167482-98-6Relevant articles and documents
The highly efficient and stable Cu, Co, Zn-porphyrin–TiO2 photocatalysts with heterojunction by using fashioned one-step method
Zhao, Xin,Liu, Xiao,Yu, Mimi,Wang, Chen,Li, Jun
, p. 648 - 656 (2017)
A new series of carboxyl porphyrins with different center metals (Cu, Co, Zn) insertion has been successfully synthesized. Their corresponding CuCPp–TiO2, CoCPp–TiO2, and ZnCPp–TiO2 photocatalysts were obtained under a one-pot solvothermal condition. Characterization of these composites can be achieved by both spectroscopic techniques and nitrogen adsorption–desorption measurements. The findings indicate that the MCPp–TiO2 (M(II)?=?Cu, Co, Zn) composite photocatalysts, formed by the accumulation of disperse spherical nanoparticles, possess heterogeneous structure and large surface area, resulting in the photodegradation of 4-nitrophenol (4-NP) efficiently. The metalloporphyrins with carboxyl group display superior catalytic activities due to the strong interactions between [sbnd]COOH and TiO2. The order for the photocatalytic activities is as follows: CuCPp–TiO2?>?CoCPp–TiO2?≥?ZnCPp–TiO2?>?bare TiO2. The reason for the high photocatalytic activity in CuCPp–TiO2 photocatalyst can possibly be explained by the fact that Cu(II) is more readily gaining an electron to reach a steady state, causing the isolation of electrons with holes compare to Co(II) and Zn(II) in MCPp–TiO2 composites. This possible mechanism of photocatalytic efficiencies was proposed based on the multiple tests. The findings of MCPp–TiO2 photocatalysts tests suggested that the metalloporphyrin-based MCPp–TiO2 composite photocatalysts are capable of maintaining superior stability in photocatalysis experiments even after six times cycling.
A C84 selective porphyrin macrocycle with an adaptable cavity constructed through alkyne metathesis
Zhang, Chenxi,Long, Hai,Zhang, Wei
, p. 6172 - 6174 (2012)
A bisporphyrin macrocycle was constructed from a porphyrin-based diyne monomer in one step through alkyne metathesis. The fullerene binding studies (C60, C70 and C84) showed the highest binding affinity of the macrocycle for C84, which is in great contrast to its bisporphyrin four-armed cage analogue that showed the strongest binding with C70.
Synthesis, structure, photophysical, electrochemical properties and antibacterial activity of brominated BODIPYs
Prasannan, Dijo,Raghav, Darpan,Sujatha, Subramaniam,Hareendrakrishna Kumar, Haritha,Rathinasamy, Krishnan,Arunkumar, Chellaiah
, p. 80808 - 80824 (2016/09/09)
A series of mono- and di-brominated BODIPYs (1-5) was synthesized and characterized with a view to study the performance of dyes towards antibacterial activity. Regioselective bromination at the 2- and 2,6-positions of the BODIPY core was achieved with quantitative yield. The bromination of meso-(4-hydroxyphenyl) BODIPY (5) yielded an unexpected dibromo derivative, where the bromine groups were installed at the 3,5-positions of the phenyl ring rather than the 2,6-positions of the BODIPY core, which is confirmed and supported by UV-visible, fluorescence, and 1H NMR spectroscopic analyses, electrochemical studies, and also by single crystal X-ray crystallography. We observed a red shift of ～16 nm in the absorption and 20-29 nm in the emission spectra in CH2Cl2 for the installation of each bromine group at the BODIPY core. The small difference between the first reduction potentials of the parent and dibromo derivative (5 and 5b) reveal that dibromination does not occur on the pyrrolic moiety. The intermolecular interactions involving C?H, F?H, H?H, and Br?H are the key factors in stabilizing the molecular crystal packing. The antibacterial properties of these dyes were investigated and the brominated derivatives showed better antibacterial effects than their corresponding parent BODIPYs, particularly the unusual dibromo derivative, 5b.
