Highly porous aluminophosphates with unique three dimensional open framework structures from mild hydrothermal syntheses

CrystEngComm ◽  
2020 ◽  
Vol 22 (17) ◽  
pp. 3070-3078
Author(s):  
Yucheng Hao ◽  
Yang Pan ◽  
Yuan Lin ◽  
Linbo He ◽  
Guangjie Ge ◽  
...  

Three novel highly porous aluminophosphates were synthesized through mild hydrothermal methods. Interestingly, among them, α-NaAlPO4(OH) is polar and exhibits moderate nonlinear optical properties with a short cutoff edge.

2013 ◽  
Vol 68 (12) ◽  
pp. 744-750 ◽  
Author(s):  
Muharrem Kirak ◽  
Sait Yilmaz

A theoretical study of the electronic properties of the ground state and excited states and the linear and the third-order nonlinear optical properties (i. e., absorption coefficients and refractive indices) in a spherical GaAs pseudodot system is reported. The variational procedure has been employed in determining sublevel energy eigenvalues and their wave functions within the effective mass approximation. Our results indicate that the chemical potential of the electron gas and the minimum value of the pseudoharmonic potential have a great influence on the electrical and optical properties of hydrogenic impurity states. Also, we have found that the magnitudes of the absorption coefficient and the refractive index change of the spherical quantum dot increase for transitions between higher levels.


2008 ◽  
Vol 61 (20) ◽  
pp. 3189-3199 ◽  
Author(s):  
Zhao Rui Pan ◽  
You Cai Zhang ◽  
Ying Lin Song ◽  
Xin Zhuo ◽  
Yi Zhi Li ◽  
...  

2019 ◽  
Vol 58 (5) ◽  
pp. 3527-3534 ◽  
Author(s):  
Qi Wei ◽  
Chao He ◽  
Bang-Di Ge ◽  
Meng-Xin Wan ◽  
Li Wei ◽  
...  

2019 ◽  
Vol 75 (1) ◽  
pp. 107-114 ◽  
Author(s):  
Hamza Athmani ◽  
Christian Kijatkin ◽  
Rim Benali-Cherif ◽  
Sébastien Pillet ◽  
Dominik Schaniel ◽  
...  

The structural and nonlinear optical properties of a new anilinium hybrid crystal of chemical formula (C6H7NCl+·NO3 −)3 have been investigated. The crystal structure was determined from single-crystal X-ray diffraction measurements performed at a temperature of 100 K which show that the compound crystallizes in a noncentrosymmetric space group (Pna21). The structural analysis was coupled with Hirshfeld surface analysis to evaluate the contribution of the different intermolecular interactions to the formation of supramolecular assemblies in the solid state that exhibit nonlinear optical features. This analysis reveals that the studied compound is characterized by a three-dimensional network of hydrogen bonds and the main contributions are provided by the O...H, C...H, H...H and Cl...H interactions, which alone represent ∼85% of the total contributions to the Hirshfeld surfaces. It is noteworthy that the halogen...H contributions are quite comparable with those of the H...H contacts. The nonlinear optical properties were investigated by nonlinear diffuse femtosecond-pulse reflectometry and the obtained results were compared with those of the reference material LiNbO3. The hybrid crystals exhibit notable second (SHG) and third (THG) harmonic generation which confirms its polarity is generated by the different intermolecular interactions. These measurements also highlight that the THG signal of the new anilinium compound normalized to its SHG counterpart is more pronounced than for LiNbO3.


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