Dr. S. Sankararaman

Professor

Email : sanka@iitm.ac.in
Phone: 2257 4210

Academic profile

  • Ph.D, Uni. Victoria, Canada
  • M.Sc,  IIT Madras
  • Areas of expertise:

    Synthetic and mechanistic organic chemistry, organic photochemistry and time resolved spectroscopy

    Professional experience:

    1985-1990 Postdoctoral Fellow, University of Houston, TX, USA
    1991-1996 Assistant Professor at IIT Madras
    1996-2000 Associate Professor
    2000-present Professor
    2001-2004 – Head, RSIC/SAIF, IIT Madras

    Honour and Awards

    INSA-DFG exchange fellow (Summer 1996)
    DAAD fellow (Summer 1997)
    Alexander Von Humboldt fellow (May 1998 - April 1999)
    All the above fellowships were used to establish collaborative research programme with Prof. Dr. Henning Hopf, Institute of Organic Chemistry, University of Brawnschweig, Germany. There is an on-going collaborative project fundes by the Volkswagen-Stiftung, Germany

    Research Interest:

    (1) Modern Acetylene Chemistry: Synthesis of acetylenic macrocycles, cyclophanes and dendrimers. Synthesis of pyrene based novel       fluorophores. Acetylene and arene based molecules for molecular electonics and photonics.

    (2)Organo Asymmetric Catalysis: Development of new organo catalysts and their applications in organic synthesis.

    Selected publications/patents:

    Syntheses and Structures of Isomeric {6.6]- and [8.8]Cyclophanes with 1,4-Dioxabut-2-yne and 1,6-Dioxahexa-2,4-diyne Bridges.
    M. Srinivasan, S. Sankararaman, H. Hopf, I. Dix, P. G. Jones
    J. Org. Chem., 66, 4299-4303, (2001).

    Synthesis and Structure of a New [6.6]Metacyclophane with Enediyne Bridges.
    M. Srinivasan, S. Sankararaman, I. Dix and P. G. Jones,
    Org. Lett., 2, 3849-3852 (2000).

    Highly Selective Synthetic Transformations Catalyzed by Lithium Perchlorate in Organic Media.
    S. Sankararaman and J. E. Nesakumar,
    Eur. J. Org. Chem., 2003-2011, (2000). (Invited, peer reviewed REVIEW).

    Patents Filed: (Both are Indian Patents filed on 20th Feb 2006)

    1. An improved single-stage procedure for the synthesis of cross-linked polyallylamine hydrochloride

    2. Synthesis of various salts of cross-linked polyallylamine polymer by ion-exchange metathesis.

    Recent publications :

    1. Conformational isomers from rotation of diacetylenic bond in an ethynylpyrene substituted molecular hinge. S. Sankararaman, G. Venkataramana, B. Varghese, J. Org. Chem. 2008, 73, 2405-2407.


    2. Intramolecular p-stacking interaction in a rigid molecular hinge substituted with 1-(pyrenylethynyl) units. R. Nandy, M. Subramoni, B. Varghese, S. Sankararaman, J. Org. Chem. 2007, 72, 938-944.


    3. Synthesis and structure of cross-conjugated bis-dehydroannulenes with a Y-enediyne motif and different p-topologies. A. Bandyopadhyay, B. Varghese, H. Hopf, S. Sankararaman, Chem. Eur. J. 2007, 13, 3813-3821.


    4. Synthesis of 1,4-cyclohexadiene based acetylenic macrocycles using Cadiot-Chodkiewicz oupling. Structure of a tub-shaped tetrameric container. A. Bandyopadhyay, B. Varghese, S. Sankararaman, J. Org. Chem. 2006, 71, 4544-4548.


    5. Photophysical behaviour of 1-(4-N,N-dimethylaminophenylethynyl)pyrene (DMAPEPy) in homogeneous media. U. Subuddhi, S. Haldar, S. Sankararaman, A. K. Mishra, Photochem. Photobiol. Sci. 2006, 5, 459-466.


    6. Synthesis and spectroscopic investigation of aggregation through cooperative p-p and CH…O interactions in a novel pyrene octaaldehyde derivative. G. Venkataramana, S. Sankararaman, Org. Lett. 2006, 8, 2739-2742.


    7. Synthesis, absorption and fluorescence emission properties of 1,3,6,8-tetraethynylpyrene and its derivatives. G. Venkataraman, S. Sankararaman, Eur. J. Org. Chem. 2005, 4162-4166.


    8. Synthesis of 2,5-Diethynyl Substituted Oxepins from trans-1,4-Diethynylcyclohexa-2,5-diene-1,4-diols. Bandyopadhyay, S. Sankararaman, Tetrahedron Lett. 2005, 46, 3221-3224.


    9. Synthesis of Shape Persistent Polyal Dendrimers. Facile Entry Into Polyene and Polyyne Dendrimers. V. Narayanan, S. Sankararaman, H. Hopf, Eur. J. Org. Chem. 2005, 2740-2746.

    Current Ph.D Students

    1. Ritesh Nandy
    2. Daniel Raj
    3. Antony Joseph
    4. R. Saravanakumar
    5. A. Srinivasan
    6. A. Mohan
    7. E. Ramachandran

    Courses taught recently:

    B.Tech: CY 102 – Chemistry II
    M.Sc: CY 505, CY 511, CY 551, CY562, CY 604, CY 605, CY 674, CY 675

    Projects:

    Title: Synthesis, structure and reactivity studies on shape persistent macrocyclic silacyclynes.

    Funding Agency: Defense Research and Development Organization (DRDO), New Delhi, INDIA

    Duration: 3 years (2003 – 2006)                           Status: on-going

    Title: Synthesis of Acetylenic Macrocycles: Model Systems for Graphyne Substructures.

    Funding Agency: Council of Scientific and Industrial Research (CSIR), New Delhi, INDIA

    Duration: 3 Years (2005-2008)                                       Status: on-going

    Title: Synthesis of Functionalized Polyethynyl Pyrene and Perylene Derivatives for Applications in Molecular Electronics and Photonics

    Funding Agency: DST, New Delhi.

    Duration: 3 years, (2007-2010)