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Andre Jean Attias - One of the best experts on this subject based on the ideXlab platform.
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wavelength dependence and figures of merit of ultrafast third order optical nonlinearity of a conjugated 3 3 Bipyridine Derivative
Applied Optics, 2003Co-Authors: Qiying Chen, Edward H Sargent, Nicolas Leclerc, Andre Jean AttiasAbstract:The wavelength dependence and figures of merit of the third-order optical nonlinearity of a conjugated 3,3′-Bipyridine Derivative, a designed nondipolar structure of the donor-acceptor-acceptor-donor type, are reported. Z scans reveal positive nonlinear refractive-index changes for wavelengths longer than the one-photon absorption wavelength. Although the value of nonlinear Kerr coefficient n2 decreases from 6.0(±0.2) × 10-6 cm2/GW at 750 nm to 4.6(±0.7) × 10-6 cm2/GW at 1550 nm, the value of nonlinear absorption β decreases from 0.084 cm/GW at 750 nm to a negligible value at 1550 nm, giving rise to excellent nonlinearity-to-loss figures of merit at telecommunications wavelengths.
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ultrafast nonresonant third order optical nonlinearity of a conjugated 3 3 Bipyridine Derivative from 1150 to 1600 nm
Applied Physics Letters, 2003Co-Authors: Qiying Chen, Edward H Sargent, Nicolas Leclerc, Andre Jean AttiasAbstract:A conjugated 3,3′-Bipyridine Derivative, an apolar structure of donor–acceptor–acceptor–donor (D–A–A–D) type was designed and characterized for third-order optical nonlinearity using Z-scan technique in the wavelength range of 1150–1600 nm. Z-scan spectra reveal a positive Kerr coefficient across this wavelength range with n2=(4.6±0.7)×10−6 cm2/GW at 1550 nm accompanied by negligible nonlinear absorption for wavelength around 1550 nm, indicating ideal figures of merit for applications in ultrafast all-optical switching.
Yupeng Tian - One of the best experts on this subject based on the ideXlab platform.
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crystal structures one and two photon excited fluorescence of two complexes based on d π a structural 2 2 Bipyridine Derivative
Dyes and Pigments, 2019Co-Authors: Feng Jin, Mimi Wang, Quanjun Zha, Ying Geng, Zhaodi Liu, Rongbao Liao, Dongliang Tao, Yupeng TianAbstract:Abstract By coordination of an electron donor-π-bridge-electron acceptor (D-π-A) optical functional organic ligand (L) with ZnBr2 and HgBr2, two fluorescent complexes ZnBr2L (1) and HgBr2L (2) were obtained. The structures of them were solved by single crystal X-ray diffraction analysis. Study of linear and nonlinear optical properties has shown that the complexes exhibit excellent one- and two-photon excited fluorescence and large two-photon absorption cross-section values. Dye 1 shows the potential application in fluorescence microscopy bioimaging.
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synthesis characterization optical property of a Bipyridine Derivative and its application to determine trace zn2 in water
Sensors and Actuators B-chemical, 2013Co-Authors: Lin Kong, Yu Chen, Long Zhao, Bin Song, Jiaxiang Yang, Yupeng Tian, Xutang TaoAbstract:Abstract A new fluorescent Bipyridine Derivative 1-(2-amino-5-formylphenyl)-2-[2-amino-5-[(E)-2-[6-(6-methylpyridin-2-yl)pyridin-2-yl]vinyl]phenyl]ethane-N,N,N′,N′-tetraacetic acid (abbreviated as BPYTA) has been synthesized and characterized, which can be dissolved in water. Then its optical properties have been studied. When Zn 2+ ion is added into BPYTA solution, the fluorescence intensity has a linear relationship with the concentration of Zn 2+ ion. Meanwhile, BPYTA has little response to the existence of many other metal ions, especially Cd 2+ ion. Thus, BPYTA has potential application in determining trace Zn 2+ ion in water.
