摘要
Abstract
Inclusion behaviors of 4 -sulfonatocalix[4]arene (C[4]A -SO3 Na)to basic fuchsin (BF)and rhodamine B(RhB)were studied by using of UV -Vis spectrum.Results showed that both inclu-sion ratios of C[4]A -SO3 Na to BF and RhB were 1:1,and inclusion constants at 25 ℃ were 1.42 ×103 L ·moL -1 and 3.0 ×103 L·moL -1 ,respectively.Adsorption strengths at maximum absorption wavelength (λmax )increased slightly when Zn2 +,Cu2 +,Mn2 +,Cd2 + or Ag +,respectively,has been added into C[4]A -SO3 Na -BF system,and the most obvious increase of adsorption strength among them sourced from adding Cu2 +.Hence,Cu2 + possessed a capability to hinder the inclusion of C[4]A -SO3 Na to BF.There were no influences of adding above metal ions on inclusion of C[4]A -SO3 Na to RhB.Almost no effects of adding anions of HPO4 2 - or Cl - on inclusion of C [4]A -SO3 Na to BF were observed.However,adsorption strength at λmax declined when adding SO4 2 -,hereby,SO4 2 - possessed a capability to promote the inclusion of C[4]A -SO3 Na to BF.Almost no effects of adding Cl - or SO4 2 - on inclusion of C[4]A -SO3 Na to RhB were observed,and adsorption strength at λmax increased when adding HPO4 2 -,therefore,HPO4 2 - possessed a capability to hinder the inclusion of C[4]A -SO3 Na to RhB.The influences of pH on adsorption strengths of C[4]A -SO3 Na -BF were studied also.Results showed that C[4]A -SO3 Na possessed a capability to sta-bilize BF in range of pH 5 -8.关键词
四磺酸钠杯4芳烃/包合/碱性品红/罗丹明 BKey words
4 -sulfonatocalix[4]arene/inclusion/basic fuchsin/rhodamine B/metal ion/anion分类
化学化工
