WELCOME TO HOME PAGE OF Dr. S. SURESH
   
PRESENT ADDRESS
 
Research Associate
Chemical Engineering Division
National Chemical Laboratory
Dr. Homi Bhabha Road
Pune-411008
INDIA
 
DOCTORAL RESEARCH
Polymers for potential applications in the field of telecommunications, optical signal processing etc. has triggered interest in optical materials with nonlinear optical properties. Organic NLO polymers have the added advantages of integrability with different materials, mechanical strength, chemical resistance, and good processability for safe optical devices.

The work done consisted of:
Synthesis of novel methacrylates attached through varying spacers to donor acceptor end functionalised substituted azobenzenes, the polymerization and their physico-chemical characterisations.
Synthesis of new acrylates attached through varying spacers to donor acceptor end functionalised substituted azobenzenes, the polymerisation and their physico-chemical characterisations.
Synthesis of styrenes attached at para position through varying spacers to donor acceptor end functionalised substituted azobenzenes, polymerisation and their physico-chemical characterisations.
Synthesis of epoxypropanes attached through varying spacers to donor acceptor end functionalised substituted azobenzenes, polymerisation and their physico-chemical characterisations.
Synthesis of poly maleimides attached through varying spacers to donor acceptor end functionalised substituted azobenzenes and their physico chemical characterisations.
Synthesis of polyacrylates and methacrylates attached through varying spacers to magnesons and their physico chemical characterisations.
Corona poling has been done on the spin-coated polymer films, were evaluated for their nonlinear optical properties and properties were related to structures.
Photoluminescence and electroluminescence studies on these side chain polymers.
Copolymerisation of the most efficient monomers.

The physico chemical characterisations include UV, IR, 1H NMR, MASS for the monomers and IR, UV, 1H NMR for polymers: The molecular weights of polymers were determined by GPC/ VPO. The thermal transitions were determined by DSC and the mesophases were identified by polarising microscopy.
 
PUBLICATIONS AND PATENTS
Synthesis and biological activity of aromatic terpenoid oxime ethers.
S. Suresh, S.N. Padalkar. U.M. Joshi, M. Joseph, P. Pawar, G.D. Hebbalkar, V.B. Tungikar, R.N. Sharma and S.A. Patwardhan.
Indian Journal of Chemistry, Vol 35.B 973-75 (1996).

Bio-activity of camphor oxime ethers against Mosquito, Aedes aegypti and Termite, Odentotermes brunneus
P.V. Pawar, V.B. Tungikar, R.N. Sharma, S. Suresh, S.N. Padalkar and S.A. Patwardhan.
Pesticide Research Journal, Vol.7 (2): 128-131, December, 1995.

Catalytic selective oxidation of amines with hydroperoxides over molecular sieves: Investigation into reaction of allyl amines, aryl amines and benzyl amines with H2O2 and t-BHP over TS1 and Cr S 2 as new catalyst.
S. Suresh R. Joseph, B. Jayachandran, A.V. Pol, M.P. Vinod, A. Sudalai, H.R. Sonawane and T. Ravindranathan
Tetrahedron, 51, 1305 (1995).

Selective oxidation of phenols to quoinones with hydroperoxides catalysed by chromium silicate 2.
A. Ramani, S. Suresh, M. Sasidharan and M. Bhanuchanda
Journal of Chemical Research, 474-75 (1996).

Catalytic oxdation of ethers with H2O2 over zeolites
M. Sasidaran, S. Suresh, A. Sudalai
Tetrahedron Letters, 36, 907 (1995).

Formation of silicon nanoclusters during the reaction of b-ionone with tetrachlorosilane.
S. Suresh, U.M. Joshi, M.P. Vinod, N.R. Pavaskar and K. Vijayamohanan
Chem. Materials, 9, 1186-90 (1997)

Polymer supported Vanadium salt as catalyst for oxidation of phenols
S. Suresh, S. Skaria and S. Ponrathnam
Synthetic Commun., 26 (11), 2113-17 (1996).

New Polymer supported Vanadium and Chromium as oxidation catalyst
S. Suresh S. Skaria and S. Ponrathnam
Studies on surface science , Accepted (1997).

Synthesis and studies on active azo dye polymers for Nonlinear optical applications I.(Methacrylates)
S. Suresh V. Vohra, C.R. Rajan, S. Ponrathnam, C. Noel and F. Kajzar, (Accepted, Nonlinear Optics), Presented, IUPAC Symposium Macro '98 on "Advances in Polymer Science and Technology" held in Chennai, India.

Synthesis and studies on active azo dye polymers for Nonlinear optical applications II.(styrene series) S. Suresh, V. Vohra, C.R. Rajan, S. Ponrathnam, M. Large and F. Kajzar. (Accepted, Nonlinear Optics)

Synthesis and studies on active azo dye polymers for Nonlinear optical applications III.(Acrylate series) S. Suresh, V. Vohra, C.R. Rajan, S. Ponrathnam, M. Large and F. Kajzar. (Communicated).
Synthesis and studies on active azo dye polymers for Nonlinear optical applications IV.(epoxy series) S. Suresh, V. Vohra, C.R. Rajan, S. Ponrathnam, C. Noel and F. Kajzar. (Communicated).

Synthesis and studies on active azo dye polymers for Nonlinear optical applications IV. (maleimide) S. Suresh, V. Vohra, C.R. Rajan, S. Ponrathnam, C. Noel and F. Kajzar. (Communicated)
Synthesis and studies on active azo dye polymers for their Photoluminescence
S. Suresh, A. Ghokarna, V. Vohra, C.R. Rajan and S. Ponrathnam. (Communicated).

(i) A process for the preparation of un symmetrically disubstituted benzylidene cycloalkanones, N.S.V. Raju, S. Suresh, K.V. Srinivasan, C.R. Rajan, S. Ponrathnam, C. Noel, Indian Patent (filed).

(ii) A process for the preparation of alkoxy/hydroxyalkoxy derivatives of unsymmetrically disubstituted benzylidene cycloalkanones, N.S.V. Raju, S. Suresh, K.V. Srinivasan, C.R. Rajan, S. Ponrathnam, C. Noel, Indian Patent (filed).

(iii) A process for the preparation of novel monomers based on unsymmetrically disubstituted benzylidene cycloalkanones, N.S.V. Raju, S. Suresh, K.V. Srinivasan, C.R. Rajan, S. Ponrathnam, C. Noel, Indian Patent (filed).

(iv) A process for the preparation of mesogen, N.S.V. Raju, S. Suresh, K.V. Srinivasan, C.R. Rajan, S. Ponrathnam, C. Noel, Indian Patent (3350/DEL/97).

(v) A process for the preparation of 2-(4-disubstituted) aminobenzyledine cycloalkanones, N.S.V. Raju, S. Suresh, K.V. Srinivasan, C.R. Rajan, S. Ponrathnam, C. Noel, Indian Patent (3345/DEL/97).

(vi) A process for the preparation of monosubstituted cycloalkanones, N.S.V. Raju, S. Suresh, K.V. Srinivasan, C.R. Rajan, S. Ponrathnam, C. Noel, Indian Patent (3348/DEL/97).
 
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