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Guest Lecture: The Role Of Spectroscopy In Determining Molecular Structure

Chemistry, Improving Science for a Better Future!

To increase the body of knowledge about chemistry, the Chemistry Department, FMIPA, Tanjungpura University again held a guest lecture on Thursday, 18 May 2017 at 8.00 WIB - finished in the senate meeting room, Lt. III, Untan Rectorate Building. The theme raised in this guest lecture was "The Role of Spectroscopy in Determining Molecular Structure" with the resource person, namely Prof. Yana Maolana Syah, Ph.D from the Bandung Institute of Technology. He is a Professor in the field of Organic Chemistry of Natural Products. He obtained the title Drs. from the Chemistry Department of UNPAD, a Master's degree in Organic Chemistry from the Chemistry Department of ITB, and a Ph.D degree from the Department of Chemistry, University of Western Australia.

Since the beginning of the guest lecture, Prof. Yana Maolana Syah, Ph.D emphasized that the isolation and structure determination of natural compounds is very important for chemists to study because it is the basis for the development of natural resources. He also admitted that Kalimantan is a storehouse of biodiversity that contains unlimited natural compounds. Prof. Yana Maolana Syah, Ph.D has conducted research on Macaranga which is a pioneer plant that is often found in forests. Various species of Macaranga that have been studied him include Macaranga gigantea, Macaranga lowii, Macaranga pruinosa, Macaranga recurvata, Macaranga rhizinoides, and Macaranga trichocarpa. Apart from that, he said that Kalimantan also has knowledge and traditions of using plants for health. Efforts to explore this wealth can go through the stages of isolation, structure determination, and bioactivity testing.

Prof. Yana Maolana Syah, Ph.D has experience in analyzing NMR spectroscopy data for more than 30 years. He also has experience operating Bruker, Varian (Agilent), and JEOL NMR equipment. In this guest lecture, he explained the advantages of sample analysis using NMR (Nuclear Magnetic Resonance) spectroscopy which can reveal the structure of both small and large molecules through the resulting spectrum. Apart from that, many experiments can be carried out using NMR spectroscopy, including HNMR, CNMR, APT, DEPT, COSY, HMQC, HMBC, and NOESY. The sample required for analysis using NMR spectroscopy is at least 5 mg.

The participants who attended looked very enthusiastic about taking part in this guest lecture. Not only from students and lecturers from the Chemistry Department, FMIPA Untan, this guest lecture was also attended by students and lecturers from Chemistry Education FKIP Untan, Faculty of Pharmacy Untan, and Chemistry Education Muhammadiyah University Pontianak. Various questions were asked by the participants to Prof. Yana Maolana Syah, Ph.D. Before ending the guest lecture, he said that Tanjungpura University as a large university in West Kalimantan must be at the forefront of preserving and balancing Kalimantan's natural resources.

A more detailed explanation of NMR spectroscopy can be seen in his book. One of his works is a book entitled Basics of Molecular Structure Determination Based on 1H and 13C NMR Spectrum Data.

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