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1.
Spectrochim Acta A Mol Biomol Spectrosc ; 285: 121898, 2023 Jan 15.
Artigo em Inglês | MEDLINE | ID: mdl-36150259

RESUMO

Fluorescent probes for H2S are often interfered by other thiols. In this work, a coumarin-pyrazole dye with 2,4-dinitrosulfonyl group was designed for the detection of H2S. The probe exhibits weak fluorescence in water due to the photo induced electron transfer (PET) by 2,4-dinitrosulfonyl. After the sulfonyl group is cleaved off by H2S, strong fluorescence appears. The probe can specifically detect H2S without being interfered by other biological thiols, and shows a wide applicable pH range, low detection and wide detection range. The excellent detection properties of the probe can also be used to detect endogenous and exogenous H2S in cells. In addition, the probes can be made into portable test paper for the detection of H2S in solutions and can detect H2S in different water samples.


Assuntos
Sulfeto de Hidrogênio , Humanos , Cumarínicos/química , Corantes Fluorescentes/química , Células HeLa , Pirazóis , Compostos de Sulfidrila , Água
2.
Chem Commun (Camb) ; 58(98): 13596-13599, 2022 Dec 08.
Artigo em Inglês | MEDLINE | ID: mdl-36398678

RESUMO

A new fluorescent emitter based on π-extended benzothiadiazole was synthesized. The emitter exhibited a large molar extinction coefficient, a high quantum yield of 98% and a large radiative decay rate of 108 s-1. Moreover, the obtained TADF-sensitized fluorescent OLED displayed excellent device performance with a high EQEmax of 14.3%.

3.
Acta Crystallogr Sect E Struct Rep Online ; 68(Pt 5): o1531, 2012 May 01.
Artigo em Inglês | MEDLINE | ID: mdl-22590395

RESUMO

In the title mol-ecule, C(19)H(18)Cl(2)O(4), the cyclo-hexane ring adopts a chair conformation. The furan ring is essentially planar and forms a dihedral angle of 82.1 (1)° with the benzene ring. In the crystal, weak C-H⋯O interactions are present.

4.
Acta Crystallogr Sect E Struct Rep Online ; 68(Pt 4): o1203, 2012 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-22606143

RESUMO

In the title compound, C(14)H(14)N(4), the imidazolidine moiety is nearly planar, having an N-C-N-C torsion angle of 4.43 (3)°. The crystal structure is characterized by classical N-H⋯N hydrogen bonds, which form inversion dimers.

5.
Acta Crystallogr Sect E Struct Rep Online ; 67(Pt 7): o1774, 2011 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-21837151

RESUMO

In the title compound, C(14)H(11)F(2)N(3)S, the heterocyclic five-membered ring has an envelope conformation. Although the mol-ecule is chiral, the compound is a racemate (R/S). There is a weak inter-molecular C-H⋯π inter-action but no classical hydrogen bonds are observed in the crystal structure.

6.
Acta Crystallogr Sect E Struct Rep Online ; 66(Pt 4): o867, 2010 Mar 20.
Artigo em Inglês | MEDLINE | ID: mdl-21580689

RESUMO

In the title compound, C(11)H(15)N(5)O(2), the 1,3,5-triazine ring exhibits a half-chair conformation. An intra-molecular N-H⋯O inter-action occurs. In the crystal structure, mol-ecules are connected by inter-molecular C-H⋯O and N-H⋯N hydrogen bonds, forming a zigzag chain along the b axis.

7.
Acta Crystallogr Sect E Struct Rep Online ; 66(Pt 7): o1827, 2010 Jun 26.
Artigo em Inglês | MEDLINE | ID: mdl-21588033

RESUMO

In the title compound, C(14)H(11)Cl(2)N(3)S, the thia-zole ring is in an envelope conformation with the -CH(2)- group bonded to the S atom forming the flap. The crystal structure is stabilized by weak inter-molecular C-H⋯Cl and C-H⋯N hydrogen bonds.

