scholarly journals Synthesis, Chemosensory Properties, and Self-Assembly of Terpyridine-Containing Conjugated Polycarbazole through RAFT Polymerization and Heck Coupling Reaction

Polymers ◽  
2017 ◽  
Vol 9 (12) ◽  
pp. 427 ◽  
Author(s):  
◽  
◽  
◽  
◽  
◽  
...  
Keyword(s):  
Self Assembly ◽  
Raft Polymerization ◽  
Coupling Reaction ◽  
Heck Coupling

scholarly journals Synthesis and Application in Cell Imaging of Acridone Derivatives

2020 ◽  
Vol 10 (23) ◽  
pp. 8708
Author(s):  
Yung-Chieh Chan ◽  
Chia-Ying Li ◽  
Chin-Wei Lai ◽  
Min-Wei Wu ◽  
Hao-Jui Tseng ◽  
...  
Keyword(s):  
Self Assembly ◽  
Cell Imaging ◽  
Light Emission ◽  
Water Solution ◽  
Fluorescence Emission ◽  
Coupling Reaction ◽  
Heck Coupling ◽  
Innovative Design ◽  
Cell Compatibility ◽  
Acridone Derivatives

Tricyclic acridone derivatives have been extensively developed as antimicrobial, antimalarial, and antitumor drugs due to their broad spectrum of drug design and biological activity. In this study, we developed a surfactant-like acridone scaffold that contained two vinylpyridines and a dodecyl pyridine chain. The acridone scaffold decorated the dodecyl pyridine chain by N-bromosuccinimide reagent. The surfactant-like core scaffold incorporated with 4-vinylpyridines at the 2- and 7-positions via a Heck coupling reaction. Subsequently, the acridone derivatives were methylated onto these pyridine groups. Here we developed two similar acridone derivatives, MedAcd12C and MedAcd12P. The MedAcd12C incorporated two pyridine groups, and MedAcd12P incorporated three pyridine groups. MedAcd12C and MedAcd12P have two identical vinylpyridines and the different anchor tails at the N10 position. Their physicochemical properties, cell compatibility, and photoluminescence were demonstrated. Although both compounds have no fluorescence emission in water solution, MedAcd12P and MedAcd12C significantly appeared with orange light emission in the cellular imaging. We suggested that the surfactant-like scaffold promoted the drugs’ self-assembly and caused the aggregation-induced emission (AIE) after cellular uptake. This innovative design endowed acridone derivatives with an AIE and traceability for cell imaging.

Self-assembly multi-layer of diazonium resin and its coupling reaction with J-acid and H-acid

2007 ◽  
Vol 72 (3) ◽  
pp. 345-348 ◽  
Author(s):  
Young-A. Son ◽  
Young-Min Park ◽  
Chang-Ju Shin ◽  
Sung-Hoon Kim
Keyword(s):  
Self Assembly ◽  
Coupling Reaction

Fabrication of covalently attached conducting multilayer self-assembly film of polyaniline by in situ coupling reaction

2002 ◽  
Vol 128 (3) ◽  
pp. 305-309 ◽  
Author(s):  
Yongjun Zhang ◽  
Ying Guan ◽  
Jin Liu ◽  
Jian Xu ◽  
Weixiao Cao
Keyword(s):  
Self Assembly ◽  
Coupling Reaction

Synthesis and Characterization of Novel PEPPSI type Pd–BICAAC Complexes

2022 ◽  
Author(s):  
Márton Nagyházi ◽  
Balázs Almási ◽  
Ádám Lukács ◽  
Attila Bényei ◽  
Tibor Nagy ◽  
...  
Keyword(s):  
High Activity ◽  
Coupling Reaction ◽  
Kinetic Studies ◽  
Elemental Mercury ◽  
Palladium Complexes ◽  
Synthesis And Characterization ◽  
Heck Coupling ◽  
Moisture Resistant

A series of bicyclic alkylamino carbenes (BICAAC) (where N-aryl = dipp, mes, 2,6-dimethyl-4-(dimethylamino)phenyl, 5a-d) and their novel air- and moisture-resistant pyridine (pyridine, 4 dimethylaminopyridine) containing palladium PEPPSI-type Pd(II) complexes (6a-e) were synthetized and characterized. The new palladium complexes have shown high activity in Mizoroki–Heck coupling reaction even at as low as 100 ppm loading (TON up to 10000). Kinetic studies revealed that reactions carried out in the presence of elemental mercury resulted in decrease in activity. It indicates that the coupling reaction may have both molecular and Pd(0)-mediated catalytic paths.

An expedient approach to enhance Mizoroki-Heck coupling reaction by infrared irradiation using palladacycle compounds

2015 ◽  
Vol 29 (8) ◽  
pp. 556-560 ◽  
Author(s):  
Fernando Ortega-Jiménez ◽  
Francisco X. Domínguez-Villa ◽  
Alfredo Rosas-Sánchez ◽  
Guillermo Penieres-Carrillo ◽  
José G. López-Cortés ◽  
...  
Keyword(s):  
Coupling Reaction ◽  
Heck Coupling ◽  
Infrared Irradiation

scholarly journals Organic Nanoparticles Based on D-A-D Small Molecule: Self-Assembly, Photophysical Properties, and Synergistic Photodynamic/Photothermal Effects

Materials ◽  
2022 ◽  
Vol 15 (2) ◽  
pp. 502
Author(s):  
Liangliang Yue ◽  
Haolan Li ◽  
Qi Sun ◽  
Xiaogang Luo ◽  
Fengshou Wu ◽  
...  
Keyword(s):  
Self Assembly ◽  
Organic Molecule ◽  
High Efficiency ◽  
Photophysical Properties ◽  
Coupling Reaction ◽  
Ros Generation ◽  
Dead Cell ◽  
Minimal Invasiveness ◽  
Sonogashira Coupling Reaction ◽  
Potential Strategy

Cancer is one of the major diseases threatening human health. Traditional cancer treatments have notable side-effects as they can damage the immune system. Recently, phototherapy, as a potential strategy for clinical cancer therapy, has received wide attention due to its minimal invasiveness and high efficiency. Herein, a small organic molecule (PTA) with a D-A-D structure was prepared via a Sonogashira coupling reaction between the electron-withdrawing dibromo-perylenediimide and electron-donating 4-ethynyl-N,N-diphenylaniline. The amphiphilic organic molecule was then transformed into nanoparticles (PTA-NPs) through the self-assembling method. Upon laser irradiation at 635 nm, PTA-NPs displayed a high photothermal conversion efficiency (PCE = 43%) together with efficient reactive oxygen species (ROS) generation. The fluorescence images also indicated the production of ROS in cancer cells with PTA-NPs. In addition, the biocompatibility and photocytotoxicity of PTA-NPs were evaluated by 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay and live/dead cell co-staining test. Therefore, the as-prepared organic nanomaterials were demonstrated as promising nanomaterials for cancer phototherapy in the clinic.

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