16112-26-8

Upstream product

• 253878-42-1 1-(4'-methylbenzoyl)-2-(4'-tert-butylbenzoyl)-hydrazine 
• 3619-22-5 p-toluic hydrazide 
• 1710-98-1 p-tert-butyl benzoyl chloride 
• 94-08-6 4-methylbenzoic acid ethyl ester 
• 99-94-5 p-Toluic acid 
• 98-73-7 4-(1,1-dimethylethyl)benzoic acid 
• 99-75-2 4-methyl-benzoic acid methyl ester 

Downstream Products

• 16157-15-6 2-(4-tert-butyl-phenyl)-5-(4-trans-styryl-phenyl)-[1,3,4]oxadiazole 
• 253878-40-9 2-[4-(bromomethyl)phenyl]-5-(4-tert-butylphenyl)-1,3,4-oxadiazole 
• 1267554-15-3 N-[2-(4-methylphenyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole]aza-18-crown-6 
• 253878-38-5 2-[4-(tert-butyl)phenyl]-5-(4-ethenylphenyl)-1,3,4-oxadiazole 
• 37430-94-7 2-(4-{4-[5-(4-tert-butyl-phenyl)-[1,3,4]oxadiazol-2-yl]-trans-styryl}-phenyl)-2H-naphtho[1,2-d][1,2,3]triazole 
• 59151-73-4 2-(4-tert-butyl-phenyl)-5-{4-[4-(2-phenyl-2H-[1,2,3]triazol-4-yl)-styryl]-phenyl}-[1,3,4]oxadiazole 
• 59151-81-4 2-(4-tert-butyl-phenyl)-5-{4-[4-(4-phenyl-[1,2,3]triazol-2-yl)-styryl]-phenyl}-[1,3,4]oxadiazole 
• 66140-12-3 2-(4-{4-[5-(4-tert-butyl-phenyl)-[1,3,4]oxadiazol-2-yl]-styryl}-phenyl)-[1,2,4]triazolo[1,5-a]pyridine 
• 52822-21-6 2-(4-tert-butyl-phenyl)-5-[4-(trans-2-dibenzofuran-3-yl-vinyl)-phenyl]-[1,3,4]oxadiazole 
• 59098-53-2 2-(4-tert-butyl-phenyl)-5-{4-[2-(2-phenyl-2H-[1,2,3]triazol-4-yl)-vinyl]-phenyl}-[1,3,4]oxadiazole 
• 65205-21-2 2-(4-tert-butyl-phenyl)-5-{4-[4-(4,5-diphenyl-[1,2,3]triazol-2-yl)-styryl]-phenyl}-[1,3,4]oxadiazole 
• 65205-17-6 2-(4-tert-butyl-phenyl)-5-{4-[4-(4-chloro-5-phenyl-[1,2,3]triazol-2-yl)-styryl]-phenyl}-[1,3,4]oxadiazole 
• 65205-04-1 2-(4-tert-butyl-phenyl)-5-{4-[4-(2,5-diphenyl-2H-[1,2,3]triazol-4-yl)-styryl]-phenyl}-[1,3,4]oxadiazole 
• 65238-73-5 2-(4-tert-butyl-phenyl)-5-{4-[4-(5-chloro-2-phenyl-2H-[1,2,3]triazol-4-yl)-styryl]-phenyl}-[1,3,4]oxadiazole 

Relevant academic research and scientific papers

Synthesis, photophysics of a novel green light emitting 1,3,4-oxadiazole and its application in FRET with ZnSe/ZnS QDs donor

The design and synthesis of a novel molecule 2-(4-((E)-2-(5-((E)-4-(5-(4-tert-butylphenyl)-1,3,4-oxadiazol-2-yl)styryl)thiophen-2-yl)vinyl)-5-(4-tert-butylphenyl)1,3,4-oxadiazole (2TVPO) based on Donor-π-Acceptor strategy through the Wittig reaction as well as characterization by 1H, 13C NMR spectroscopy, high resolution mass spectrometry and FT-IR spectroscopy form the central theme of the present work. Thermal (TGA and DSC), photophysical and electrochemical properties have been studied in detail for this novel probe. In addition, fluorescence resonance energy transfer (FRET) employing steady state and time resolved spectroscopy methods has been studied using core-shell ZnSe/ZnS QDs (7 and 8 nm) and 2TVPO fluorescent probe, respectively, as the energy donor and acceptor. Results of these studies reveal that (i) FRET pairs show a strong dipole-dipole interaction tendency to transfer energy from donor to acceptor; (ii) they possess high FRET efficiency and (iii) strong dependence of the acceptor emission on the overlap integral, quantum dot size and donor-acceptor distance. Further, the type of quenching is analyzed by Stern–Volmer plots.

