Wyniki wyszukiwania - BazTech

1

Vibrational Spectra, Phase Transition and Nonlinear Optical Properties of Anilinium Perchlorate Molecular-Ionic Solid

Marchewka M., Debrus S., Drozd M., Baran J., Barnes A. J., Xue D., Ratajczak H.

Polish Journal of Chemistry

|

2003

|

Vol. 77 / nr 11

1625-1636

EN

Crystals of anilinium perchlorate, C6H5NH ClO 3 4 + , were obtained by slow evaporation of an aqueous solution at room temperature. Powder Kurtz-Perry measurements were performed for the title material. The efficiency of second harmonic generation was estimated relative to KDP: d = 0.21dKDP. Room temperature powder infrared and Raman measurements for the title solid and its deuterated analogue were carried out. The vibrational spectra in the regions of the internal vibrations of the ions corroborate the X-ray data (reported by Paixao et al. [1]). Differential scanning measurements performed on the powder sample indicate a first order phase transition at about 220 K.Apossible mechanism of the phase transition is suggested in relation to disorder of the hydrogen atoms on nitrogen atoms (reported in [1]). The role of the aniline molecule in the second harmonic generation is discussed.

2

Second harmonic generation properties of potassium hydrogen bis-trichloroacetate crystal

Ratajczak H., Baran J., Debrus S.

Bulletin of the Polish Academy of Sciences. Chemistry

|

2001

|

Vol. 49, No. 4

261-264

EN

The SHG property was determined for the powder sample of potassium hydrogen bis-trichloroacetate crystal using the Kurtz-Perry method. SHG efficiency relative to KDP appears to be 0.57.

3

Second harmonic generation properties of [CH3NH3]5Bi2Br11 ferroelectric crystal

Ratajczak H., Debrus S., Jakubas R., Baran J.

Bulletin of the Polish Academy of Sciences. Chemistry

|

2000

|

Vol. 48, No. 3

193-194

EN

The SHG properties were determined for the powder samples of the [ChaNH3](5)Bi(2) Br(11)compound using the Kurtz-Perry method. SHG efficiency relative to KDP appears to be 0.4.

4

Novel inorganic hydrogen-bonded crystals with nonlinear optical properties

Baran J., Debrus S., May M., Ratajczak H.

Bulletin of the Polish Academy of Sciences. Chemistry

|

2000

|

Vol. 48, No. 2

113-116

EN

Four inorganic hydrogen-bonded crystals with second-order nonlinear properties have been discovered: K4LiH3(SO4)4, Na(2)SeO(4)o H(2)SeO(3) o H(2)O, Cs(1), (5)Li and NH4HSeO4.

5

Hydrogen-bonded organic solids with nonlinear optical properties

Ratajczak H., Debrus S., May M., Barycki J., Baran J.

Bulletin of the Polish Academy of Sciences. Chemistry

|

2000

|

Vol. 48, No. 3

189-192

EN

Nonlinear Optical Properties for eight organic crystals (1-acetyloamino-1-phenyl methylphosphonous, 1- aminoethylphosphonic acid, [N-benzylamino)methyl] phenylo phosphonic acid, hippuric acid (benzaminoacetic acid), (+)-bromosuccinic acid, L-lysine, L-histidine) have been determined by the powder method.