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All Journal VALENSI Indonesian Journal of Pure and Applied Chemistry
Paulina Taba
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Hasanuddin University
Biochemistry, Genetics & Molecular Biology Chemistry

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SINTESIS DAN KARAKTERISASI MOLECULARLY IMPRINTED POLYMERS MENGGUNAKAN METIL METAKRILAT DAN ETILEN GLIKOL DIMETAKRILAT SEBAGAI ADSORBEN DI-(2-ETILHEKSIL) FTALAT (SYNTHESIS AND CHARACTERIZATION OF MOLECULARLY IMPRINTED POLYMERS USING METHYL METHACRYLATE AND ETHYLENE GLYCOL DIMETACRILATE AS ADSORBENT DI-(2-ETILHEKSIL) PHTHALATE) Risna Jupri; St Fauziah; Paulina Taba
Indonesian Journal of Pure and Applied Chemistry Vol 5, No 3 (2022)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (371.088 KB) | DOI: 10.26418/indonesian.v5i3.59132

Abstract

Molecularly Imprinted Polymer (MIP) is an intelligent synthetic material because it has the ability to selectively recognize target molecules. This study aims to synthesize, characterize and analyze the performance of MIP. MIP material was synthesized using di-(2-Ethylhexyl) phthalate (DEHP) as a template molecule, methyl methacrylate (MMA) monomer combined with ethylene glycol dimethacrylate (EGDMA) as a crosslinker by precipitation polymerization method. MIP materials were characterized by SEM-EDS instrument, FTIR spectrometer, SAA instrument, and UV-Vis spectrophotometer. The test variables for the adsorption ability of MIP material on DEHP compounds were time and concentration. The results showed that the synthesized MIP was in the form of a coarse white solid with a stiff texture. Characterization with the EDS instrument showed a decrease in the mass percent of C and percent of C atoms which indicated the formation of MIP_DEHP_MMA-co-EGDMA(TE) and the surface morphology characterized by the SEM instrument was composed of small grains that tend to be uniform and have pores. The bonds that affect the formation of polymers characterized by FTIR were –C=C, –C=O, and –CO. Characterization with the SAA instrument was 142,2770 m2/g, the total pore volume was 0,2616 cm3/g and the average pore radius was 7.3562 nm, indicating mesoporous material. The optimum time for adsorption of MIP_DEHP_MMA-co-EGDMA(TE) to DEHP was 120 minutes. MIP_DEHP_MMA-co-EGDMA(TE) followed the pseudo-second-order kinetics model and the adsorption obeyed the Freundlich adsorption isotherm
Synthesis of 3-(4-Hydroxy-3-Methoxyphenyl)-1-(2-Hydroxyphenyl)-Propenone as a Colorimetric Chemosensor for Hydrogen Phosphate Anions Arfiani Nur; Bambang Purwono; Herlina Rasyid; Ummi Zahra; Aisyah Aisyah; Artati Artati; Andi N. Fitriani; Fadliah Fadliah; M. Yasser; Muharram Muharram; Paulina Taba; Indah Raya; Abdul W. Wahab; Nunuk H. Soekamto
Jurnal Kimia Valensi Jurnal Kimia VALENSI, Volume 12, No. 1, May 2026
Publisher : Department of Chemistry, Faculty of Science and Technology Syarif Hidayatullah Jakarta State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jkv.v12i1.46467

Abstract

Hydrogen phosphate is an important anion in environmental and biological systems; however, its excessive presence in water can contribute to eutrophication and water quality degradation. The synthesis and application of 3-(4-hydroxy-3-methoxyphenyl)-1-(2-hydroxyphenyl)-propenone (HMPP) as a colorimetric chemosensor for hydrogen phosphate (HPO₄²⁻) anions have been investigated. HMPP was synthesized via Claisen–Schmidt condensation of vanillin and 2-hydroxyacetophenone, obtained in 34% yield of the target compound. The colorimetric response of HMPP was evaluated toward various anions, including F⁻, Cl⁻, Br⁻, CN⁻, HPO₄²⁻, and CO₃²⁻. The results showed that HMPP exhibited a distinct response toward HPO₄²⁻; however, the presence of other anions caused varying degrees of interference, with CO₃²⁻ showing minimal effect, while Cl⁻, CN⁻, and Br⁻ reduced the response to a greater extent. This behavior is attributed to hydrogen-bonding interactions between HMPP and HPO₄²⁻, which enhance intramolecular charge transfer (ICT). The applicability of HMPP was further evaluated in spiked tap water samples, demonstrating satisfactory recovery in the range of 105.47–107.50%, indicating acceptable accuracy and reliability. Therefore, HMPP demonstrates potential as a colorimetric chemosensor for hydrogen phosphate anions in water samples.
Co-Authors Abdul W. Wahab Aisyah Aisyah Andi N. Fitriani Arfiani Nur Artati Artati Bambang Purwono Fadliah Fadliah Herlina Rasyid Indah Raya M. Yasser Muharram Muharram Nunuk H. Soekamto Risna Jupri St Fauziah Ummi Zahra