H. W. Sun, F. X. Qiao and G. Y.Liu, “Characteristic of Theophylline Imprinted Monolithic Column and Its Application for Determination of Xanthine Derivatives Caffeine and Theophylline in Green Tea,” Journal of Chromatography A, Vol. 1134, No. 1-2, 2006, pp. 194-200.

has been cited by the following article:

• TITLE: Inorganic Molecularly Imprinted Polymer by Sol-Gel Process for Recognition of Caffeine

  AUTHORS: Min Jae Shin, Young Jae Shin, Jae Sup Shin

  KEYWORDS: Molecularly Imprinted Polymer; Sol-Gel Process; Caffeine; Theophylline

  JOURNAL NAME: Open Journal of Organic Polymer Materials, Vol.3 No.1, January 24, 2013

  ABSTRACT: A molecularly imprinted polymer (MIP) was formed using an inorganic polymer by a sol-gel process. The monomers which were used to synthesize the inorganic polymer were tetraethoxysilane (TEOS), triethoxymethylsilane (MTES), and triethoxyphenylsilane (PTES). Caffeine was chosen as a template for the molecular imprinting, and theophylline was chosen as the analogous counterpart compound. The discriminating ability of the synthesized MIP to these two-compounds was estimated in this study. The MIP showed the highest discriminating ability when the ratio of TEOS:MTES: PTES in the synthesis of the inorganic polymer was 1:1:3, the reaction temperature was 50?C, and the pH of the reaction system was ~6.5.