1005-02-3Relevant articles and documents
A Novel Ratiometric Oxygen Sensor Based On a Sextuple Hydrogen-Bonding Self-Assembly Molecular Heterodimer
Zeng, Hui,Zhang, Cheng,Huang, Yan,Lu, Zhiyun
, p. 873 - 877 (2016)
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%.
Synthesis and Properties of Main-Chain Phosphorescent Polymer with Iridium Complex
Chen, L.,Li, D.,Lin, M.,Ling, Q.,Liu, Ch.,Xing, G.
, p. 2504 - 2511 (2019)
The main-chain phosphorescent polymers, PFCzIr(PhStz) and PFOIr(PhStz) with iridium complex (4-BrPhBt)2Ir(Pytz), are synthesized by the Suzuki polycondensation, in which the fluorene-carbazole and fluorene segments are used as a polymer backbon
Synthesis of isobornylphenol-containing 3-aryl-1,2,4-triazin-5(4H)-ones
Egorov,Chupakhin,Berezin,Rusinov,Rusinov,Buravlev,Chukicheva,Kuchinc
, p. 914 - 918 (2011)
A method for modification of 3-aryl-1,2,4-triazin-5(4H)-ones with isobornylphenols was proposed. The influence of various acylating agents on the reaction pathway was studied.
Synthesis, crystal structure, bovine serum albumin binding studies of 1,2,4-triazine based copper(I) complexes
Pathaw, Larica,Khamrang, Themmila,Kathiravan, Arunkumar,Velusamy, Marappan
, (2020)
A series of new copper complexes have been synthesized and completely characterized by pivotal analytical techniques. The coordination geometry around copper(I) complex was best described as distorted tetrahedral geometry. The binding of bovine serum albumin with Cu(I) complexes are also been investigated. The Stern–Volmer analysis on quenching data exhibits the presence of the static quenching mechanism. The binding constants were calculated using modified Stern-Volmer, Lineweaver–Burk and Scatchard plots. All the complexes exhibit the binding constants in the order of 104. Thus, these results can contribute to the development of Cu(I) based drugs.
Useful preparation of 6-phenyl-2,2′-bipyridine ligands bearing di-n-butylaminophenyl or gallate derivatives substituted in the 3- or 4-positions
Diring, Stéphane,Retailleau, Pascal,Ziessel, Raymond
, p. 3027 - 3031 (2007)
A simple protocol for the efficient preparation of substituted 6-phenyl-2,2′-bipyridine derivatives is described. A reverse type of Diels-Alder reaction between a 6-phenyl-2-pyridyl-1,3,4-triazine and 4-N,N-di-n-butylaminophenyl- or gallate-ethynyl derivatives at high temperature provide a mixture of two products easily separable by column chromatography. A variety of ligands suitable for the synthesis of cyclometalated platinum complexes have been produced. Additional substitution of the Pt-Cl by various donor-acceptor ethynyl fragments is feasible by mean of copper(I) catalysis. Georg Thieme Verlag Stuttgart.
The blue phosphorescent iridium complexes containing new triazole ligands for OLEDs
Ahn, So Youn,Ha, Yunkyoung
, p. 59 - 66 (2009)
For the application to organic light-emitting diodes (OLEDs), the blue light emitting iridium complexes containing a new triazole (trzl) ancillary ligand were prepared and their photophysical properties was studied with respect to substituent effect at th
A Modular Class of Fluorescent Difluoroboranes: Synthesis, Structure, Optical Properties, Theoretical Calculations and Applications for Biological Imaging
Bachollet, Sylvestre P. J. T.,Volz, Daniel,Fiser, Béla,Münch, Stephan,R?nicke, Franziska,Carrillo, Jokin,Adams, Harry,Schepers, Ute,Gómez-Bengoa, Enrique,Br?se, Stefan,Harrity, Joseph P. A.
, p. 12430 - 12438 (2016)
Ten borylated bipyridines (BOBIPYs) have been synthesized and selected structural modifications have been made that allow useful structure–optical property relationships to be gathered. These systems have been further investigated using DFT calculations and spectroscopic measurements, showing blue to green fluorescence with quantum yields up to 41 %. They allow full mapping of the structure to determine where selected functionalities can be implemented, to tune the optical properties or to incorporate linking groups. The best derivative was thus functionalised with an alkyne linker, which would enable further applications through click chemistry and in this optic, the stability of the fluorophores has been evaluated.
1,2,4-Triazole derivatives as host materials for blue and green phosphorescent organic light-emitting devices
Xu, Huixia,Sun, Peng,Wang, Kexiang,Miao, Yanqin,Yang, Tingting,Wang, Hua,Xu, Bingshe,Wong, Wai-Yeung
, p. 4408 - 4413 (2016)
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.
Luminescence comparison of iridium(III) complexes containing symmetric vs. asymmetric quinolinate ligands
Park, Hye Rim,Ha, Yunkyoung
, p. 67 - 74 (2011)
We have focused our research on development of the iridium complexes, especially with respect to blue and red emission for OLED. Previously, we prepared bis-[2,3-bis(4-fluorophenyl)quinoxalinato]iridium(acetylacetonate) [Ir(2,3-dpqx-F2)2/
Synthesis, structural, DFT calculations and biological studies of rhodium and iridium complexes containing azine Schiff-base ligands
Adhikari, Sanjay,Sutradhar, Dipankar,Shepherd, Samantha L.,Phillips, Roger M.,Chandra, Asit K.,Rao, K. Mohan
, p. 404 - 414 (2016)
The reaction of [Cp*MCl2]2(M?=?Rh/Ir) with N–N′ azine Schiff-base ligands (L1–L4) leads to the formation of mononuclear cationic half-sandwich complexes having the general formula [Cp*M(L)Cl]+(1–8), (M?=?Rh/Ir and L?=?(2-hydroxy-4-methoxybenzylidene)2-pyridylamidrazone (L1), (2-hydroxybenzylidene)2-pyridylamidrazone (L2), (1-(2-hydroxyphenyl)ethylidene)2-pyridylamidrazone (L3) and (1-phenylethylidene)2-pyridylamidrazone (L4). All these complexes were isolated as their hexafluorophosphate salts and fully characterized by spectroscopic and analytical techniques. The molecular structure of complexes (1), (3), (4), (7) and (8) have been determined by single crystal X-ray crystallographic studies which displayed the coordination of the ligand to the metal in a bidentate N∩N fashion through nitrogen atom of pyridine and one azine nitrogen. The chemo-sensitivity activities of the complexes were evaluated against HT-29 (human colorectal cancer) cell line and non-cancer cell line ARPE-19 (human retinal epithelial cells) which revealed that the complexes are moderately cytotoxic to cancer cells over human cells although complex 5 was the most potent among all the compounds. Theoretical studies carried out using DFT and TD-DFT at B3LYP level shows good agreement with the experimental results.
