The Role of Ion Pairs in the Second-Order NLO Response of 4-X-1-Methylpiridinium Salts
作者:Francesca Tessore、Elena Cariati、Franco Cariati、Dominique Roberto、Renato Ugo、Patrizia Mussini、Cristiano Zuccaccia、Alceo Macchioni
DOI:10.1002/cphc.200900696
日期:2010.2.1
or aggregation of ion pairs in controlling their second‐order NLO response in anhydrous chloroform solution. The combined use of electronic absorption spectra, conductimetric measurements and pulsed field gradient spin echo (PGSE) NMR experiments show that the second‐order NLO response, investigated by the electric‐field‐induced second harmonic generation (EFISH) technique, of the salts of the cationic
一系列的4-X -1-甲基吡啶鎓阳离子的非线性光学(NLO)的发色团(X =( ë )-CHCHC 6 ħ 5 ;( ê )-CHCHC 6 ħ 4 -4'--C(CH 3)3 ;( ê )-CHCHC 6 ħ 4 -4'--N(CH 3)2 ;( ê )-CHCHC 6 ħ 4 -4'--N(C 4 H ^ 9)2 ;( E,E ) - (CHCH)2 C ^ 6 ħ 4 -4'--N(CH 3)2)与各种有机的(CF 3 SO 3 - , p -CH 3 Ç 6 ħ 4 SO 3 - ),无机(I -,CLO 4 -,SCN -,[氢化2我6 ] 2-)和有机金属(顺式- [Ir(CO)2 I 2 ] -)对阴离子进行了研究,目的是研究离子对以及离子对的离解或聚集在控制无水氯仿溶液中二阶NLO反应中的作用。结合使用电子吸收光谱,电导率测量和脉冲场梯度自旋回波(PGSE)NMR