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All Journal IPTEK Journal of Proceedings Series Jurnal Pendidikan IPA Indonesia Alchemy Jurnal Penelitian Kimia Indonesian Journal of Chemistry Jurnal Saintek Lahan Kering Molekul: Jurnal Ilmiah Kimia
Reinner Ishaq Lerrick
Department of Chemistry, Faculty of Science and Engineering, University of Nusa Cendana, Jl. Adi Sucipto, Penfui-Kupang 85118, NTT, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Energy Environmental Science Materials Science & Nanotechnology Public Health

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GREEN REDUKSI P- ANISALDEHIDA DAN VANILIN Firdaus, Maulidan; Jumina, Jumina; Anwar, Chairil; Lerrick, Reinner I
Alchemy Jurnal Penelitian Kimia Vol 7, No 1 (2008)
Publisher : Alchemy Jurnal Penelitian Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Sintesis menggunakan prosedur sederhana, efisien energi, dan relatif cepat untuk mereduksi p-anisaldehida dan vanilin berdasarkan prinsip - prinsip green chemistry telah dilakukan. reduksi p-anisaldehida dilakukan dengan cara penggerusan p-anisaldehida dan NaBH4 dengan jumlah mol yang sama pada pemperatur kamar tanpa pelarut. reduksi vanilin dilakukan dengan NaBH4 pada temperatur kamar dengan sejumlah kecil pelarut metanol menggunakan mortar dan pestel. penentuan struktur produk reaksi dilakukan dengan metode spektroskopi (IR, 1H-NMR, dan GC-MS). pada penelitian ini, reduksi p-anisaldehida dan vanilin menghasilkan 4-metoksibenzil alkohol dan 4-hidroksi-3-metoksibenzil alkohol dngan rendemen berturut-turut sebesar 98% dan 89%.
Chemistry Teachers’ Awareness, Understanding, and Confidence toward Computational Tools for Molecular Visualization Saudale, F. Z.; Lerrick, R. I.; Parikesit, A. A.; Mariti, F.
Jurnal Pendidikan IPA Indonesia Vol 8, No 4 (2019): December 2019
Publisher : Program Studi Pendidikan IPA Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpii.v8i4.21437

Abstract

Recent advances in cheminformatics and bioinformatics research have generated software and computational tools for molecular modeling and visualization that can be incorporated to improve chemistry teaching and learning in high school. Nevertheless, there have never been any study simultaneously reporting chemistry teachers’ awareness, understanding, and confidence toward contemporary computer-aided molecular modeling and visualization tools. This study examined 32 high school chemistry teachers’ knowledge, understanding and confidence toward nine new computational programs on molecular modeling and visualization namely ChemDraw, HyperChem, UCSF Chimera, Marvin Sketch, PsiPred, MBC (PS2), Rampage, Vienna RNA Package and Mode RNA following two days of professional workshop-based training.  After completing the training and assessments, the teachers showed an enhancement in awareness, understanding, and confidence toward those nine computational programs. Intensive activities consisting of theoretical lectures, hands-on practices, assignments, and case study presentations seem to provide valuable resources to the increase in teachers’ knowledge, understanding, and skill that incorporates computational technology. Hence, the impact of this research pointed toward the value of teachers’ professional development that creates a platform to reduce the barriers of access, resources, knowledge, and skills. This study is expected to help improving teachers’ awareness, understanding, and confidence necessarily required for further implementation of available technology for instructional purposes. 
Sonication-Assisted Mitsunobu Etherification of Sterically Encumbered and Intramolecular Hydrogen Demanding Compounds: A Model towards Intramolecular MPV Reduction Reinner I Lerrick
IPTEK Journal of Proceedings Series No 4 (2017): 2nd International Seminar on Chemistry 2016
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2017i4.3065

Abstract

A steric and intramolecular hydrogen bonding controlled substrates has been successfully etherified towards sonication assisted Mitsunobu reaction. This modified alcohol-alcohol coupling reaction of 2-hydroxyacetophenone, substituted 2-hydroxyecetophenone, benzophenone and substituted benzophenones with (2R,4R)-pentanediol was found to be substrate electronic restraint
Sintesis Senyawa C-2,8,14,20-TETRA-(2,4,5-Trimetoksi)Fenil Kaliks[4] Resorsinarena dari Senyawa 2,4,5-Trimetoksi Benzaldehida Yoktan E Buraen; Pius D Ola; Reinner I Lerrick
Saintek Lahan Kering Vol 2 No 2 (2019): JSLK Desember 2019
Publisher : Fakultas Pertanian, Universitas Timor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (728.552 KB) | DOI: 10.32938/slk.v2i2.867

