申请人:Imperial Chemical Industries PLC
公开号:US04804747A1
公开(公告)日:1989-02-14
(i) A compound of the formula: ##STR1## wherein R is H, a metal or a group containing a tetravalent N atom; X is S, O, ##STR2## R.sup.1 is NO.sub.2, CN or COOY; Y is H, C.sub.1-4 -alkyl, a metal or a group containing a tetravalent N atom; R.sup.2 and R.sup.3 are each independently H or a non-hydrophilic aliphatic or cycloaliphatic group containing up to 30 carbon atoms; R.sup.4 and R.sup.5 are each independently H or a non-hydrophilic aliphatic or cycloaliphatic group containing up to 30 carbon atoms; and R.sup.6 and R.sup.7 are each independently H or a non-hydrophilic group containing up to 4 carbon atoms; or R.sup.4 and R.sup.6 together comprise ring fused to Ring A and R.sup.5 and R.sup.7 are as hereinbefore defined; or R.sup.5 and R.sup.7 together comprise ring fused to Ring A and R.sup.4 and R.sup.6 are as hereinbefore defined; or R.sup.2 and R.sup.4 together with the N atom to which R.sup.2 is attached form a ring fused to Ring A and R.sup.3 and R.sup.5 are as hereinbefore defined; or R.sup.3 and R.sup.5 together with the N atom to which R.sup.3 is attached form a ring fused to Ring A and R.sup.2 and R.sup.4 are as hereinbefore defined; provided there are, in total, from 8 to 40 carbon atoms in one or two of the groups independently represented by R.sup.2, R.sup.3, R.sup.4 and R.sup.5 ; (ii) an optical element comprising a compound of Formula I having non-linear optical (NLO) properties for use in the generation of NLO signals, (iii) a method of preparation of such an optical element comprising a plurality of monomolecular layers of the compound of Formula I on the surface of a transparent or reflecting substrate by a Langmuir-Blodgett technique; and (iv) an optical device incorporating such an optical element.
(i)一种化合物的结构式为:##STR1## 其中R是H,金属或含有四价N原子的基团;X是S,O,##STR2## R1是NO2,CN或COOY; Y是H,C1-4-烷基,金属或含有四价N原子的基团;R2和R3各自独立地是H或含有多达30个碳原子的非亲水性脂肪族或环烷基基团;R4和R5各自独立地是H或含有多达30个碳原子的非亲水性脂肪族或环烷基基团;R6和R7各自独立地是H或含有多达4个碳原子的非亲水性基团;或R4和R6共同构成与环A融合的环,而R5和R7如上定义;或R5和R7共同构成与环A融合的环,而R4和R6如上定义;或R2和R4与R2连接的N原子共同形成与环A融合的环,而R3和R5如上定义;或R3和R5与R3连接的N原子共同形成与环A融合的环,而R2和R4如上定义;在由R2,R3,R4和R5独立表示的一组中,总共有8至40个碳原子;(ii)一种光学元件,包括一种具有非线性光学(NLO)性质的化合物,用于产生NLO信号,(iii)一种制备这种光学元件的方法,通过Langmuir-Blodgett技术在透明或反射基底表面上形成化合物的多个单分子层;以及(iv)包括这种光学元件的光学设备。