Third-order nonlinear optical properties of copoly(2,3,5,6-tetrafluoro-1,4-phenylenevinylene-2,5-dialkoxy-1,4-phenylenevinylene)s, a novel class of push-pull substituted PPVs

被引:8
作者
Farinola, GM [1 ]
Cassano, T [1 ]
Tommasi, R [1 ]
Babudri, F [1 ]
Cardone, A [1 ]
Naso, F [1 ]
机构
[1] Univ Bari, Dipartmento Chim, Ctr CNR, Studio Metodol Innovat Sintesi Organ, I-70126 Bari, Italy
来源
LINEAR AND NONLINEAR OPTICS OF ORGANIC MATERIALS | 2001年 / 4461卷
关键词
PPV; third-order susceptibility; nonlinear optics; Z-scan;
D O I
10.1117/12.449829
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
A series of copoly(2,3,5,6-tetrafluoro-1,4-phenylenevinylene-2,5-dioctyloxy-1,4-phenylenevinylene)s containing variable ratios of tetrafluorophenylenevinylene and dialkoxyphenylenevinylene repeating units has been synthesized via the Stille cross-coupling reaction in order to investigate the influence on the chi((3)) of the simultaneous presence of electron-deficient and electron-rich aromatic monomers in the PPV backbone. Third-order nonlinear optical properties of the resulting materials have been studied in chloroform solutions at lambda=1064 nm using the picosecond Z-scan technique. The nonlinear refractive index has been found to be negative, strongly dependent on the copolymer composition, and as high as (-10+/-2)x10(-12) cm(2)/W.
引用
收藏
页码:296 / 303
页数:8
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