IJSRST1841211 | Received : 25 Jan 2018 | Accepted : 08 Feb 2018 | January-February-2018 [ (4) 2: 869-876] © 2018 IJSRST | Volume 4 | Issue 2 | Print ISSN: 2395-6011 | Online ISSN: 2395-602X Themed Section: Science and Technology 869 Preparation, Photoluminescent Behaviour, Antimicrobial and Antioxidant Properties of New Orange Light Emitting Sm(III) Complex, Sm(CHME) 3 .Dmphen P. Nandal 1 , R. Kumar 2 , Sheetal 1 , S. P. Khatkar 1 , V. B. Taxak 1 * 1 Department of Chemistry, Maharshi Dayanand University, Rohtak, Haryana, India 2 Department of Chemistry, UIET, Maharshi Dayanand University, Rohtak, Haryana , India * Corresponding Author: E-mail address: v_taxak@yahoomail.com ABSTRACT The photoluminescent properties of lanthanide complexes with organic ligand have been the subject of great interest as these functional complexes have potential applications in various fields from quantum cutting materials to photonic devices [1-13]. Most of these applications are based on the efficient emission of lanthanide complexes in the UV region to IR regions. However, the lanthanide ions have very low absorption coefficient which prevents direct excitation due to Laporte-forbidden 4f-4f transitions. To overcome this disadvantage and obtain intense lanthanide luminescence, there are two specific ways to sensitize lanthanide emission. Firstly, the use of metal ion in the heteromettalic system where energy can be transferred from the metal ion to lanthanide ion which results in enhanced luminescence of lanthanide ion. Secondly, to choose a suitable organic chromophore moiety which excite and transfers the energy to the lanthanide ion through antenna affects. For the second option numerous organic ligands such β-hydroxyketone, β-diketone, carboxylic acids and various heterocyclic derivatives have been introduced to develop and designed new luminescent lanthanide-based materials [14-20]. Keywords : Laporte-Forbidden, Photoluminescent, Antimicrobial, Antioxidant, Sm(CHME)3.Dmphen, UV Region, IR Regions, Organic Chromophore Moiety, Β-Hydroxyketone, Β-Diketone, Carboxylic Acids, CHME, OLEDs I. INTRODUCTION The β-hydroxyketones and its derivatives serve as excellent antennas or sensitizers, absorbing the excitation light and transferring the energy to the trivalent lanthanide ions [21-24]. The choice of β- hydroxyketone ligand is based on its strong ability to coordinate lanthanide ion which can have many practical usage. To the best of the author knowledge, Eu 3+ and Tb 3+ ions are of particular interest but investigations on Sm 3+ complexes containing β- hydroxyketone ligand are still rare. This present work deals with the synthesis of a new Sm(III) complex employing β-hydroxyketone ligand 2-(4- chlorophenyl)-1-(2-hydroxy-4- ethoxyphenyl)ethan- 1-one (CHME) as main ligand and 5,6-dimethyl-1,10- phenanthroline as ancillary ligands. The investigation of photoluminescent properties has also done for possible use in OLEDs as emitting materials. The author also explicated in vitro antimicrobial activities and antioxidant activities of ligand and its corresponding Sm(III) complex employing tube dilution method and DPPH method respectively in detail.