Crystal structure of poly[(aceto-nitrile-κ)(μ-7-{[bis-(pyridin-2-ylmeth-yl)amino]-meth-yl}-8-hy-droxy-quinoline-5-sulfonato-κ,:':'')sodium].

In the title compound, [Na(CHNOS)(CHCN)], the Na atom adopts a distorted square-pyramidal coordination geometry, formed by one N and one O atom of the qunolinol moiety in the ligand, two O atoms of sulfonate moieties of two adjacent ligands and the N atom of the coordinated aceto-nitrile solvent. The Na atom is located well above the mean basal plane of the square-based pyramid. The apical position is occupied by a sulfonate O atom of a neighboring ligand.

Synthesis and crystal structure of -10-butyl-10,11,22,23-tetra-hydro-9,21-5,8:15,12-bis(metheno)[1,5,11]tri-aza-cyclo-hexa-decino[1,16-:5,6-']di-indole.

The title compound, CHN, is a carbazolophane, which is a cyclo-phane composed of two carbazole fragments. It has a planar chirality but crystallizes as a racemate in the space group . The mol-ecule adopts an -configuration, in which two carbazole fragments are partially overlapped.

Crystal structure of (7-{[bis-(pyridin-2-ylmeth-yl)amino-κ ,','']meth-yl}-5-chloro-quinolin-8-ol)di-bromidozinc(II).

In the title compound, [ZnBr(CHClNO)], the Zn atom adopts a distorted square-pyramidal coordination geometry, formed by two bromido ligands and three N atoms of the bis-(pyridin-2-ylmeth-yl)amine moiety in the penta-dentate ligand containing quinolinol. The Zn atom is located well above the mean basal plane of the square-based pyramid. The apical position is occupied by a Br atom.

Combined Experimental and Theoretical Studies on Planar Chirality of Partially Overlapped -Symmetric [3.3](3,9)Dicarbazolophanes.

Partially overlapped dicarbazolophanes exhibit a planar chirality. In this study, -symmetrical [3.3](3,9)dicarbazolophane derivatives (-) have been optically resolved by preparative chiral high-performance liquid chromatography for the first time.

Synthesis of Small Fluorescent Molecules and Evaluation of Photophysical Properties.

A series of aniline-based fluorophores were newly synthesized. To increase their fluorescence quantum yields, it was particularly important to substitute 3,3,3-trifluoroprop-1-enyl (TFPE) groups next to the amino group to benefit from an extended π-electron delocalization. Among these, 5-CN-2-TFPE-aniline was found to behave as an excellent fluorophore with a reasonable fluorescence quantum yield of 0.

Crystal Structure of ()-2-(3,3,3-tri-fluoro-prop-1-en-1-yl)aniline.

The mol-ecule of the title compound, CHFN, adopts an configuration with respect to the C=C double bond. The dihedral angle between the benzene ring and the prop-1-enyl group is 25.4 (3)°.

Development of a fluorogenic small substrate for dipeptidyl peptidase-4.

A series of aniline and -phenylenediamine derivatives with electron-withdrawing 3,3,3-trifluoropropenyl substituents were synthesized as small and chemically stable fluorescent organic compounds. Their fluorescence performances were evaluated by converting 2,4-disubstituted aniline to the non-fluorescent dipeptide analogue H-Gly-Pro- for the use as a fluorogenic substrate for dipeptidyl peptidase-4 (DPP-4). The progress of the enzymatic hydrolysis of H-Gly-Pro- with DPP-4 was monitored by fluorometric determination of released into the reaction medium.

Crystal structure of 7-hy-droxy-8-[(4-methyl-piperazin-1-yl)meth-yl]-2-chromen-2-one.

In the title compound, CHNO, the coumarin ring is essentially planar, with an r.m.s.

Crystal structure of 7-{[bis-(pyridin-2-ylmeth-yl)amino]-meth-yl}-5-chloro-quinolin-8-ol.

In the title compound, C22H19ClN4O, the quinolinol moiety is almost planar [r.m.s.

Di-μ 2-acetato-1:2κ (2) O:O';2:3κ (2) O:O'-bis-{μ 2-4,4'-di-chloro-2,2'-[2,2-di-methyl-propane-1,3-diylbis(nitrilo-methanylyl-idene)]diphenolato}-1:2κ (6) O,N,N',O':O,O';2:3κ (6) O,O':O,N,N',O'-tri-cadmium.

In the title linear homo-trinuclear complex, [Cd3(C19H18Cl2N2O2)2(C2H3O2)2], the central Cd(II) atom is located on a centre of inversion and has a distorted octa-hedral coordination geometry formed by four O atoms from two bidentate/tetra-dentate Schiff base ligands and two O atoms from two bridging acetate ligands. The coordination geometry of the terminal Cd(II) atom is square-pyramidal with the tetra-dentate part of the ligand in the basal plane and one O atom from an acetate ligand occupying the apical site. The six-membered CdN2C3 ring adopts a chair conformation.

Di-μ(2)-acetato-1:2κ(2)O:O';2:3κ(2)O:O'-bis-{μ(2)-4,4'-dichloro-2,2'-[2,2-dimethyl-propane-1,3-diylbis(nitrilo-methanylyl-idene)]diphenolato}-1:2κ(6)O,N,N',O':O,O';2:3κ(6)O,O':O,N,N',O'-tricopper(II).