8.
Acta Crystallogr Sect E Struct Rep Online ; 66(Pt 8): o1981, 2010 Jul 10.
Artigo em Inglês | MEDLINE | ID: mdl-21588297

RESUMO

The 1,3,5-oxadiazinane ring in the title compound, C(12)H(14)F(2)N(4)O(3), has a conformation inter-mediate between half-chair and screw-boat. The crystal structure is stabilized by weak inter-molecular C-H⋯O hydrogen bonds. Weak π-π inter-actions are indicated by the relatively long centroid-centroid distance of 3.9199 (12) Šand inter-planar distance of 3.803 Šbetween symmetry-related benzene rings from neighbouring mol-ecules.

9.
Acta Crystallogr Sect E Struct Rep Online ; 66(Pt 8): o2148, 2010 Jul 31.
Artigo em Inglês | MEDLINE | ID: mdl-21588434

RESUMO

In the title compound, C(4)H(5)N(3)S, the tdihydrothiazole ring is almost planar, the maximum and minimum deviations being 0.188 (2) Šand 0.042 (3) Å, respectively. The crystal structure involves intermolecular N-H⋯N hydrogen bonds.

10.
Acta Crystallogr Sect E Struct Rep Online ; 66(Pt 8): o2171, 2010 Jul 31.
Artigo em Inglês | MEDLINE | ID: mdl-21588452

RESUMO

The title compound, C(12)H(12)ClN(3)S, features a thia-zolyl ring having an envelope conformation with the -CH(2)- group bonded to the S atom forming the flap. The C=N double bond has a Z configuration. The crystal structure shows inter-molecular C-H⋯S hydrogen bonds.

11.
Acta Crystallogr Sect E Struct Rep Online ; 66(Pt 9): o2456, 2010 Aug 28.
Artigo em Inglês | MEDLINE | ID: mdl-21588776

RESUMO

In the title compound, C(12)H(15)ClN(4)O(3), which has potential insecticidal activity, the oxadiazine ring and the benzene ring make a dihedral angle of 84.63 (2)° to one another. The crystal packing involves weak inter-molecular C-H⋯O hydrogen bonds.

12.
Acta Crystallogr Sect E Struct Rep Online ; 66(Pt 12): o3201, 2010 Nov 17.
Artigo em Inglês | MEDLINE | ID: mdl-21589495

RESUMO

In the title compound, C(13)H(18)ClN(5)O(2), the 1,3,5-triazinane ring exhibits an envelope conformation with an E form. The chloro-phenyl ring and the nitro group are each twisted with respect to the mean plane of the triazinane ring, making dihedral angles of 67.30 (9) and 83.54 (8)°, respectively. In the crystal, weak inter-molecular C-H⋯O hydrogen bonds build up a corrugated layer parallel to the (101) plane.

13.
J Agric Food Chem ; 57(11): 4854-60, 2009 Jun 10.
Artigo em Inglês | MEDLINE | ID: mdl-19422214

RESUMO

A series of novel 2-arylphenyl ether-3-(1H-1,2,4-triazol-1-yl)propan-2-ol derivatives were designed and synthesized as candidate fungicides. The new compounds were identified by (1)H NMR spectroscopy and element analysis. Their antifungal activities were evaluated. They exhibited excellent antifungal activities against five common pathogens in comparison with the commercial fungicides tebuconazole and difenoconazole. The antifungal activities of three new triazole alcohol compounds were compared with those of tebuconazole and difenoconazole at a concentration of 1 mug/mL.


