Torsten Hegmann

Torsten Hegmann

Chemical Physics
Professor and Ohio Research Scholar
Campus:
Kent
Contact Information
Phone:
330-672-7770
Fax:
330-672-2796
Personal Website:
Biography

CAREER

  • Director, Advanced Matrials and Liquid Crystal Institute, since 07/2019
  • Associate Director, Advanced Materials & Liquid Crystal Institute, 09/2018 - 06/2019
  • Interim Associate Director, LCI, 12/2017 - 08/2018
  • Full Professor, Kent State University, since 2015
  • Fellow, Royal Society of Chemistry (FRSC), since 2016
  • CSO - Torel LLC
  • Associate Professor & Ohio Research Scholar in Science and Technology of Advanced Nanomaterials, Liquid Crystal Institute, Kent State, 2011-2015
  • Interim Director Regenerative Medicine Initiative at KSU, ReMedIKS, Kent State, since 2012
  • Adjunct Associate Professor, University of Manitoba, Department of Chemistry & Department of Pharmacology and Therapeutic, since 2011
  • Associate Professor, University of Manitoba (Canada), Chemistry, 2008-2011
  • Assistant Professor, University of Manitoba (Canada), Chemistry, 2003-2008

 

Select Opportunities

 

PUBLICATIONS

  • M. T. Murachver, A. Nemati, M. Salamończyk, C. Bullock, Z. Sabata, H. Rahmani, T. Vorobiova, A. Izadnegahdar, S. M. Salili, V. Norman, C. Zhu, T. Hegmann, S. N. Sprunt, J. T. Gleeson, A. I. Jákli, Soft Matter 2019, 15, 3283-8290. “Indication of a Twist-Grain-Boundary-Twist-Bend Phase of flexible core bent-shape chiral dimers”
  • M. E. Prévôt, J. P. Vanegas, J. Pérez-Prieto, Y. Molard, E. Hegmann, T. Hegmann, “Emissive Nanomaterials and liquid crystals”, in 21. Century Nanoscience - A Handbook, Ed. K. D. Sattler, Taylor & Francis, 2019, in press.
  • S. Shadpour, A. Nemati, N. J. Boyd, L. Li, M. E. Prévôt, S. L. Wakerlin, J. P. Vanegas, M. Salamończyk, E. Hegmann, C. Zhu, M. R. Wilson, A. I. Jákli, T. Hegmann, Mater. Horizons 20196, 959-968. “Heliconical-layered nanocylinders (HLNCs) – hierarchical self-assembly in a unique B4 phase liquid crystal morphology” Featured on the Journal Cover
  • S. Shadpour, J. P. Vanegas, A. Nemati, T. Hegmann, ACS Omega 20194, 1662-1668. “Amplification of chirality by adenosine monophosphate-capped luminescent gold nanoclusters in nematic lyotropic chromonic liquid crystal tactoids”
  • A. Nemati, S. Shadpour, L. Querciagrossa, L. Li, T. Mori, M. Gao, C. Zannoni, T. Hegmann, Nat. Commun. 20189, 3908. “Chirality amplification by desymmetrization of chiral ligand-capped nanoparticles to nanorods quantified in soft condensed matter”
  • N. Beals, M. Model, M. Worden, T. Hegmann, S. Basu, ACS Appl. Mater. Interfaces 2018, 10, 6869-6878. “Intermolecular G-quadruplex induces hyaluronic acid-DNA superpolymers causing cancer cell swelling, blebbing and death”
  • M. Reznikov, D. Andrienko, V.N. Boychuk, A. Bubnov, L. Dolgov, I. Dozov, P. Davidson, A. Gabovich, T. Hegmann, I. Ilchishin, R. Karapinar, P. Korniychuk, D. Stepanchikov, O. Tkachenko, Y. Kurioz, M. Manevich, A.M. Negriyko, J. Parka, V. Pergamenshchik, C. Rosenblatt, K. Singer, I. Terenetskaya, V. Vashchenko, M. Vasnetsov, M. Soskin, T. Wolinski, O.V. Yaroshchuk, J. Mol. Liq. 2018267, 11-28. “Recollections of Professor Yuriy Reznikov” - “Personal views and the beginnings of nanoparticle dispersions in liquid crystals”