The title compound, [Cu(3)(C(19)H(18)Cl(2)N(2)O(2))(2)(CH(3)CO(2))(2)], is a linear homo-trinuclear Cu(II) complex. The central Cu(II) atom is located on a centre of inversion and has a distorted octa-hedral coordination environment formed by six O atoms from two tetra-dentate Schiff base ligands and two bridging acetate ligands. The coordination geometry of the terminal Cu(II) atom is square-pyramidal with a tetra-dentate ligand in the basal plane.

1,2-Bis[5-(9-ethyl-9H-carbazol-3-yl)-2-methyl-thio-phen-3-yl]-3,3,4,4,5,5-hexa-fluoro-cyclo-pentene.

The title compound, C(43)H(32)F(6)N(2)S(2), is a new symmetrical photochromic diaryl-ethene derivative with 9-ethyl-carbazol-3-yl substituents. The mol-ecule adopts a photoactive anti-parallel conformation [Irie (2000). Chem.

Efficient carrier separation from a photochromic diarylethene layer.

Electrical carrier separation from a photoexcited photochromic molecule could be a promising method for controlling the photosensitivity of such a molecule. We report an efficient carrier separation from a photochromic diarylethene (DAE) molecule by adopting a device structure with a heterojunction consisting of an n-type diarylethene layer and a p-type layer of N,N'-di(1-naphthyl)-N,N'-diphenylbenzidine (NPB). A photocurrent originating from carrier separation for the colored photostationary state was observed, even at zero applied voltage.

Aqua-{4,4',6,6'-tetra-fluoro-2,2'-[(piperazine-1,4-di-yl)dimethyl-ene]diphenolato}copper(II).

In the title compound, [Cu(C(18)H(16)F(4)N(2)O(2))(H(2)O)], the Cu(II) atom shows a distorted square-pyramidal coordination geometry with the N,N',O,O'-tetra-dentate piperazine-diphenolate ligand forming the basal plane. The apical site is occupied by the O atom of a coordinated water mol-ecule. Neighbouring complexes are associated through inter-molecular O-H⋯O and O-H⋯F hydrogen bonds between the water mol-ecule and a phenolate O atom or an F atom from an adjacent ligand, respectively, forming a centrosymmetric dimer.

Bis[μ-4,4',6,6'-tetra-chloro-2,2'-(piperazine-1,4-diyldimethyl-ene)diphenolato]dicopper(II).

In the centrosymmetric dinuclear Cu(II) title complex, [Cu(2)(C(18)H(16)Cl(4)N(2)O(2))(2)], the Cu(II) atom adopts a square-pyramidal geometry with a tetra-dentate ligand in the basal plane. The apical site is occupied by a phenolate O atom from an adjacent ligand, forming a dimer. The mol-ecular structure is stabilized by intra-molecular C-H⋯O and C-H⋯Cl hydrogen bonds.

A monoclinic polymorph of 4,4'-dichloro-2,2'-(piperazine-1,4-diyl-dimethyl-ene)diphenol.

The titile compound, C(18)H(20)Cl(2)N(2)O(2), crystallizes as a monoclinic form in the space group P2(1)/n, with Z' = 1/2. It is polymorphic with the previously reported orthorhombic form [Kubono, Tsuno, Tani & Yokoi (2008). Acta Cryst.

4,4'-Dichloro-2,2'-(piperazine-1,4-diyldimethyl-ene)diphenol.

In the titile compound, C(18)H(20)Cl(2)N(2)O(2), the piperazine ring adopts a chair conformation. The mol-ecule has a non-crystallographic inversion centre in the middle of the piperazine ring at approximate position (3/4, 1/8, 3/8). There are intra-molecular O-H⋯N hydrogen bonds forming S(6) ring motifs.

Intramolecular singlet and triplet excimers of triply bridged [3.3.N](3,6,9)carbazolophanes.

Intermoiety electronic interactions in the singlet and triplet excimer states of triply bridged [3.3.n](3,6,9)carbazolophanes ([3.

Intramolecular excimer emission of triply bridged [3.3.N](3,6,9)carbazolophanes.

The photophysical properties of a series of triply bridged [3.3.n](3,6,9)carbazolophanes ([3.

Photoinduced intramolecular charge separation in a polymer solid below the glass transition temperature.

Photoinduced intramolecular charge separation (CS) in a polar polymer glass, cyanoethylated pullulan (CN-PUL), was studied below the glass transition temperature (Tg=395 K). A series of three carbazole (Cz: donor)-cyclohexane (S: spacer)-acceptor (A: acceptor) molecules (Cz-S-A) was used as intramolecular donor-acceptor dyads. The photoinduced CS rate was evaluated by the fluorescence decay measurement at temperatures from 100 to 400 K.

Synthesis and properties of triply-bridged syn-carbazolophanes.

The intramolecular [2 + 2] photocycloaddition of alpha,omega-bis(3,6-divinyl-N-carbazolyl)alkanes 3 afforded triply bridged syn-[2.2.n](3,6,9)carbazolophanes 4a-6a (n = 4) and 4b,5b (n = 5) composed of isomers derived from the difference in the direction of cyclobutane rings.