Photophysical and Electrochemical Properties of Highly π-Conjugated Bipolar Carbazole-1,3,4-Oxadiazole-based D-π-A Type of Efficient Deep Blue Fluorescent Dye

In this contribution, we have designed and synthesized a novel carbazole-1,3,4-oxadiazole based bipolar fluorophore (E)-2-(4-(4-(9H-carbazol-9-yl)styryl)phenyl)-5-(4-(tertbutyl) phenyl)-1,3,4-oxadiazole (CBZ-OXA-IV). Wittig reaction is utilised for the synthesis of the designed bipolar target compound CBZ-OXA-IV.1H NMR, 13C NMR, FT-IR and ESI–MS results confirmed the designed chemical structure of the fluorophore CBZ-OXA-IV. The photophysical properties have been investigated in detail using UV–Vis absorption, photoluminescence spectroscopy. Also, the photoluminescence studies on solid state samples (as thin films) were carried out. The CBZ-OXA-IV dye emits intense deep blue fluorescence with observed absorption and emission maxima occurring are at 353?nm and 470?nm, respectively. Fluorophore CBZ-OXA-IV has shown high Stokes shift of 7052?cm?1. The experimentally measured optical band gap (Egopt) value is found to be 3.01?eV and the fluorescence quantum yields (Φf) is 0.40. The intramolecular charge transfer property of CBZ-OXA-IV dye was examined by using photophysical properties such as absorption, emission in different solvents of different varying polarities. In addition, Density Functional Theory computations are studied in detail including the MEP surface plots and natural bond orbital analysis. The electrochemical properties have been investigated in detail by using cyclic voltammetry measurements. Thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC) measurement results display a high thermal stability with decomposition temperature (Td5%) 387?°C and a large glass transition temperature (Tg) of 98?°C. The obtained results demonstrated that the novel bipolar fluorophore CBZ-OXA-IV could play an important role in organic optoelectronics and possibly can be utilized as bipolar transport materials for electroluminescence applications in optoelectronic devices/OLEDs. Graphical abstract: [Figure not available: see fulltext.]

Synthesis and rare earth metal ion-sensing properties of aza-crown derivative incorporating with diaryl-1,3,4-oxadiazole

A new fluorescent chemosensor (A18C6-Ox) in which a monoaza-18-crown-6 is linked to a diaryl-1,3,4-oxadiazole fluorophore by a methylene spacer has been synthesized to evaluate binding interaction with the rare earth ions by means of absorption and emission spectrophotometry. Absorption spectra of A18C6-Ox showed a broad band at 289 nm and there was no significant change in the presence of Sc3+, La3+, Pr3+, Sm3+, Gd3+, Tb3+, Yb3+ and Lu3+ except for Ce3+ and Eu3+. From the emission spectral change of A18C6-Ox, interaction of the rare earth ions with A18C6-Ox is very strong. The formation of A18C6-Ox complexing with Sc3+, La3+, Pr 3+, Sm3+, Gd3+, Tb3+, Yb 3+ and Lu3+ leads to an increase in fluorescence intensity of A18C6-Ox, while Ce3+ and Eu3+ ions interact strongly causing fluorescence quenching of A18C6-Ox. In addition, the optimal complexation stoichiometry of the rare earth ions with A18C6-Ox was investigated by the fluorescent titration.

Degenerate nonlinear absorption and optical power limiting properties of asymmetrically substituted stilbenoid chromophores

Two-photon absorption (2PA) spectra (650-1000 nm) of a series of model chromophores were measured via a newly developed nonlinear absorption spectral technique based on a single and powerful femtosecond white-light continuum beam. The experimental results suggested that when either an electron-donor or an electron-acceptor was attached to a trans-stilbene at a para-position, an enhancement in molecular two-photon absorptivity was observed in both cases, particularly in the 650-800 nm region. However, the push-pull chromophores with both the donor and acceptor groups showed larger overall two-photon absorption cross-sections within the studied spectral region as compared to their mono-substituted analogues. The combined results of the solvent effect and the 1H-NMR studies indicated that stronger acceptors produce a more efficient intramolecular charge transfer character upon excitation, leading to increased molecular two-photon responses in this model-compound set. A fairly good 2PA based optical power limiting behavior from one of the model chromophores is also demonstrated.

A field-dependent organic LED consisting of two new high Tg blue light emitting organic layers: A possibility of attainment of a white light source

Two new blue light emitting trimeric compounds of the Y-shape type having high glass transition temperatures were synthesized and EL behavior of LED devices consisting of bilayers of the two compounds was studied. One of the compounds is of hole-transporting type containing carbazole moieties, whereas the other is of electron-transporting type bearing phenyloxadiazole moieties. The bilayer LED devices exhibit a strong field-dependence and emit white light (simultaneous light-emittance in blue, green and red regions), at high applied electric fields. Increased interracial formation of exciplexes at stronger external fields appears to be responsible for this field-dependence.

Cooperative Enhancement of Two-Photon Absorption in Multi-branched Structures

Recent reports of molecular structures with considerably enhanced two-photon absorption cross-section have generated considerable interest in this phenomenon from both fundamental and applications perspectives. In this letter, we report cooperative enhanc