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synthesis characterization and crystal structure of a novel copper ii complex with an asymmetric coordinated 2 2 Bipyridine Derivative a model for the associative complex in the ligand substitution reactions of cu tren l 2
Inorganic Chemistry, 1996Co-Authors: Chunying Duan, Yupeng Tian, Xiaozeng You, Xiaoying HuangAbstract:The titled compound, (tris(2-aminoethyl)amine)(4,5-diazafluoren-9-one) copper(II) perchlorate, [Cu(C(6)H(18)N(4))(C(11)H(6)N(2)O)(ClO(4))(2)], 1, has been designed, synthesized, and characterized. The electronic and ESR spectra are very different from those of [Cu(tren)L](2+) complexes where L is monodentate ligand. The X-ray analysis revealed that the complex crystallizes in the monoclinic space group P2(1)/c, with a = 10.726(6) A, b = 14.921(7) A, c = 14.649(4) A, beta = 95.13(3) degrees, and Z = 4. The copper(II) ion is coordinated by four nitrogen atoms from tris(2-aminoethyl)amine (tren) and two nitrogen atoms from 4,5-diazafluoren-9-one (dzf) to form an unusual six-coordinate (4 + 1 + 1') geometry. The structure is very rare, and to our knowledge, it is the first example of an asymmetric bidentate phenanthroline Derivative metal complex. The structure could be used as a model of the associative complex in the ligand-exchange and ligand-substitution reactions of [Cu(tren)L](2+) and the catalytic mechanisms of enzymes involving copper sites. From the electronic and variable-temperature ESR spectra in solution, the possible mechanism of these reactions has also been proposed. As a comparison, the complex [Cu(tren)(ImH)(ClO(4))(2)], 2, was also synthesized and characterized, where ImH is imidazole.
Qiying Chen - One of the best experts on this subject based on the ideXlab platform.
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wavelength dependence and figures of merit of ultrafast third order optical nonlinearity of a conjugated 3 3 Bipyridine Derivative
Applied Optics, 2003Co-Authors: Qiying Chen, Edward H Sargent, Nicolas Leclerc, Andre Jean AttiasAbstract:The wavelength dependence and figures of merit of the third-order optical nonlinearity of a conjugated 3,3′-Bipyridine Derivative, a designed nondipolar structure of the donor-acceptor-acceptor-donor type, are reported. Z scans reveal positive nonlinear refractive-index changes for wavelengths longer than the one-photon absorption wavelength. Although the value of nonlinear Kerr coefficient n2 decreases from 6.0(±0.2) × 10-6 cm2/GW at 750 nm to 4.6(±0.7) × 10-6 cm2/GW at 1550 nm, the value of nonlinear absorption β decreases from 0.084 cm/GW at 750 nm to a negligible value at 1550 nm, giving rise to excellent nonlinearity-to-loss figures of merit at telecommunications wavelengths.
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ultrafast nonresonant third order optical nonlinearity of a conjugated 3 3 Bipyridine Derivative from 1150 to 1600 nm
Applied Physics Letters, 2003Co-Authors: Qiying Chen, Edward H Sargent, Nicolas Leclerc, Andre Jean AttiasAbstract:A conjugated 3,3′-Bipyridine Derivative, an apolar structure of donor–acceptor–acceptor–donor (D–A–A–D) type was designed and characterized for third-order optical nonlinearity using Z-scan technique in the wavelength range of 1150–1600 nm. Z-scan spectra reveal a positive Kerr coefficient across this wavelength range with n2=(4.6±0.7)×10−6 cm2/GW at 1550 nm accompanied by negligible nonlinear absorption for wavelength around 1550 nm, indicating ideal figures of merit for applications in ultrafast all-optical switching.
Yu A Eremina - One of the best experts on this subject based on the ideXlab platform.
