- Identification of the donor-substitution effect of tetraphenylethylene AIEgen: Synthesis, photophysical property analysis, and bioimaging applications
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Various aggregation-induced emission luminogen (AIEgen) derivatives based on TPE (tetraphenylethylene) containing the electron-donating moiety (–NMe2, –OMe) and bromine (–Br) moiety were prepared, which are key intermediates for tuning the emis
- Kim, Dokyoung,Kim, Na Hee
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- Nickel-catalyzed three-component domino reactions of aryl grignard reagents, alkynes, and aryl halides producing tetrasubstituted alkenes
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Three-component reaction of aryl Grignard reagents, alkynes, and aryl halides in the presence of 1 mol % of NiCl2 proceeded sequentially through carbomagnesiation of the alkyne followed by cross-coupling of the resulting alkenyl Grignard reagent with aryl halide to give tetrasubstituted alkenes in high yields.
- Xue, Fei,Zhao, Jin,Hor, T. S. Andy,Hayashi, Tamio
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p. 3189 - 3192
(2015/03/30)
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- AIE-induced fluorescent vesicles containing amphiphilic binding pockets and the FRET triggered by host-guest chemistry
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A series of tetraphenylethylene (TPE)-bile acid conjugates was described. It was found that the synergetic combination of the distinct properties of TPE and bile acid units could directly afford uniform fluorescent vesicles with amphiphilic binding pocket
- Zhang, Meng,Yin, Xianpeng,Tian, Tian,Liang, Yun,Li, Weina,Lan, Yue,Li, Jian,Zhou, Meimei,Ju, Yong,Li, Guangtao
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supporting information
p. 10210 - 10213
(2015/06/22)
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- A heterobimetallic complex featuring a Ti-Co multiple bond and its application to the reductive coupling of ketones to alkenes
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To explore metal-metal multiple bonds between first row transition metals, Ti/Co complexes supported by two phosphinoamide ligands have been synthesized and characterized. The Ti metalloligand Cl2Ti(XylNPiPr2)2 (1) was treated with CoI2 under reducing conditions, permitting isolation of the Ti/Co complex [(μ-Cl)Ti(XylNPiPr2)2CoI]2 (2). One electron reduction of complex 2 affords ClTi(XylNPiPr2)2CoPMe3 (3), which features a metal-metal triple bond and an unprecedentedly short Ti-Co distance of 2.0236(9) ?. This complex is shown to promote the McMurry coupling reaction of aryl ketones into alkenes, with concomitant formation of the tetranuclear complex [Ti(μ3-O)(NXylPiPr2)2CoI]2 (4). A cooperative mechanism involving bimetallic C=O bond activation and a cobalt carbene intermediate is proposed.
- Wu, Bing,Bezpalko, Mark W.,Foxman, Bruce M.,Thomas, Christine M.
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p. 2044 - 2049
(2015/03/04)
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- WATER-SOLUBLE AIE LUMINOGEN FOR MONITORING AND RETARDATION OF AMYLOID FIBRILLATION OF INSULIN
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The presently described subject matter is directed to a water-soluble conjugated polyene compound and the derivatives thereof that exhibit aggregation induced emission, as well as any water dispersible, fluorescent, polymeric microparticles, nanoparticles, and/or pharmaceutical composition comprising the water-soluble conjugated polyene compound and/or the derivatives thereof. Also provided are methods of making and using the compound, derivatives and particles of the presently described subject matter. The presently described water-soluble conjugated polyene compound are useful as bioprobes for the detection of biomacromolecules, in the manufacture of sensors, in monitoring and retarding formation of amyloid protein fibril in vitro and in vivo, and in developing anti-cancer drugs.
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- Imidazole-bearing tetraphenylethylene: Fluorescent probe for metal ions based on AIE feature
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With an aggregation-induced emission feature, a suspension of imidazole-bearing tetraphenylethylene in a tetrahydrofuran-water mixture with a high water fraction is highly emissive, and can be completely quenched by Fe3+ ions due to the coordin
- Bian, Ning,Chen, Qi,Qiu, Xi-Long,Qi, Ai-Di,Han, Bao-Hang
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scheme or table
p. 1667 - 1671
(2011/10/08)
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- Fluorescent water-soluble conjugated polyene compounds that exhibit aggregation induced emission and methods of making and using same
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The presently described subject matter is directed to water-soluble conjugated polyene compounds that exhibit aggregation induced emission, as well as to water dispersible, fluorescent, polymeric microparticles and/or nanoparticles comprising the water-soluble conjugated polyene compounds. Also provided are methods of making and using the compounds and particles. The described conjugated polyene compounds are useful as bioprobes for the detection biomacromolecules, as well as in the manufacture of sensors.
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- Low-valent titanium induced reductive coupling reaction of carboxylic derivatives with aromatic ketones
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The intermolecular and intramolecular coupling reaction of carboxylic derivaties with aromatic ketones induced by titanium tetrachloride and zinc powder was studied.
- Shi, Da-Qing,Chen, Jian-Xie,Chai, Wen-Ying,Chen, Wei-Xing,Kao, Tsi-Yu
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p. 2963 - 2964
(2007/10/02)
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- Merostabilization in radical ions, triplets, and biradicals. 5. The thermal cis-trans isomerization of para-substituted tetraphenylethylenes
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The cis- and trans-isomerization of four para-substituted (three disubstituted and one tetrasubstituted) tetraphenylethylenes have been synthesized, separeted, and characterized by either dipole moment or X-ray analysis.The rates of thermal isomerization
- Leigh, William J.,Arnold, Donald R.
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p. 609 - 620
(2007/10/02)
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- Merostabilization in radical ions, triplets, and biradicals. 6. The excited state behaviour of para-substituted tetraphenylethylenes
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The half-wave oxidation and reduction potentials, measured by cyclic voltammetry, of tetraphenylethylene and a series of para-substituted (cyano, methyl, and methoxy) derivatives are found to correlate with ?+ and ?- values respectively.The deviations from these correlations that are observed for one of the derivatives (unsymmetrically substituted) are attributed to merostabilization.The nature of the first excited singlet state of these compounds is investigated by spectroscopic and photochemical means.Quantum yields for the direct cis-trans photoisomerization demonstrate that this provides the dominant pathway for decay of the singlet state.The ?,?* triplet energies are estimated from a qualitative investigation of the relative efficiencies of triplet-sensitized cis-trans isomerization as a function of sensitizer triplet energy.
- Leigh, William J.,Arnold, Donald R.
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p. 3061 - 3075
(2007/10/02)
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