Abstract

The synthesis of C-2,8,14,20-tetra-(2,4,5-trimethoxy)phenyl calix[4] resorcinarene from 2,4,5-trimethoxy benzaldehyde has been done. Through isolation of asaron from Timor Genoak (Acorus calamus) followed by its oxidation with K2Cr2O7, the C-2,8,14,20-tetra-(2,4,5-trimethoxy)phenyl calix[4] resorcinarene has, therefore, been accessed over reflux. The asaron has been isolated as 3.05% of yellow oil whilst, the oxidation produced 2,4,5-trimethoxy benzaldehyde with the yield of 49.49%. The C-2,8,14,20-tetra-(2,4,5-trimethoxy) phenyl calix[4]resorcinarene has been yielded as 89.29% of a brown solid.
PEMURNIAN MINYAK GENOAK ( Acorus calamus ) ASAL PULAU TIMOR MENGGUNAKAN DISTILASI PENGURANGAN TEKANAN Rensy A. Henci; Reinner I Lerrick; Theo Da Cunha
Saintek Lahan Kering Vol 3 No 1 (2020): JSLK JUNI 2020
Publisher : Fakultas Pertanian, Universitas Timor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (408.352 KB) | DOI: 10.32938/slk.v3i1.1039

Abstract

A research about Asaron oil purification produced over Stahl distillation has been done. This research was conducted by distillation of genoak’s roots, rhizomes and laeves whilist the purification was carried out through reduced pressure distillation. A yellowish oil was yield respectively 1,83 gram from the roots and rhizomes and 1,26 gram from laeves which the was revealed as 90,49% pure of asaron confirmed by GC-MS, 1H-NMR and FT-IR analysis.
DIRECT OXIDATION OF EUGENOL USING A PERMANGANATE Reinner Ishaq Lerrick
Molekul Vol 4, No 1 (2009)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (440.106 KB) | DOI: 10.20884/1.jm.2009.4.1.62

Abstract

Direct oxidation of eugenol has been done using potassium permanganate. This research attempts to produce benzyl carboxylic acid, an important intermediate reactant for isoflavone synthesis, directly by breaking the p bond of allillic group attached to eugenol. The oxidation procedures were adopted from Wahyuningsih and Kusumaningsih anetol oxidation reactions. There were three modifications done i.e. one polar system of the oxidation environment, variation of time of reflux and temperature. Eugenol was firstly diluted in water by converting to its salt type and then oxidized using KMnO4 at 75 oC for 4 hours. The expected acid was separated by acidifying using sulfuric acid.The result showed that direct oxidation of eugenol using modified method of Wahyuningsih gave only a vicinal diol which undergoes polymerization into product in 80% yield with 83% purity. However, variation of time of reflux of Wahyuningsih method showed the same result with Kusumaningsih method as brown oily viscous liquid. The product was only 38% purity.
AKTIVITAS ANTIBAKTERI Eschericia coli PADA MINYAK ATSIRI BATANG GENOAK (Acorus calamus) ASAL PULAU TIMOR Sherlly M. F. Ledoh; Reiner I. Lerrick; Debora Ratu
Molekul Vol 8, No 1 (2013)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (389.563 KB) | DOI: 10.20884/1.jm.2013.8.1.120

Abstract

Telah dilakukan uji aktivitas antibakteri Eschericia coli (E. coli) minyak batang genoak (Acorus calamus). Penelitian ini dilakukan melalui destilasi uap batang genoak yang diikuti analisis komposisi kimianya menggunakan GC-MS, dan uji antibakteri terhadap bakteri E. coli menggunakan metode hitung cawan. Hasil penelitian diperoleh minyak genoak dengan rendemen 0,17% dan asaron sebagai komponen utama minyak genoak sebesar 89,81%. Minyak genoak dapat menghambat pertumbuhan bakteri E. coli sebesar 95,76% pada kosentrasi 10% (v/v).
T-grafting BODIPY-Based Photosensitizers: The Synthesis of 2,6-Diethylacrylic-8-(o-methoxyphenyl)BODIPY and Its DSSC Performance Reinner Ishaq Lerrick; Wastiana Bere; Meliana Da Silva Braga; Agus Supriyanto; Ali Hashem Essa
Indonesian Journal of Chemistry Vol 23, No 1 (2023)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.76919

Abstract

A new T-grafting photosensitizer of Dye-Sensitized Solar Cell (DSSC) has been developed by aligning Donor-Acceptor (D-A) group in an axially chiral BODIPY. Synthesis of the dye was conducted over a linear approach involving one-pot, non-oxidative synthesis of 1,3,5,7-tetramethyl-8-(o-methoxyphenyl)BODIPY, bromination, and finally C2/C6 ethyl acrylate Pd-Heck coupling to produce 65% of 2-ethylacrylic-1,3,5,7-tetramethyl-8-(o-methoxyphenyl)BODIPY (BOD-8) and 35% of 2,6-diethylacrylic-1,3,5,7-tetramethyl-8-(o-methoxyphenyl)BODIPY (BOD-9), both characterized by the appearance of acrylic alkenes at 6.05, and 7.63 ppm for BOD-8, and the additional 5.43, 7.80 ppm doublet peaks for BOD-9. The resulting dye showed excellent photon harvesting-related photovoltaic properties and electronic injection and regeneration processes where the acrylic esters were found to be the Donor and the aryl was the Acceptor. Eventually, the dye produced a current at 0.5% efficiency, similar to the horizontal D-A DSSC photosensitizer design.
Co-Authors Agus Supriyanto Ali Hashem Essa Chairil Anwar Debora Ratu Jumina Jumina Mariti, F. Maulidan Firdaus Meliana Da Silva Braga Parikesit, A. A. Pius Dore Ola Rensy A. Henci Saudale, F. Z. Sherlly Ledoh Theo Da Cunha Wastiana Bere Yoktan E Buraen