Two new isolated Zn-ε-Keggin clusters modified by conjugated organic ligands with decent electrocatalytic and third-order NLO properties

2020 ◽  
Vol 49 (40) ◽  
pp. 14251-14257
Author(s):  
Xiao-Mei Liu ◽  
Fan-Qiong Meng ◽  
Wei-Wei Cheng ◽  
Jia-Peng Cao ◽  
Ji-Lei Wang ◽  
...  

Compound 2 is the first isolated Zn5PMo12 cluster, and the two Zn-ε-Keggin-based compounds display excellent electrocatalytic and third-order NLO properties.

2016 ◽  
Vol 20 (08n11) ◽  
pp. 1173-1181 ◽  
Author(s):  
Narra Vamsi Krishna ◽  
Puliparambil Thilakan Anusha ◽  
S. Venugopal Rao ◽  
L. Giribabu

Zinc phthalocyanine possessing triphenylamine at its peripheral position has been synthesized and its optical, emission, electrochemical and third-order nonlinear optical (NLO) properties were investigated. Soret band was broadened due to the presence of triphenylamine moiety. Electrochemical properties indicated that both oxidation and reduction processes were ring centered. Emission spectra were recorded in different solvents and the fluorescence yields obtained were in the range of 0.02–0.17 while the time-resolved fluorescence data revealed radiative lifetimes of typically few ns. Third-order NLO properties of this molecule have been examined using the Z-scan technique with picosecond (ps) and femtoseocnd (fs) pulses. Closed and open aperture Z-scan data were recorded with 2 ps/1 50 fs laser pulses at a wavelength of 800 nm and NLO coefficients were extracted from both the data. Our data clearly suggests the potential of this molecule for photonics applications.


2010 ◽  
Vol 375 (1) ◽  
pp. 1-7 ◽  
Author(s):  
K. Bouchouit ◽  
E.E. Bendeif ◽  
H. EL Ouazzani ◽  
S. Dahaoui ◽  
C. Lecomte ◽  
...  

Nanoscale ◽  
2014 ◽  
Vol 6 (3) ◽  
pp. 1871-1878 ◽  
Author(s):  
Liang Wang ◽  
Yanli Chen ◽  
Jianzhuang Jiang
Keyword(s):  

2014 ◽  
Vol 117 (3) ◽  
pp. 469-473 ◽  
Author(s):  
S. Manikandan ◽  
T. C. Sabari Girisun ◽  
R. Mohandoss ◽  
S. Dhanuskodi ◽  
S. Manivannan

1995 ◽  
Vol 5 (2) ◽  
pp. 261 ◽  
Author(s):  
A. S. Dhindsa ◽  
A. E. Underhill ◽  
S. Oliver ◽  
S. Kershaw

2009 ◽  
Vol 13 (02) ◽  
pp. 275-282 ◽  
Author(s):  
Ning Sheng ◽  
Jing Sun ◽  
Yongzhong Bian ◽  
Jianzhuang Jiang ◽  
Dong Xu

Novel heteropentameric porphyrins-pyrene arrays, in which four meso-tetraphenyl porphyrins are linked to the center unit of pyrene by four acetylenyl bonds, were designed and synthesized. The newly synthesized heteropentameric compounds have been characterized by a wide range of spectroscopic methods. The third-order nonlinear optical (NLO) properties of both the metal-free and zinc compounds of the three-dimensional arrays were investigated by Z-scan experiments, showing enhanced NLO properties compared with that of the porphyrin and pyrene monomers.


2007 ◽  
Vol 19 (3) ◽  
pp. 356-367 ◽  
Author(s):  
Najun Li ◽  
Jianmei Lu ◽  
Qingfeng Xu ◽  
Xuewei Xia ◽  
Lihua Wang

Author(s):  
Huey Chong Kwong ◽  
M. S. Rakesh ◽  
C. S. Chidan Kumar ◽  
Shivaraj R. Maidur ◽  
Parutagouda Shankaragouda Patil ◽  
...  

AbstractIn the present work, the crystal structure and third-order nonlinear optical (NLO) properties of two novel chalcone derivatives namely (E)-3-(4-bromo-2-fluorophenyl)-1-(3,4-dimethoxyphenyl)prop-2-en-1-one (


2018 ◽  
Vol 27 (02) ◽  
pp. 1850016 ◽  
Author(s):  
K. Vijai Anand ◽  
G. Vinitha ◽  
Sanjeev Gautam ◽  
K. H. Chae ◽  
R. Mohan ◽  
...  

This study reports the third-order nonlinear optical (NLO) properties of hexamethylenetetramine (HMTA) stabilized pure and transition metals (Cu, Co and Mn) doped ZnS nanoparticles (NPs) and their electronic structures. The third-order NLO properties of pure and transition metals (Cu, Co and Mn) doped ZnS NPs were measured by [Formula: see text]-scan technique. From these measurements, the pure and doped ZnS samples exhibit negative nonlinearity i.e., self-defocusing. The open aperture [Formula: see text]-scan measurement shows saturated absorption within the medium. The prepared pure and doped ZnS samples exhibit nonlinear refractive index of the order of 10[Formula: see text][Formula: see text](cm2/W), nonlinear absorption (NLA) coefficient of the order of 10[Formula: see text][Formula: see text]cm/W and nonlinear optical susceptibility of the order of 10[Formula: see text][Formula: see text]esu. The electronic structures of these ZnS NPs were investigated using near edge X-ray absorption fine structure (NEXAFS) measurements at the C K-, N K- and Co L[Formula: see text]-edges. The C K- and N K-edges XANES spectra reveal the appearance of several spectral features in the range 285–290[Formula: see text]eV and 390–430[Formula: see text]eV respectively. The Co L[Formula: see text]-edge NEXAFS spectrum exhibits multiplet absorption lines similar to those of Co[Formula: see text] ions coordinated in tetrahedral symmetry with four sulfur nearest neighbors. These results clearly demonstrate that divalent Co ions substitute Zn sites. From the Raman spectra, the appearance of multiple resonance Raman peaks indicates that the prepared ZnS samples have good optical quality.


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