Assuntos
Fungos/efeitos dos fármacos , Fungicidas Industriais/síntese química , Fungicidas Industriais/farmacologia , Doenças das Plantas/microbiologia , Propanóis/síntese química , Propanóis/farmacologia , Triazóis/síntese química , Triazóis/farmacologia , Fungicidas Industriais/química , Propanóis/química , Triazóis/química
14.
Acta Crystallogr Sect E Struct Rep Online ; 65(Pt 2): o302, 2009 Jan 14.
Artigo em Inglês | MEDLINE | ID: mdl-21581911

RESUMO

In the title compound, C(19)H(22)Cl(2)O(3), the cyclo-hexane ring adopts a chair conformation. The furan ring plane forms dihedral angles of 81.88 (2) and 50.19 (3)°, respectively, with the benzene ring and the plane formed by the butyl C atoms. The crystal structure is stabilized by weak inter-molecular C-H⋯O hydrogen bonds.

15.
Acta Crystallogr Sect E Struct Rep Online ; 65(Pt 4): o845, 2009 Mar 25.
Artigo em Inglês | MEDLINE | ID: mdl-21582564

RESUMO

In the title compound, C(22)H(20)Cl(2)O(3), the cyclo-hexyl ring adopts a chair conformation. The furanyl ring plane makes dihedral angles of 70.10 (2) and 86.12 (3)° with the 2,4-dichloro-phenyl ring and aromatic ring of the benzyl group, respectively. The crystal structure features weak inter-molecular C-H⋯O and C-H⋯Cl hydrogen bonds.

16.
Acta Crystallogr Sect E Struct Rep Online ; 65(Pt 4): o846, 2009 03 25.
Artigo em Inglês | MEDLINE | ID: mdl-21582565

RESUMO

In the title compound, C(21)H(18)Cl(3)NO(3), the cyclo-hexane ring is in a chair conformation. The five-membered ring forms a dihedral angle of 69.89 (2)° with the benzene ring. The dihedral angle between the benzene and pyridine rings is 14.03 (7)°.

17.
Acta Crystallogr Sect E Struct Rep Online ; 65(Pt 7): e18, 2009 Jun 27.
Artigo em Inglês | MEDLINE | ID: mdl-21582640

RESUMO

The chemical name of the title compound in the paper by Xu, Huang & Guo [Acta Cryst. (2009), E65, o846] is corrected and the structural diagram is updated.[This corrects the article DOI: 10.1107/S1600536809010101.].

18.
Acta Crystallogr Sect E Struct Rep Online ; 64(Pt 5): o805, 2008 Apr 04.
Artigo em Inglês | MEDLINE | ID: mdl-21202296

RESUMO

The crystal packing of the title compound, C(11)H(13)NO(3)S, exhibits weak inter-molecular C-H⋯O hydrogen bonding, which links mol-ecules related by translation along the b axis into chains, and π-π inter-actions [centroid-centroid distance of 3.778 (2) Šbetween benzene rings].

19.
Acta Crystallogr Sect E Struct Rep Online ; 64(Pt 6): o1074, 2008 May 14.
Artigo em Inglês | MEDLINE | ID: mdl-21202592

RESUMO

In the title compound, C(11)H(15)ClN(4)O(2), the amino group is involved in intra- and inter-molecular N-H⋯O hydrogen bonds. The former contributes to the mol-ecular conformation, while the latter link the mol-ecules into centrosymmetric dimers. The crystal structure also exhibits weak inter-molecular C-H⋯O inter-actions.

20.
Acta Crystallogr Sect E Struct Rep Online ; 64(Pt 8): o1500, 2008 Jul 16.
Artigo em Inglês | MEDLINE | ID: mdl-21203211

RESUMO

The title compound, C(16)H(12)Cl(2)O(3), crystallizes with two independent mol-ecules in the asymmetric unit. The dihedral angles between the planes of the benzene rings in the two independent mol-ecules are 68.65 (2) and 68.47 (3)°. The short distance of 3.899 (5) Šbetween the centroids of the benzene rings of neighbouring mol-ecules indicate π-π inter-actions. The crystal structure is stabilized by a network of intermolecular C-H⋯O hydrogen bonds.

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