63899-32-1Relevant articles and documents
3D-Encapsulated iridium-complexed nanophosphors for highly efficient host-free organic light-emitting diodes
Han, Fuquan,Zhang, Xiaolin,Zhang, Jing,Wei, Ying,Zhang, Xinwen,Huang, Wei,Xu, Hui
, p. 5183 - 5186 (2016)
Iridium-complexed nanosize phosphors 3D-encapsulated with nine 3,6-di-tert-butyl-N-propyl-carbazole groups were constructed as host-dopant integrated systems, which achieved a high photoluminescence quantum yield beyond 70% from neat evaporated films, and
Synthesis of new ESIPT-fluorescein: Photophysics of pH sensitivity and fluorescence
Patil, Vikas S.,Padalkar, Vikas S.,Phatangare, Kiran R.,Gupta, Vinod D.,Umape, Prashant G.,Sekar, Nagaiyan
, p. 536 - 545 (2012)
ESIPT-inspired benzimidazolyl substituted fluorescein dyes were synthesized. PH-sensitivity was determined by the photophysical property measured at a physiological possible pH range. Fluorescence quantum efficiency values were calculated independently at two different emissions. A rational relationship is defined between fluorescence quantum efficiency and calculated HOMO energy.
Novelmeta-benzothiazole and benzimidazole functionalised POCOP-Ni(ii) pincer complexes as efficient catalysts in the production of diarylketones
Castillo-García, Antonio A.,González-Sebastián, Lucero,Lomas-Romero, Leticia,Hernandez-Ortega, Simon,Toscano, Ruben A.,Morales-Morales, David
, p. 10204 - 10216 (2021/06/18)
The synthesis of four novel non-symmetric Ni(ii)-POCOP pincer complexesmeta-functionalized with either benzothiazole or benzimidazole at the central aryl ring is described. All complexes were fully characterised in solution by various analytical techniques and the molecular structures in the solid state of complexes1b,2aand2bwere unequivocally determined by single crystal X-ray diffraction analysis. In addition, the Ni(ii)-POCOP pincer complexes were efficiently used as catalysts in the synthesis of diarylketones by cross-coupling reactions of functionalized benzaldehydes and boronic acid derivatives under relatively mild conditions. An important aspect of this transformation is the dependence on the steric properties of the donor groups (OPR2) of the pincer ligands, the more active compounds having the phosphinitos bearing isopropyl groups (1aand2a) than those containingtert-butyl substituents (1band2b).
Lysosome-specific sensing and imaging of pH variations in vitro and in vivo utilizing a near-infrared boron complex
Shi, Yuxiang,Meng, Xiangchun,Yang, Huiran,Song, Linna,Liu, Shujuan,Xu, Aqiang,Chen, Zejing,Huang, Wei,Zhao, Qiang
, p. 3569 - 3575 (2019/06/13)
As a focus issue, the study of lysosomal pH has attracted much attention as it is closely associated with the state of lysosome, which plays a vital role in endocytosis and autophagy. In order to investigate the lysosomal pH, fluorescence bioimaging is one of the most widely-explored approaches. Unfortunately, the probes are insufficient to absorb or emit in the near-infrared (NIR) region, which could minimize photodamage to organisms and maximize tissue penetration in living systems. As a novel family of NIR dyes, hemicyanine has been selected for NIR bioimaging and biosensing owing to its excellent optical properties, easy preparation and good biocompatibility. Employing a classic rhodamine-hemicyanine hybrid, we first designed and synthesized a NIR boron complex (HCy-BIZ-BF2) with lysosome-targeting and pH-sensing properties. It is worth mentioning that after HCy-BIZ was coordinated with boron fluoride, HCy-BIZ-BF2 exhibited an improved photostability as well as an enlarged Stokes shift, and was subsequently applied to monitor the lysosomal pH in cells stimulated with chloroquine. Further investigation of pH changes in mice illustrated that HCy-BIZ-BF2 performed well in detecting the pH in living organisms. Therefore, this concept of boron complex derived from hemicyanine is not only applicable in pH detection, but also conducive for preparing promising novel NIR bioprobes and obtaining precise measurements of physiological parameters in specific physiological processes.