  • J. Wang, L. Bergquist, J.-I. Hwang, K.-J. Kim, J.-H. Lee, T. Hegmann, A. Jákli, Liq. Cryst. 2018, 45, 333-340. “Wide temperature-range, multi-component, optically isotropic antiferroelectric bent-core liquid crystal mixtures for display applications”
  • L. Li, M. Salamonczyk, S. Shadpour, C. Zhu, A. Jákli, T. Hegmann, Nat. Commun. 2018, 9, 714. “An unusual type of polymorphism in a liquid crystal”
  • L. Bergquist, T. Hegmann, ChemNanoMat 20173, 863-868. “Chiral amplification by L-cysteine-capped gold nanoparticles in lyotropic chromonic liquid crystals” Highlighted in Chemistry Views and Featured on the Journal Cover
  • T. Mori, A. Sharma, A. Nemati, L. Bergquist, T. Hegmann, Proc. SPIE 201710361, 103610M. “Effects of size and ligand density on the chirality transfer from chiral ligand-capped nanoparticles to nematic liquid crystals”
  • B. Atorf, T. Funck, T. Hegmann, S. Kempter, T. Liedl, K. Martens, H. Mühlenbernd, T. Zentgraf, B. Zhang, H. Kitzerow, M. Urbanski, Liq. Cryst. 2017, 44, 1929-1947. “Liquid crystals and precious metal: From nanoparticle dispersions to functional plasmonic nanostructures”
  • S. M. Salili, M. Worden, A. Nemati, D. W. Miller, T. Hegmann, Nanomaterials 20177, 211. “Synthesis of distinct iron oxide nanomaterial shapes using lyotropic liquid crystal solvents”
  • B. Rožič, J. Fresnais, C. Molinaro, J. Calixte, S. Umadevi, S. Lau-Truong, N. Félidj, T. Kraus, F. Charra, V. Dupuis, T. Hegmann, C. Fiorini-Debuisschert, B. Gallas, E. Lacaze, ACS Nano 201711, 6728-6738. “Oriented gold nanorods and gold nanorod chains within smectic liquid crystal topological defects”
  • L. Bergquist, C. Zhang, R.R. Ribeiro de Almeida, B. Pellegrene, M. Salamonczyk, M. Kim, J.-I. Hwang, K.-J. Kim, J.-H. Lee, A. Jákli, T. Hegmann, ChemOpen 2017, 6, 196-200. “An optically isotropic antiferroelectric liquid crystal (OI-AFLC) display mode operating over a wide temperature range using ternary bent-core liquid crystal mixtures” Featured on the Journal Cover
  • A. Sharma, T. Mori,  C. J. Mahnen, H. R. Everson, M. T. Leslie, A. d. Nielsen, L. Lussier, C. Zhu, C. Malcuit, T. Hegmann, J. A. McDonough, E. J. Freeman, L. T. J. Korley, R. J. Clements, E. Hegmann, Macromol. Biosci. 2017, 17, 1600278. “Effects of structural variations on the cellular response and mechanical properties in biocompatible, biodegradable, and porous smectic liquid crystal elastomers” Most accessed in 11/2016
  • T. Mori, T. Hegmann, J. Nanopart. Res. 2016, 18, 295. “A Practical Guide to Calculate the Number of Atoms and Overall Composition of Metal Nanoparticles using Geometric Considerations”
  • Z. Sun, M. Worden, Y. Wroczynskyj, J. A. Thliveris, J. van Lierop, T. Hegmann, D. W. Miller, J. Mater. Chem. B 2016, 4, 5913-5920. “Differential internalization of brick shaped iron oxide nanoparticles by endothelial cells”
  • A. Sharma, M. Urbanski, T. Mori, H.-S. Kitzerow, T. Hegmann, Metallic and semiconducting nanoparticles in liquid crystals, In Particles in Liquid Crystals, Eds. J. Lagerwall, G. Scalia, World Scientific Publ., Ch. 14, 497-535 (2016)
  • L. Li, M. Salamonczyk, A. Jákli, T. Hegmann, Small 2016, 12, 3944-3955. “A dual modulated homochiral helical nanofilament phase with local columnar ordering formed by bent core liquid crystals: Effects of molecular chirality” - Selected as VIP Paper, Highlighted in Advanced Science News
