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Browsing by Author "Perera, K. Sarath. D."

Browsing by Author "Perera, K. Sarath. D."

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  • Aflatoxins 
    Perera, K. Sarath. D.; Theeshya Dulmini, A. D. (Institute of Chemistry Ceylon, 2021-04)
    Nowadays, “Aflatoxin and Coconut oil” has become a provocative topic in Sri Lanka. However, aflatoxins (AFs) were first discovered in England, around 1960s, after the outbreak of turkey X disease. In 2012, the International ...
  • Agostic interaction and metallacycles 
    Perera, K. Sarath. D. (Institue of Chemistry Ceylon, 2023-06)
    Coordinatively unsaturated metal centers may interact with a C-H bond of a coordinated ligand and then undergo C-H bond activation or fission to form metallacycles
  • Alkyl Metal Complexes 
    Perera, K. Sarath. D. (Institute of Chemistry Ceylon, 2023-01)
    An alkyl-metal complex has at least one Metal Carbon (M-C) σ- or π-bond. Grignard reagent (RMgX) and LiR are the most common alkyl-metal reagents used in organic synthesis.
  • Arene Metal Complexes 
    Perera, K. Sarath. D. (Institute of Chemistry Ceylon, 2021-09)
    Arenes are aromatic compounds which can act These complexes with three simple ligands are called as π-electron donors. Organometallic complexes with such ligands are commonly known as arene complexes, arene metal complexes ...
  • Aromaticity and Reactions of Aromatic Molecules/Ions 
    Perera, K. Sarath. D. (Institute of Chemistry, 2021-06)
  • Biotoxins: Invisible threat to mankind 
    Perera, K. Sarath. D.; Malawalaarachchi, Ovini .N (Institute of Chemistry Ceylon, 2020-09)
    Biotoxins or germ weapons are infectious (disease- producing) agents such as bacteria, viruses, rickettsiae, fungi, or other biological agents – that may be utilized as weapons against humans, animals, or plants. ...
  • Chemical Aspects of Ginger (Zingiber officinale) 
    Perera, K. Sarath. D.; Theeshya, Dulmin.A.D (Institute of Chemistry Ceylon, 2024-01)
    Ginger (Zingiber officinale) has emerged as one of the 20 top selling herbal supplements in USA over the last two decades
  • Chemical Constituents of Murunga Tree 
    Perera, K. Sarath. D.; Theeshya Dulmini, A. D. (Institute of Chemistry Ceylon, 2021-04)
    It is obvious to introduce Moringa oleifera (MO) or “Murunga” as the “miracle tree”, since every part of it has a prodigious medicinal value. Moringa is a genus of medicinal plants that consists of 13 species. ...
  • Chemical Constituents of the Golden Spice – Turmeric 
    Perera, K. Sarath. D.; Theeshya Dulmini, A. D (Institue of Chemistry Ceylon, 2023-01)
    Recently, “Turmeric” has become one of the most popular topics in Sri Lanka. The high price of turmeric made it popular among spice farmers in Sri Lanka
  • Chemical Nature of Pesticides 
    Perera, K. Sarath. D.; Theeshya Dulmini, A. D. (Institute of Chemistry Ceylon, 2020-05)
    The phrase, “The Granary of the East” was used to describe the success of agriculture-based economy of our ancient nation.
  • Chemistry of Radicals 
    Perera, K. Sarath. D. (Institute of Chemistry Ceylon, 2023-01)
    Free radicals can be defined as chemical species (atom, molecule or ion) which have a single unpaired valence electron.
  • Crystal Field Theory 
    Perera, K. Sarath. D. (Institute of Chemistry Ceylon, 2020-05)
    Crystal Field Theory (CFT) supersedes valence bond theory as it provides a simple method to explain the electronic spectra and magnetism of transition metal complexes.
  • Defense and Destruction: Insight of Chemical-based Weapons 
    Perera, K. Sarath. D.; Malawalaarachchi, Ovini N. (Institute of chemistry Ceylon, 2022-06)
    Millions of deaths and the end of civilizations can be inflicted by knife, machete, fire, or even by the pen or the spoken word; but a Weapon of Mass Destruction (WMD) implies such a result more centrally imposed
  • Diels-Alder Reaction 
    Perera, K. Sarath. D. (Institute of chemistry Ceylon, 2023-06)
    Diels-Alder (D-A) reaction is a (4π+2π) cycloaddition reaction. It is used to generate six-membered rings by combining two π-systems. The key components of this reaction are a conjugated diene (an alkene with two π-bonds) ...
  • Hydrogenation of olefins 
    Perera, K. Sarath. D. (Institute of Chemistry Ceylon, 2021-04)
    Hydrogenation of olefins is one of the simplest reactions, where two hydrogen atoms add across a carbon-carbon double bond to give an alkane.
  • Insertion and deinsertion reactions 
    Perera, K. Sarath. D. (Institute of Chemistry Ceylon, 2020-09)
    n an insertion reaction, Y gets transferred on to a ligand (AB).
  • Introduction to Coordination Chemistry 
    Perera, K. Sarath. D. (Institute of chemistry Ceylon, 2022-10)
    Coordination chemistry of transition metals is very important as it helps students to understand various industrial, chemical and biological processes. Hemoglobin and chlorophyll are the two most important compounds ...
  • Introduction to Polymer Chemistry 
    Perera, K. Sarath. D. (Institute of chemistry Ceylon, 2022-10)
    Polymers play an important role in our day-to-day life. In Greek, poly means “many” and mer means “parts”. Polysaccharides, proteins and nucleic acids are the main bio-polymers/macromolecules. A large number of industries ...
  • Introduction to Radiochemistry 
    Perera, K. Sarath. D. (Institute of Chemistry Ceylon, 2021-04)
    An atom consists of a very small (about 10–10 m in radius), dense and positively charged nucleus and negatively charged electrons. The nucleus consists of protons (p) and neutrons (n); ...
  • Ionic Liquids 
    Perera, K. Sarath. D.; De Silva, Shanali (Institute of Chemistry Ceylon, 2024-01)
    Ionic liquids (ILs) are salts that exist in the liquid state below 100 o C or at room temperature. They are also referred to as molten salts, ionic fluids, liquid organic salts, neoteric solvents, and designer solvents