in THF to give mixtures of trialkyltin hydrides and arylboranes, which on hydrolysis give arylboronic acid in high yields. The arylboronic acids are easily separated and obtained free of organotins.
The synthesis and application of 2-acetyl-6-(1-naphthyl)-pyridine oxime as a new ligand for palladium precatalyst in suzuki coupling reaction
Zhou, Yongchang,Kijima, Tatsuro,Izumi, Taeko
, p. 116 - 118 (2009)
The synthesis of 2-acetyl-6-(1-naphthyl)-pyridine oxime ligand from 2,6-dibromopyridine and 1-bromo-naphthalene is described, and the new palladium(II) complex used as a Pd(0) precatalyst in the Suzuki cross-coupling reaction was studied. The results showed that the novel naphthalene pyridine oxime complex could serve as an efficient precatalyst.
Size-Driven Inversion of Selectivity in Esterification Reactions: Secondary Beat Primary Alcohols
Mayr, Stefanie,Marin-Luna, Marta,Zipse, Hendrik
, p. 3456 - 3489 (2021/03/01)
Relative rates for the Lewis base-mediated acylation of secondary and primary alcohols carrying large aromatic side chains with anhydrides differing in size and electronic structure have been measured. While primary alcohols react faster than secondary ones in transformations with monosubstituted benzoic anhydride derivatives, relative reactivities are inverted in reactions with sterically biased 1-naphthyl anhydrides. Further analysis of reaction rates shows that increasing substrate size leads to an actual acceleration of the acylation process, the effect being larger for secondary as compared to primary alcohols. Computational results indicate that acylation rates are guided by noncovalent interactions (NCIs) between the catalyst ring system and the DED substituents in the alcohol and anhydride reactants. Thereby stronger NCIs are formed for secondary alcohols than for primary alcohols.
Magnesiation of Aryl Fluorides Catalyzed by a Rhodium-Aluminum Complex
Fujii, Ikuya,Semba, Kazuhiko,Li, Qiao-Zhi,Sakaki, Shigeyoshi,Nakao, Yoshiaki
supporting information, p. 11647 - 11652 (2020/08/06)
We report the magnesiation of aryl fluorides catalyzed by an Al-Rh heterobimetallic complex. We show that the complex is highly reactive to cleave the C-F bonds across the polarized Al-Rh bond under mild conditions. The reaction allows the use of an easy-to-handle magnesium powder to generate a range of arylmagnesium reagents from aryl fluorides, which are conventionally inert to such metalation compared with other aryl halides.
Compound taking triarylamine as core, and preparation method and application of compound
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Paragraph 0095-0100, (2020/02/14)
The invention discloses a compound taking triarylamine as a core, and a preparation method and an application of the compound, and belongs to the technical field of semiconductors. The compound provided by the invention has the structure represented by a general formula (1). The invention also discloses the preparation method and the application of the compound. The compound provided by the invention has relatively high glass transition temperature and molecular thermal stability, proper HOMO and LUMO energy levels and relatively high mobility; and the photoelectric property of an OLED devicecan be effectively improved and the service life of the OLED device can be effectively prolonged by optimizing the structure of the device.
Magnesium promoted autocatalytic dehydrogenation of amine borane complexes: A reliable, non-cryogenic, scalable access to boronic acids
Marciasini, Ludovic D.,Richard, Jimmy,Cacciuttolo, Bastien,Sartori, Guillaume,Birepinte, Melodie,Chabaud, Laurent,Pinet, Sandra,Pucheault, Mathieu
, p. 164 - 171 (2018/12/05)
Owing to the unusual reactivity of dialkylamine-borane complexes, a methodology was developed to simply access boronic acids. The intrinsic instability of magnesium aminoborohydride was tweaked into a tandem dehydrogenation borylation sequence. Proceeding via an autocatalytic cycle, amineborane dehydrogenation was induced by a variety of Grignard reagents. Overall, addition of the organomagnesium species onto specially designed dialkylamine-borane complexes led to a variety of boronic acids in high yields. In addition, the reaction can be performed under Barbier conditions, on a large scale.