  • Z. Sun, M. Worden, J. A. Thliveris, S. Hombach-Klonisch, T. Klonisch, J. van Lierop, T. Hegmann, D. W. Miller, Nanomed. Nanotech. Biol. Med. 2016, 12, 1775-1784. “Biodistribution of negatively charged iron oxide nanoparticles (IONPs) in mice and enhanced brain delivery using lysophosphatidic acid (LPA)”
  • A. Sharma, D. Hofmann, T. Hegmann, Liq. Cryst. 2016, 43, 828-838. “Patterned alignment of nematic liquid crystals generated by ink-jet printing of gold nanoparticles and emissive carbon dots on both flexible polymer and rigid glass substrates”
  • R. K. Shukla, A. Sharma, T. Mori, T. Hegmann, W. Haase, Liq. Cryst. 2016, 43, 861. Addendum to: “Effect of two different size chiral ligand-capped gold nanoparticle dopants on the electrooptic and dielectric dynamics of a ferroelectric liquid crystal mixture” 
  • R. K. Shukla, A. Sharma, T. Mori, T. Hegmann, W. Haase, Liq. Cryst. 2016, 43, 695-703. “Effect of two different size chiral ligand-capped gold nanoparticle dopants on the electrooptic and dielectric dynamics of a ferroelectric liquid crystal mixture”
  • T. Mori, A. Sharma, T. Hegmann, ACS Nano 2016, 10, 1552-1564. “Significant enhancement of the chiral correlation lengths in nematic liquid crystals by gold nanoparticle surfaces featuring axially chiral binaphthyl ligands” 
  • M. Urbanski, J. Mirzaei, A. Sharma, D. Hofmann, H.-S. Kitzerow, T. Hegmann, Liq. Cryst. 2016, 43, 183-194. “Chemically and thermally stable, emissive carbon dots as viable alternatives to semiconductor quantum dots for emissive nematic liquid crystal–nanoparticle mixtures with lower threshold voltage”
  • A. Labeeb, H. F. Gleeson, T. Hegmann, Appl. Phys. Lett. 2015, 107, 232903. “Polymer stabilization of the smectic C-alpha* liquid crystal phase – over tenfold thermal stabilization by confining networks of photo-polymerized reactive mesogens” 
  • M. Worden, L. Bergquist, T. Hegmann, RSC Advances 2015, 5, 100384-100389. “A quick and easy synthesis of fluorescent iron oxide nanoparticles featuring a luminescent carbonaceous coating via in situ pyrolysis of organosilane ligands”
  • M. Worden, M. A. Bruckman, M.-H. Kim, N. F. Steinmetz, J. M. Kikkawa, C. LaSpina, T. Hegmann, J. Mater. Chem. B 2015, 3, 6877-6884. “Aqueous synthesis of polyhedral “brick-like” iron oxide nanoparticles for hyperthermia and T2 MRI contrast enhancement” - Selected as 2015 Hot Paper
  • B. M. Yao, Y. S. Gui, M. Worden, T. Hegmann, M. Xing, X. S. Chen, W. Lu, Y. Wroczynskyj, J. van Lierop, C.-M. Hu, Appl. Phys. Lett. 2015, 106, 142406. “Quantifying complex permittivity and permeability of magnetic nanoparticles” 
  • R. K. Shukla, J. Mirzaei, A. Sharma, D. Hofmann, T. Hegmann, W. Haase, RSC Advances 2015, 5, 34491-34496. “Electro-optic and dielectric properties of a ferroelectric liquid crystal doped with chemically and thermally stable, emissive carbon dots”
  • T. Bera, E. J. Freeman, J. A. McDonough, R. J. Clements, C. Malcuit, T. Hegmann, E. Hegmann, ACS Appl. Mater. Interfaces 2015, 7, 14528-14535. “Liquid crystal elastomer microspheres as 3D cell scaffolds supporting the attachment and proliferation of myoblasts”
