Ashok Maliakal's Website

Ashok J. Maliakal, Ph. D.

Dept: Materials Research

Position: Member of Technical Staff

Location: Bell Laboratories, Lucent Technologies
Room 1D-246
Murray Hill, NJ 07974

Phone: 908-582-4604

Email: maliakal@lucent.com

Education:
Ph.D. in Chemistry from Columbia University, NY, NY in 2003.
B.A. in Chemistry from Cornell University, Ithaca, NY.

Background: My current research projects are all related to the general area of organic electronics. My specific projects involve synthesis of novel organic semiconductor materials, design and synthesis of novel printable gate dielectrics, and fabrication of organic semiconductor FETs on flexible substrates.
My doctoral research was performed under the guidance of Dr. Nicholas Turro at Columbia University and consisted of 2 major projects. In the first project, I developed a new method of measuring polymer chain end-end reaction rates as a function chain length using fluorescence labels and gel permeation chromatography. In my second project, I investigated the effect of electronic exchange interactions in dendritic polyradicals on their ability to relax nuclear polarization. During my doctorate, I also worked in collaboration with CIBA Specialty Chemicals to identify a new fluorescence deactivation mechanism involving TICT states in the 2-arylbenzotriazole family of ultraviolet absorbers. Prior to graduate school, I spent 3 years as a synthetic organic chemist in the Process Research Department at Merck Research Labs.

PUBLICATIONS

1) A. Maliakal, H. Katz, and P. Cotts, “Inorganic Oxide Core, Polymer Shell Nanocomposite as a High K Gate Dielectric for Flexible Electronics Applications.”, submitted (2005)

2) M. Ofuji, A. J. Lovinger, C. Kloc, T. Siegrist, A. Maliakal, and H. KATZ, “Organic field-effect transistors made with semiconductor layers dry-transferred onto polymer dielectrics”, submitted (2005).

3) A. Maliakal, K. Raghavachari, H. Katz, E Chandross, and T. Siegrist, “Photochemical Stability of Pentacene and a Substituted Pentacene in Solution and in Thin Films.”, Chemistry of Materials, 16 (24), 4980 -4986 (2004).

4) A. Maliakal, N. J. Turro, B. O’Shaughnessy, "Multiple Detection Size-Exclusion Chromatography -ACS Symposium Series 893," A. M. Striegel, editor; American Chemical Society: Washington, DC; in press (2004).

5) A. Maliakal, H. Greenaway, B. O’Shaughnessy, and N. J. Turro, “ Chain Length Dependent Polymer End-End Reaction Rate Constants in the Reaction of Polystyryllithium with a Styrene Terminated Fluorescent Labeled Polystyrene,” Macromolecules 36(16), 6075-6080 (2003).

6) A. Maliakal, N. J. Turro, A. W. Bosman, J. Cornel, and E. W. Meijer, “Relaxivity Studies on Dinitroxide and Polynitroxyl Functionalized Dendrimers: Effect of Electron Exchange and Structure on Paramagnetic Relaxation Enhancement.” J. Phys. Chem. A., 107 (41): 8467-8475 (2003).

7) A. Maliakal, G. Lem, N. J. Turro, R. Ravichandran, J. C. Suhadolnik, A. D. DeBellis, M. G. Wood, and J. Lau “ Twisted Intramolecular Charge Transfer States in 2-Aryl-Benzotriazoles: Fluorescence Deactivation via Intramolecular Electron Transfer Rather than Proton Transfer,” J. Phys. Chem. A., 106(34), 7680-7689 (2002).

8) A. Maliakal, M. Weber, N. J. Turro, M. M. Green, S. Y. Yang, S Pearshall, and M. Lee “Chemically Induced Dynamic Electron Polarization Studies of a pH Dependent Free Radical Cage formed in a Photoinitiator Labeled Poly(methacrylic acid),” Macromolecules 35(24), 9151-9155 (2002).

9) A. Maliakal, S. Y. Yang, M. J. Lee, S. K. Pearsall, N. J. Turro, and M. M. Green, “Free radical cage formation in photoinitiator labeled poly(methacrylic acid): ESR and grafting.” Polymer Preprints (American Chemical Society, Division of Polymer Chemistry) 43(2), 1370-1371 (2002).

10) A. Maliakal, N. J.Turro “Synthesis and Photo-Chemically Induced Dynamic Nuclear Polarization (photo-CIDNP) Study of Monodisperse Photoinitiator Endlabeled Polystyrene.” Polymeric Materials Science and Engineering 87, 166-167. (2002).

11) P. J. Pye, K. Rossen, S. Weissman, A. Maliakal, R. A. Reamer, R. Ball, N. N. Tsou, R. P. Volante, P. J. Reider, “Crystallization-induced diastereoselection: asymmetric synthesis of substance P inhibitors,” Chemistry--A European Journal 8, 1372-1376 (2002).

12) G. R. Humphrey, R. A. Miller, P. J. Pye, K. Rossen, R. A. Reamer, A. Maliakal, S. S. Ceglia, E. J. J. Grabowski, R. P., P. J. Reider, “Efficient and Practical Synthesis of a Potent Anti-MRSA .beta.-Methylcarbapenem Containing a Releasable Side Chain,” J. Am. Chem. Soc. 121, 11261-11266 (1999).

13) Y. J. Shi, K. M. Wells, P. J. Pye, W. B. Choi, H. R. O. Churchill, J. E. Lynch, A. Maliakal, J. W. Sager, K. Rossen, R. P. Volante, P. J. Reider, “Crystallization-induced asymmetric transformation: stereospecific synthesis of L-768,673.” Tetrahedron 55, 909-918 (1999).

14) R. A. Rennels, A. Maliakal, D. B. Collum, “Ortholithiation of Anisole by BuLi-TMEDA: Reaction via Disolvated Dimers.” J. Am. Chem. Soc. 120, 421-422 (1998).

15) K. Rossen, P. J. Pye, A. Maliakal, R. P. Volante, “Kinetic Resolution of rac-4,12-Dibromo[2.2]paracyclophane in a Palladium [2.2]PHANEPHOS Catalyzed Amination.” J. Org. Chem. 62, 6462-6463 (1997).