25433-29-8

Usage

Type of compound

Heterocyclic compound

Structure

Pyridine ring linked to a triazole ring with a phenyl substituent

Usage in medicinal chemistry and drug discovery

Exhibits potential biological activities such as antifungal, antibacterial, and anti-inflammatory properties
Utilization in the synthesis of pharmaceutical agents and agrochemicals

Importance in the development of new drugs and functional materials

Unique structure and reactivity make it a valuable building block

Upstream product

• 100-47-0 benzonitrile 
• 100-70-9 2-Cyanopyridine 
• 613-94-5 benzoic acid hydrazide 
• 98-88-4 benzoyl chloride 
• 1005-02-3 picolinamidrazone 
• 31646-28-3 4-((methylthio)(phenyl)methylene) morpholinium iodide 
• 1005-02-3 2-pyridinecarbohydrazonamide 
• 1121-60-4 pyridine-2-carbaldehyde 
• 3357-42-4 3-phenyl-1,2,4-triazole 
• 1005-02-3 pyridine-2-carboxamidrazone 

Downstream Products

• 1392844-98-2 C₅H₄NC₂N₃(C₆H₅)C₆H₄N(C₆H₄C₁₂H₈N)2 
• 136115-85-0 {Rh(ppy)2(NC₅H₄C₂(C₆H₅)N₂NH)}PF₆*(CH₃)2CO 

Relevant academic research and scientific papers

A mononuclear cobalt(III) 3-(2-pyridyl)-5-phenyl-1,2,4-triazolato complex: Hydrothermal synthesis, crystal structure, thermostability, and DFT calculations

Starting with 1H-3-phenyl-5-(pyridin-2-yl)-1,2,4-triazole (1-Hppt), a Co(III) complex, [Co(ppt)3] (1), has been synthesized by reaction with CoF3 under hydrothermal conditions and characterized by its infrared spectrum and elemental

TBHP/TBAI–Mediated simple and efficient synthesis of 3,5-disubstituted and 1,3,5-trisubstituted 1H-1,2,4-triazoles via oxidative decarbonylation of aromatic aldehydes and testing for antibacterial activities

The author has developed a simple, efficient and eco–friendly convenient general method for synthesis of 3,5–disubstituted–1,2,4–triazoles and 1,3,5–trisubstituted–1,2,4–triazoles from 3–monosubstituted–1,2,4–triazoles and 1,3–disubstituted–1,2,4–triazoles respectively using tetrabutylammonium iodide (TBAI) as catalyst and TBHP as oxidant under mid reaction conditions. This method provides structurally diverse 3,5–disubstituted 1,2,4–triazoes and 1,3,5––trisubstituted–1,2,4–triazoles in good to excellent yields. 3,5–Disubstituted 1,2,4–triazoes and 1,3,5––trisubstituted–1,2,4–triazoles derivatives are biologically and pharmaceutically active molecules, and therefore, this protocol could be of wide applications in medicinal chemistry and organic chemistry.

Structure and excitation-dependent emission of novel zinc complexes with pyridyltriazoles

A series of Zn(ii) complexes with 5-(4-R-phenyl)-3-(pyridin-2-yl)-1,2,4-triazoles have been synthesized and subsequently characterized by single crystal X-ray diffraction, 1H-NMR, FT-IR spectroscopy, elemental analyses, ESI-MS, and PXRD. The X-ray diffraction analyses revealed that the complexes have a similar molecular structure and their supramolecular frameworks are constructed by hydrogen bonds and π?π interaction scaffolds. Upon irradiation with UV light, the studied complexes display deep blue emission at 396-436 nm in the solid state. The compounds show an unexpected excitation-dependent emission phenomenon which is detected by a change in the emission color (from blue to yellow) upon increase of the excitation wavelength. The conducted quantum-chemical calculations indicate that supramolecular differences in the single-crystal architecture of the synthesized complexes play a crucial role for this photophysical behaviour.

N - hexyl carbazole substituted phenyl and [...] (III) complex and its preparation

The invention discloses an N-hexyl carbazole substituted phenyl benzothiazole iridium (III) complex. The complex has a structure represented in a general structural formula (I). The complex emits organic yellow light, has double polarity and better solubility, and can be taken as a phosphorescent luminescence material for preparation of an organic light-emitting device with a wet method.