  • A. Sharma, A. Neshat, C. J. Mahnen, A. d. Nielsen, J. Snyder, T. L. Stankovich, B. G. Daum, E. M. LaSpina, G. Beltrano, S. Li, B.-W. Park, R. J. Clements, E. J. Freeman, C. Malcuit, J. A. McDonough, L. T. J. Korley, T. Hegmann, E. Hegmann, Macromol. Biosci. 2015, 15, 200-214. “Biocompatible, biodegradable and porous liquid crystal elastomer scaffolds for spatial cell cultures”, Most accessed in 10/2014, Highlighted in Advanced Science News
  • X. Feng, L. Sosa-Vargas, S. Umadevi, T. Mori, Y. Shimizu, T. Hegmann, Adv. Funct. Mater. 2015, 25, 1180-1192. “Discotic liquid crystal functionalized gold nanorods: 2- and 3D self-assembly plus macroscopic alignment and increased charge carrier mobility in hexagonal columnar liquid crystal hosts affected by molecular packing and π-π interactions”
  • S. Umadevi, G. Venkatchalam, T. Hegmann, “Nanoparticles: Additives and building blocks for liquid crystal phases”, in Handbook of Liquid Crystals - 2nd Edition, Eds. J. W. Goodby et al., Wiley-VCH, Vol. 6, Ch. 2, 27-76 (2014)
  • A. Sharma, T. Mori, H.-C. Lee, M. Worden, E. Bidwell, T. Hegmann, ACS Nano 2014, 8, 11966-11976. “Detecting, visualizing, and measuring gold nanoparticle chirality using helical pitch measurements in nematic liquid crystal phases”
  • K.-S. Jang, J. C. Johnson, E. Hegmann, T. Hegmann, L. T. J. Korley, Liq. Cryst. 2014, 41, 1473-1482. “Biphenyl-based liquid crystals for elevated temperature processing of polymers”
  • Z. Sun,  M. Worden, Y. Wroczynskyj, V. Yathindranath, J. van Lierop, T. Hegmann, D. W. Miller, Int. J. Nanomed. 2014, 9, 3013-3026. “Magnetic field enhanced convective diffusion of iron oxide nanoparticles in an osmotically disrupted cell culture model of the blood-brain barrier”
  • R. K. Shukla, X. Feng, S. Umadevi, T. Hegmann, W. Haase, Chem. Phys. Lett. 2014, 599, 80-85. “Influence of different amount of functionalized bulky gold nanorods dopant on the electrooptical, dielectric and optical properties of the FLC host”
  • M. Urbanski, J. Mirzaei, T. Hegmann, H.-S. Kitzerow, Proceedings 41. German Conference on Liquid Crystals 2014, P9, 105-109. “Dispersions of functionalized gold nanoparticles in nematic liquid crystals”
  • J. Mirzaei, M. Urbanski, H.-S. Kitzerow, T. Hegmann, ChemPhysChem 2014, 15, 1381-1394. “Synthesis of liquid crystal silane functionalized gold nanoparticles and their effects on optical and electro-optic properties of a structurally related nematic liquid crystal”
  • M. Urbanski, J. Mirzaei, T. Hegmann, H.-S. Kitzerow, ChemPhysChem 2014, 15, 1395-1404. “Nanoparticle doping in nematic liquid crystals: Distinction between surface and bulk effects by numerical simulations”
  • S. Umadevi, H.-C. Lee, V. Ganesh, X. Feng, T. Hegmann, Liq. Cryst. 2014, 41, 265-276. "A versatile, one-pot synthesis of gold nanostars with long, well-defined thorns using a lyotropic liquid crystal template"
  • M. Reznikov, A. Sharma, T. Hegmann, Part. Part. Syst. Charact. 2014, 31, 257-265. "Ink-jet printed nanoparticle alignment layers: Easy design and fabrication of patterned alignment layers for nematic liquid crystals" – Inside Cover Article
  • V. Yathindranath, M. Worden, Z. Sun, D. W. Miller, T. Hegmann, RSC Advances 2013, 3, 23722-23729. "A general synthesis of metal (Mn, Fe, Co, Ni, Cu, Zn) oxide and silica nanoparticles based on a low temperature reduction/hydrolysis pathway"
  • V. Yathindranath, Z. Sun, M. Worden, L. J. Donald, J. A. Thliveris, D. W. Miller, T. Hegmann, Langmuir 2013, 29, 10850-10858. "One-pot synthesis of iron oxide nanoparticles with functional silane shell: A versatile general precursor for conjugations and biomedical applications"
