Rice University logo

Paul S. Engel

Professor of Chemistry

We are investigating the chemistry of free radical initiators and inhibitors of polymerization.  A related area of research is the free radical of single walled carbon nanotubes with organic free radicals.


B.M. Watson, T.N. Vo, P.S. Engel, and A.G. Mikos, “Biodegradable, In Situ-Forming Cell-Laden Hydrogel Composites of Hydroxyapatite Nanoparticles for Bone Regeneration,” Ind. Eng. Chem. Res., 54, 10206-10211 (2015).

Tatara, A.M.; Watson, E.; Satish, T; Scott, D. W.; Dimitrios, P. K.; Engel, P. S.; Mikos, A. G. Synthesis and Characterization of Diol-based Unsaturated Polyesters: Poly(Diol Fumarate) and Poly(Diol Fumarate-co-Succinate) .  Biomacromolecules, 2017 submitted 1/10/17

Watson, B.M.; Kasper, F.K.; Engel, P.S.; Mikos, A.G. “Synthesis and Characterization of Injectable, Biodegradable, Phosphate-Containing, Chemically Cross-Linkable, Thermoresponsive Macromers for Bone Tissue Engineering,” Biomacromolecules, 2014, 15, 1788-1796.

Engel, P. S.; Gudimetla, V. B.; Gancheff, J. S.; Denis, P. A. Solution Phase Photolysis of 1,2-Dithiane Alone and with Single-Walled Carbon Nanotubes.  J. Phys. Chem. A, 116 2012: 8345-8351

Mukerjee, A.; Combs, R.; Chattopadhyay, J.; Abmayr, D. W.; Engel, P. S.; Billups, W. E.; Attachment of Nitrogen and Oxygen Centered Radicals to Single-Walled Carbon Nanotube Salts.  Chem. Mater., 20 2008: 7339-7343

Alvarez, N. T.; Kittrell, C., Schmidt, H. K.; Hauge, R. H.; Engel, P. S.; Tour, J. M. Selective Photochemical Functionalization of Surfactant-Dispersed Single Wall Carbon Nanotubes in Water.  J. Am. Chem. Soc., 130 2008: 14227-14233

Engel, P. S.; Billups, W. E.; Abmayr, D. W.; Tsvaygboym, K.; Wang, R. The Reaction of Carbon Nanotubes with Organic Peroxides.  J. Phys. Chem. C, 112 2008: 695-700

Chattopadhyay, J.; Chakraborty, S.; Mukherjee, A.; Wang, R.; Engel, P. S.; Billups, W. E. SET Mechanism in the Functionalization of Single-Walled Carbon Nanotubes.  J. Phys. Chem. C, 111(48) 2007: 17928-17932

Wang, R.; Cherukuri, P.; Duque, J. G.; Leeuw, T. K.; Lackey, M. K.; Moran. C. H.; Moore, V. C.; Conyers J. L; Smalley, R. E.; Schmidt, H. K; Weisman, R. B.; Engel, P. S SWNCT PEG-eggs: Single-Walled Carbon Nanotubes in Biocompatible Shell-Crosslinked Micelles.  Carbon, 45 2007: 2388-2394

Engel, P. S.; Tsvaygboym, K.; Bachillo, S.; Smith W. B.; Jiang, J-J, Chignell, C. F.; Motten, A. G. Photorearrangement of alpha-Azoxy Ketones and Triplet Sensitizaion of Azoxy Compounds.  J. Org. Chem, 70 2005: 2598

Engel, P.S.; Ying, Y-M.; He, S-L. An Aliphatic Bifunctional Free Radical Initiator. Synthesis of a Block Copolymer from an Azoperester by Sequential Thermal and Photochemical Initiation.  Macromolecules, 36 2003: 3821-3825

Temenoff, J.S.; Shin,H.; Conway, D.E.; Engel, P.S.; Mikos, A. G. In Vitro Cytotoxicity of Redox Radical Initiators for Crosslinking of Oligo(Poly(Ethylene Glycol) Funarate) Macromers.  Biomacromolecules, 4 2003: 1605-1613

Engel, P.S.; Duan, S.; He, S.-L.; Tsvaygboym, K.: Wang, C.; Wu, A.; Ying, Y.-M.; Smith, W.B. The Free Radical Chemistry of the Azoxy Group.  Arkivoc 2003: 89-108

P.S. Engel, L. Pan, Y. Ying, and L.B. Alemany. Thermolysis of Free-Radical Initiators: tert-Butylazocumene and Its 1,3 and 1,4-Bisazo and 1,3,5-Trisazo Analogues.  JACS, 123 2001: 3706-3715

  • B.S. Chemistry (1964) University of California, Los Angeles
  • Ph.D. Chemistry (1968) Harvard University
  • Rice Quantum Institute
  • Physical-Organic Chemistry
Email: engel@rice.edu
Phone: (713) 348-4087
Office: George R. Brown Hall, E200K