Influence of the nature of the substituent in 3-(2-pyridyl)-1,2,4-triazole for complexation with Pd2+

The structure of four new palladium complexes [Pd(HL 2 )Cl 2 and Pd(L 1-3 ) 2 ] with 3-(2-pyridyl)-5-R-1,2,4-triazoles (R=H, CH3, Ph respectively HL 1, HL 2, HL 3 ) wa

A novel high-efficiency white hyperbranched polymer derived from polyfluorene with green and red iridium(III) complexes as the cores

A new kind of single triple-color hyperbranched polymer PF-Ir(ppy)2(pytzph)m-Ir(piq)2(pytzph)n was designed and synthesized, in which green and red iridium(III) complexes acted as cores and blue polyfluorene acted as backbone. PF-Ir(ppy)2(pytzph)m-Ir(piq)2(pytzph)n (m = 5, n = 5 and m = 25, n = 5) had higher quantum efficiency than PF-Ir(piq)2(pytzph)5. The energy transfer from green core bis(2-phenylpyridine)[3-(2-pyridyl)-5-phenyl-1,2,4-triazole]iridium(III) [Ir(ppy)2(pytzph)] with high triplet energy level (ET = 2.58 eV) to red core bis(1-phenylisoquinolinato)[3-(2-pyridyl)-5-phenyl-1,2,4-triazole]iridium(III) [Ir(piq)2(pytzph)] (ET = 2.12 eV) could realize by intermediate poly(9,9-dioctylfluorene) (PF) segments. A typical single emitting-layer device with the configuration of ITO/PEDOT:PSS (40 nm)/PF-Ir(ppy)2(pytzph)m-Ir(piq)2(pytzph)n (80 nm)/TPBi (40 nm)/LiF (0.8 nm)/Al (100 nm) was fabricated. Among the white polymers, PF-Ir(ppy)2(pytzph)5-Ir(piq)2(pytzph)5 exhibited excellent electroluminescent properties with a Commission Internationale Ed I'eclairage (CIE) coordinate of (0.32, 0.34) and a maximum luminous efficiency of 11.49 cd/A.

Bipolar blue phosphorescent host material based on carbazole and 1,2,4-triazole

The invention discloses a bipolar blue phosphorescent host material which is as shown in a structural general formula (I) and takes carbazole and 1,2,4-triazole as a donor and a receptor respectively. The triplet-state energy level of the host material is

Ir(III) phosphors modified with fluorine atoms in pyridine-1,2,4-triazolyl ligands for efficient OLEDs possessing low-efficiency roll-off

Five neutral heteroleptic Ir(III) complexes 1-5 using the same cyclometalated ligand and different pyridine-1,2,4-triazolyl derivatives as ancillary ligands with fluorine substituents attached, were rationally designed and prepared. Their photophysical, electrochemical, and thermal properties were studied, and theoretical calculations were performed to understand the emission behaviors as well. Introducing fluorine atoms has little effect on the photophysical and thermal properties, but the performances of the resulting devices can be fine-tuned. Among them, a heavy doping level device employing a phosphor with five fluorine atoms delivers superior device efficiencies with ηc = 32.6 cd A-1 and ηp = 27.6 lm W-1, respectively, which is higher than those of other counterparts. Importantly, such a device exhibits almost negligible roll-off in luminance efficiency. Despite nondoped devices achieving good EL performance, more fluorine atoms lead to a relatively higher efficiency roll-off. The results suggest that rational incorporation of fluorine atoms into the ancillary ligands can significantly improve the performance of devices with features of high efficiency and small roll-off.

A Novel Ratiometric Oxygen Sensor Based On a Sextuple Hydrogen-Bonding Self-Assembly Molecular Heterodimer

A novel sextuple hydrogen-bonding (HB) self-assembly molecular heterodimer bearing an iridium complex as the indicator dye and two carbazoles as the reference dye, namely 6HB-Irbt-Cz, was synthesized, and its molecular structure was confirmed by1H NMR,13CNMR, TOF-MS and 2D NMR. Because of the inefficient energy transfer process between the carbazole and iridium complex units, 6HB-Irbt-Cz exhibits distinct ?uorescence/phosphorescence dual emission in neat film state. More importantly, the neat film sample of 6HB-Irbt-Cz could display linear ratiometric optical response toward oxygen in the full oxygen concentration range from 0 to 100 vol%, together with good stability, reversibility and rapid response-recovery times. Note that this represents the first discovery of neat-film-based oxygen sensor capable of showing strictly linear ratiometric Stern-Volmer behavior in the oxygen concentration of 0–100 vol%.

1,2,4-Triazole derivatives as host materials for blue and green phosphorescent organic light-emitting devices

A novel host material, namely 9-(6-(3-phenyl-5-(pyridin-2-yl)-4H-1,2,4-triazol-4-yl)hexyl)-9H-carbazole (PPHCZ) was designed and synthesized by incorporating 1, 2, 4-triazol as the electron-withdrawing moiety and carbazole as electron-donating moiety using hexyl as bridge. The photophysical, electrochemical, thermal properties and performances in phosphorescent organic light-emitting devices (PhOLED) were thoroughly characterized. PPHCZ with a high triplet energy level (3.01?eV) exhibited an obvious intermolecular interaction in thin film. Green and blue PhOLEDs using fac-tris(2-phenylpyridine)iridium and iridium(III) bis(4,6-difluorophenyl)-pyridinato [Formula presented],C2′]picolinate as phosphorescent dopants have been fabricated.