  • T. Hegmann, International Innovation Report 2013, 9, 53-55. "Modulating the properties of liquid crystals using nanoparticles as dopants" - Feature Article/Interview
  • V. Yathindranath, M. Worden, V. Ganesh, M. Inokuchi, T. Hegmann, RSC Adv. 2013, 3, 9210-9213. "Highly crystalline iron/iron oxide nanosheets via liquid crystal templating"
  • S. Umadevi, X. Feng, T. Hegmann, Adv. Funct. Mater. 2013, 23, 1393-1403. "Large area self-assembly of nematic liquid crystal-functionalized gold nanorods" – Frontispiece Article
  • Z. Sun, V. Yathindranath, M. Worden, J. A. Thliveris, S. Chu, F. E. Parkinson, T. Hegmann, D. W. Miller, Int. J. Nanomed. 2013, 8, 961-970. "Characterization of cellular uptake and toxicity of aminosilane-coated iron oxide nanoparticles with different charge in CNS relevant cell culture models"
  • D. F. Moore, V. Yathindranath, T. Hegmann, M. Pelletier, D. W. Miller, R. Schiffmann, “Directed drug convection using magnetic nanoparticles as therapeutic carriers - Meeting the challenge of specific brain pharmaco-therapeutics”, in Nanoneurosurgery and Nanoneuroscience (Taylor & Francis), 2013, Ch. 11, 147-155.
  • J. Mirzaei, M. Urbanski, H.-S. Kitzerow, T. Hegmann, Phil. Trans. R. Soc. A 2013, 371, 20120256. "Hydrophobic gold nanoparticles via silane conjugation - chemically and thermally robust nanoparticles as dopants for nematic liquid crystals"
  • S. Umadevi, G. Venkatchalam, T. Hegmann, “Nanoparticles as additives and building blocks for liquid crystal phases”, in Handbook of Liquid Crystals - 2nd Ed. (Wiley-VCH), 2013, Vol. 5, Ch. 16.
  • J. Mirzaei, M. Reznikov, T. Hegmann, J. Mater. Chem. 2012, 22, 22350-22365. "Quantum dots as liquid crystal dopants" – Feature Article + Cover
  • A. Rudzki, A. Lapanik, B. Kinkead, H. Qi, T. Hegmann, W. Haase, Soft Matter 2012, 8, 8722-8728. "Electrooptical and dielectric properties of alkylthiol-capped gold nanoparticle-ferroelectric liquid crystal nanocomposites: Influence of chain length and tethered liquid crystal functional groups"
  • J. Mirzaei, R. Sawatzky, A. Sharma, M. Urbanski, K. Yu, H.-S. Kitzerow, T. Hegmann, Proc. SPIE 2012, 8279, 827983 (9 pages). "New developments in nanoparticle-liquid crystal composites: from magic-sized semiconductor nanoclusters to alignment pattern formation via nanoparticle stenciling
  • O. Stamatoiu, J. Mirzaei, X. Feng, T. Hegmann, Top. Curr. Chem. 2012, 318, 331-393. “Nanoparticles in liquid crystals and liquid crystalline nanoparticles”
  • A. Sharma, M. Worden, T. Hegmann, Ferroelectrics 2012, 431, 154-163. “Nanoparticle-promoted thermal stabilization of room temperature cholesteric blue phase mixtures”
  • S. Umadevi, X. Feng, T. Hegmann, Ferroelectrics 2012, 431, 164-175. “Bent-core and nematic liquid crystal functionalized gold nanorods”
  • U. Shivakumar, J. Mirzaei, X. Feng, A. Sharma, P. Moreira, T. Hegmann, Liq. Cryst. 2011, 38, 1495-1514. “Nanoparticles – versatile, promising yet challenging dopants for liquid crystals”
  • J. Mirzaei, M. Urbanski, Kui Yu, H.-S. Kitzerow, T. Hegmann, J. Mater. Chem. 2011, 21, 12710-12716. “Nanocomposites of a nematic liquid crystal doped with magic-sized CdSe nanocrystals as nanoscale additives”