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synthesis and structures of cui ii complexes with a 2 2 Bipyridine Derivative bearing a 3 carene moiety
Russian Chemical Bulletin, 2018Co-Authors: T E Kokina, L A Glinskaya, D A Piryazev, Yu A Baranov, A M Agafontsev, Yu A EreminaAbstract:The complex salt {[CuL2][Cu4I6]•MeCN}n (1) and the compound [Cu4L3I4]•3 MeCN (2) (L is a chiral ligand bearing a natural monoterpene (+)-3-carene moiety) were synthesized. The crystal structures of compounds 1 and 2 were determined by X-ray diffraction. The structure of compound 1 consists of complex cations [CuL2]2+ (N3O2 polyhedron is a trigonal bipyramid) and CuI coordination polymers (CuI4 polyhedron is a tetrahedron) as anions. The experimental magnetic moment μeff at 300 K is 1.90 μB, which is consistent with the X-ray diffraction data and the assumption that compound 1 is mixed-valence. The structure of compound 2 comprises a tetranuclear CuI complex, in which three Cu atoms are coordinated by two N atoms of the ligand L and two I atoms, and the fourth Cu atom is coordinated by four I atoms (coordination polyhedra are distorted tetrahedra). Compounds L and 2 were found to influence the viability of human laryngeal carcinoma cells (Hep2). The IC50 value for complex 2 (13.0±1.7 μM) is substantially smaller than IC50 for compound L (30.5±0.5 μM).
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synthesis and structures of cu i ii complexes with a 2 2 Bipyridine Derivative bearing a 3 carene moiety
Russian Chemical Bulletin, 2018Co-Authors: T E Kokina, L A Glinskaya, D A Piryazev, Yu A Baranov, A M Agafontsev, Yu A EreminaAbstract:The complex salt {[CuL2][Cu4I6]•MeCN}n (1) and the compound [Cu4L3I4]•3 MeCN (2) (L is a chiral ligand bearing a natural monoterpene (+)-3-carene moiety) were synthesized. The crystal structures of compounds 1 and 2 were determined by X-ray diffraction. The structure of compound 1 consists of complex cations [CuL2]2+ (N3O2 polyhedron is a trigonal bipyramid) and CuI coordination polymers (CuI4 polyhedron is a tetrahedron) as anions. The experimental magnetic moment μeff at 300 K is 1.90 μB, which is consistent with the X-ray diffraction data and the assumption that compound 1 is mixed-valence. The structure of compound 2 comprises a tetranuclear CuI complex, in which three Cu atoms are coordinated by two N atoms of the ligand L and two I atoms, and the fourth Cu atom is coordinated by four I atoms (coordination polyhedra are distorted tetrahedra). Compounds L and 2 were found to influence the viability of human laryngeal carcinoma cells (Hep2). The IC50 value for complex 2 (13.0±1.7 μM) is substantially smaller than IC50 for compound L (30.5±0.5 μM).
Wayne H Smith - One of the best experts on this subject based on the ideXlab platform.
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synthesis of mixed ring organoactinide complexes 2 cyclooctatetraene pentamethylcyclopentadienyl thf uranium c8h8 c5me5 u thf and its 4 4 dimethyl 2 2 Bipyridine Derivative
Organometallics, 1993Co-Authors: Ann R Schake, Larry R Avens, Carol J Burns, David L Clark, Alfred P Sattelberger, Wayne H SmithAbstract:The (pentamethylcyclopentadienyl)uranium(III) complex (C[sub 5]Me[sub 5])UI[sub 2](THF)[sub 3] reacts with K[sub 2]C[sub 8]H[sub 8] in THF to form the mixed-ring uranium(III) complex (C[sub 8]H[sub 8])(C[sub 5]Me[sub 5])U(THF) (1). Treatment of 1 with 4,4[prime]-dimethyl-2,2[prime]-Bipyridine (Me[sub 2]bpy) gives the 10-coordinate complex (C[sub 8]H[sub 8])(C[sub 5]Me[sub 5])U(Me[sub 2]bpy) (2). The syntheses of 1 and 2 and the X-ray structure of 2 are described herein. 16 refs., 1 fig.