4,5-Imidazoledicarboxylic acid immobilized on Fe3O4 magnetic nanoparticles: Preparation, characterization, and application as a recyclable and efficient nanocatalyst in the sonochemical condensation reaction
Shah Hosseini, Mohadesseh,Ghafuri, Hossein,Esmaili Zand, Hamid Reza
, p. 850 - 855 (2018/03/21)
A green synthesis of benzimidazole derivatives using recyclable magnetic 4,5-imidazoledicarboxylic is described. The magnetic 4,5-imidazoledicarboxylic (Fe3O4@ImDCA) nanocatalyst was characterized completely by infrared spectroscopy
Hemicyanine-structured near infrared dye as well as preparation method and application of hemicyanine-structured near infrared dye
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Paragraph 0035; 0036; 0037, (2017/08/26)
The invention provides a hemicyanine-structured near infrared dye as well as a preparation method and application of the hemicyanine-structured near infrared dye. The structural formula of the dye is represented by formula I (shown in the description), wherein R1 represents C1-C32 linear, branched or cyclic alkyl, and R2 represents one of hydrogen, bromine, methoxyl, N,N-dimethylamino, ethyoxyl, hydroxyl, carboxyl methoxy or acetyl methoxy. The dye is prepared through the reaction of a Cy7 cyanine dye and resorcinol with benzimidazole. By introducing a benzimidazole group, the prepared dye is capable of absorbing and emitting in a near infrared region and responds to the pH value of the environment.
Design, synthesis and biological evaluation of novel hydroxy-phenyl-1H-benzimidazoles as radical scavengers and UV-protective agents
Bino, Alessia,Baldisserotto, Anna,Scalambra, Emanuela,Dissette, Valeria,Vedaldi, Daniela Ester,Salvador, Alessia,Durini, Elisa,Manfredini, Stefano,Vertuani, Silvia
, p. 527 - 537 (2017/11/10)
An ever-increasing incidence of skin neoplastic diseases is registered. Therefore, it is important to protect the skin from the UV radiation that reaches the epidermis and dermis but also to block ROS generated by them. Our attention was attracted in deve
Synthesis, characterization, and antibacterial activity of novel (1H-Benzo[d]imidazole-2-yl)-6-(diethylamino)-3H-one-xanthene, phenoxazine, and oxazine
Patil, Vikas S.,Padalkar, Vikas S.,Phatangare, Kiran R.,Umape, Prashant G.,Borase, Bhushan N.,Sekar
, p. 124 - 129 (2015/01/30)
A series of novel (1H-benzo[d]imidazole-2-yl)-6-(diethylamino)-3H-one-xanthene, phenoxazine, and oxazine derivatives have been synthesized from 2-(2',4'-dihydroxyphenyl) benzimidazole intermediate. Synthesized compounds 8a-8d are fluorescent in solution,
NOVEL COMPOUND HAVING SKIN-WHITENING, ANTI-OXIDIZING AND PPAR ACTIVITIES AND MEDICAL USE THEREFOR
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Paragraph 0199-0203; 0205, (2014/02/16)
Provided are a novel compound having skin-whitening, anti-oxidizing and PPAR activities and a medical use thereof, and the compound has skin-whitening activities for the suppression of tyrosinase, and accordingly, is useful for use in skin-whitening pharmaceutical composition or cosmetic products; has anti-oxidant activities, and accordingly, is useful for the prevention and treatment of skin-aging; and has PPAR activities, and in particular, PPARα and PPARγ activities, and accordingly, is useful for use in pharmaceutical compositions or health foods which are effective for the prevention and treatment of obesity, metabolic disease, or cardiovascular disease.
DUALISTIC MOLECULES HAVING UV RADIATION FILTRATING ABILITY AT WIDE SPECTRUM AND POTENT DAMPING ACTIVITY OF THE REACTIVITY OF FREE RADICALS (RADICAL SCAVENGING)
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Paragraph 0142; 0143; 0087, (2015/01/06)
Compound with structure 2-phenylbenzimidazole of formula I and/or a pharmaceutically acceptable salt thereof, wherein said compound of formula I corresponds to: in which n is 1, 2 or 3 and in which R is a carboxyl radical (—COOH) or a sulphonic radical (—