  • H. Qi, T. Hegmann, Liq. Cryst. Today 2011, 20, 102-114. “Liquid crystal-gold nanoparticle composites”
  • V. Yathindranath, L. Rebbough, D. F. Moore, D. W. Miller, J. van Lierop, T. Hegmann, Adv. Funct. Mater. 2011, 21, 1457-1464. “A versatile, one-step, low-temperature, reductive synthesis to bare, hydrophilic or hydrophobic magnetite nanoparticles” – Frontispiece Article
  • B. Kinkead, M. Urbanski, H. Qi, H.-S. Kitzerow, T. Hegmann, Proc. SPIE 2010, 7775, 777511. “Alignment and electro-optic effects in nanoparticle-doped nematic liquid crystals”
  • M. Urbanski, B. Kinkead, T. Hegmann, H.-S. Kitzerow, Liq. Cryst. 2010, 37, 1151-1156. “Director field of birefringent stripes in liquid crystal/nanoparticle dispersions” – Front Cover Article
  • M. Urbanski, B. Kinkead, H. Qi, T. Hegmann, H.-S. Kitzerow, Nanoscale 2010, 2, 1118- 1121. “Electroconvection in nematic liquid crystals via nanoparticle doping” – Inside Front Cover Article
  • B. Kinkead, T. Hegmann, J. Mater. Chem. 2010, 20, 448-458. “Effects of size, capping agent, and concentration of CdSe and CdTe quantum dots doped into a nematic liquid crystal on the optical and electro-optic properties of the final colloidal liquid crystal mixture” – Back Cover
  • V. Yathindranath, K. Potter, C. B. Fowler, T. Hegmann, J. van Lierop, D. F. Moore, Nanotechnology 2009, 20, 405101. “Simultaneous magnetically-directed drug convection and MR imaging” – Article of Particular Interest by the Editor & Highlighted in IOP’s www.nanotechweb.org/cws/article/lab/40670
  • H. Qi, T. Hegmann, ACS Appl. Mater. Interfaces 2009, 1, 1731-1738. “Multiple alignment modes for nematic liquid crystals doped with alkylthiol-capped gold nanoparticles”
  • H. Qi, B. Kinkead, V. M. Marx, H. R. Zhang, T. Hegmann, ChemPhysChem 2009, 10, 1211-1218. “Miscibility and alignment effects of mixed monolayer cyanobiphenyl liquid crystal-capped gold nanoparticles in nematic cyanobiphenyl liquid crystal hosts”
  • T. Hegmann, H. Qi, B. Kinkead, V. M. Marx, H. Girgis, P. A. Heiney, Can. Metall. Quarterly 2009, 48, 1-9. “Functionalized metal and semiconductor nanoparticle doped liquid crystals - Modifying optical and electro-optical properties”
  • H. Qi, T. Hegmann, J. Am. Chem. Soc. 2008, 130, 14201-14206. “Post-synthesis racemization and place exchange reactions – one step further to understand the origin of chiral ligand-capped gold nanoparticle chirality”
  • H. Qi, T. Hegmann, J. Mater. Chem. 2008, 18, 3288-3294. “Impact of nanoscale particles and carbon nanotubes on current and future generations of liquid crystal displays” – Invited Highlight & Inside Cover Article
  • V. M. Marx, H. Girgis, P. A. Heiney, T. Hegmann, J. Mater. Chem. 2008, 18, 2983-2994. “Bent- core LC decorated gold nanoclusters: Synthesis, self-assembly, and effects in mixtures with bent-core LC hosts”
  • H. Qi, B. Kinkead, T. Hegmann, Proc. SPIE 2008, 6911, 691106 (11 pages). “Effects of functionalized metal and semiconductor nanoparticles in nematic liquid crystals”
  • H. Qi, B. Kinkead, T. Hegmann, Adv. Funct. Mater. 2008, 18, 212-221. “Unprecedented dual alignment mode and Freedericksz transition in planar nematic liquid crystal cells doped with gold nanoclusters” – Inside Cover Article
