Sass unicode interpolation

sass-interpolation.scss

$termsIcons: (
  1 : ('e91c','e91d'),
  2 : ('e919','e918'),
  3 : ('e91e','e91f'),
  4 : ('e91a','e91b'),  
);

.page-taxonomy-term {
  
  .title-container {
    
    &:before, &:after {    
      @include iconFont;
      position: absolute;
      bottom: 0;
      right: 0;
      font-size: 200px;
      color: $white;  
    }
    
    &:after {
      color: $secondaryColor;         
    }
    
  }
  
}

@each $termId, $contents in $termsIcons {
    $before: nth($contents, 1);
    $after: nth($contents, 2);
    
    .page-taxonomy-term-#{$termId} .title-container {
          &:before {
            content: unquote("\"")+unquote(str-insert($before, "\\", 1))+unquote("\"");
          }
          &:after {
            content: unquote("\"")+unquote(str-insert($after, "\\", 1))+unquote("\"");
          }
      }
}