摘要
本文制备了四新戊氧基酞菁锌(Tetra-neopentoxy phthalocyanine zine)(TNPPeZn)和四壬基酞菁铜(Tetra-nonyl phthalocyanine copper)(TNPeCu)两种酞菁衍生物的Langmuir-Blodgett(LB)薄膜.通过测量10～473K温度下的吸收光谱,研究了两种薄膜的分子聚集状态.TNPPeZn的LB薄膜中,存在着分子单体和分子二聚体,在吸收光谱中分别表现为680nm和620nm的吸收峰.随着温度的升高,分子单体逐渐转变为分子二聚体,这个过程是不可逆的.TNPeCu的LB薄膜中,除了分子单体和分子二聚体以外,还有吸收为740nm的分子J聚集体存在.随着温度的变化,J聚集体发生可逆变化.
Langmuir-Blodgett (LB) films of tetra-neopentoxy phthaloeyanine zine and tetra-nonyl phthalocyanine copper are prepared, Absorption spectra at different temperature are measured and aggregates of the films are studied. There are a strong peak at 680 nm and a sideband at 620 nm which are corresponding to monomer and dimer respectively in absorption spectra of tetra-neopentoxy phthalocyanine zine films in room temperature. The monomer is transformed irreversibly into the dimer gradually with temperature increasing. The absorption spectra of tetra-nonyl phthalocyanine copper LB films in room temperature show that there are monomer, dimer and J-aggregates which causes a strong peak at 740 nm, in the LB films. The J-aggregates is destroyed at high temperature and restored again when the temperature decreased.
出处
《光学学报》
EI
CAS
CSCD
北大核心
1992年第8期723-728,共6页
Acta Optica Sinica