  • H. Qi, J. O’Neil, T. Hegmann, J. Mater. Chem. 2008, 18, 374-380. “Chirality transfer in nematic liquid crystals doped with (S)-Naproxen functionalized gold nanoclusters: An induced circular dichroism study”
  • M. P. Thompson, T. Hegmann, M. D. Wand, R. P. Lemieux, Liq. Cryst. 2007, 34, 987-994. “Ferroelectric liquid crystal dopants with a chiral (R,R)-2,3-difluorooctyloxy side chain: Host dependence of the polarization power”
  • H. Qi, A. Lepp, P. A. Heiney, T. Hegmann, J. Mater. Chem. 2007, 17, 2139-2144. “Effects of hydrophilic and hydrophobic gold nanoclusters on the stability and ordering of bolaamphiphilic liquid crystals”
  • T. Hegmann, H. Qi, V. Marx, J. Inorg. Organomet. Polym. & Mater. 2007, 17, 483-508. “Nanoparticles and liquid crystals: synthesis, self-assembly, defect formation and potential applications”
  • K. Kaznatcheev, T. Hegmann, Phys. Chem. Chem. Phys. 2007, 9, 1705-1712. “Molecular ordering in a biaxial smectic-A phase studied by scanning transmission x-ray microscopy (STXM)” – Hot Paper & Cover Article
  • H. Qi, T. Hegmann, J. Mater. Chem. 2006, 16, 4197-4205. “Formation of periodic stripe patterns in nematic liquid crystals doped with functionalized gold nanoparticles” – Cover Article
  • C. Damm, G. Israel, T. Hegmann, C. Tschierske, J. Mater. Chem. 2006, 16, 1808-1816. “Luminescence and photoconductivity in mononuclear ortho-platinated metallomesogens”
  • N. Sertova, M. Toulemonde, T. Hegmann, J. Inorg. Organomet. Polym. & Mater. 2006, 16, 91-96. “Towards recyclable nanoporous polymer membranes for the synthesis of one-dimensional nanoscale gold colloids”
  • T. Hegmann, B. Neumann, R. Wolf, C. Tschierske, J. Mater. Chem. 2005, 15, 1025-1034. “Liquid crystalline paracyclophanes and ansa compounds – Series of polyether macrocycles incorporating diacetylene, phenyl, biphenyl, p-terphenyl and 2,5-diphenyl-1,3,4-thiadiazole rigid cores”
  • T. Hegmann, M. R. Meadows, M. D. Wand, R. P. Lemieux, J. Mater. Chem. 2004, 14, 185-190. “Ferroelectric liquid crystal induced by atropisomeric biphenyl dopants: Influence of the SmC host mixture composition”
  • T. Hegmann, J. Kain, S. Diele, B. Schubert, H. Bögel, C. Tschierske, J. Mater. Chem. 2003, 13, 991- 1003. “Molecular design at the calamitic/discotic cross-over point. Mononuclear ortho-metallated mesogens based on the combination of rod-like phenylpyrimidines and -pyridines with bent or half-disc-shaped diketonates”
  • B. Neumann, T. Hegmann, C. Wagner, P. R. Ashton, R. Wolf, C. Tschierske, J. Mater.Chem. 2003, 13, 778-784. “Liquid crystalline macrocycles containing phenylpyrimidine units”
  • T. Hegmann, R. P. Lemieux, J. Mater. Chem. 2002, 12, 3368-3370. “Large electroclinic effect in SmA* liquid crystals induced by an atropisomeric biphenyl dopant”
  • T. Hegmann, J. Kain, S. Diele, G. Pelzl, C. Tschierske, Angew. Chem., Int. Ed. 2001, 40, 887-890. “Evidence for the existence of the McMillan phase in a binary system of a metallomesogen and 2,4,7- trinitrofluorenone”
  • M. T. Allen, S. Diele, K. D. M. Harris, T. Hegmann, B. M. Kariuki, D. Lose, J. A. Preece, C. Tschierske, J. Mater. Chem. 2001, 11, 302-311. “Intermolecular organization of triphenylene-based discotic mesogens by interdigitation of alkyl chains”
  • T. Hegmann, B. Neumann, S. Diele, C. Tschierske, J. Mater. Chem. 2000, 10, 2244-2248. “Butterfly-mesogens: Paracyclophane based macrocyclic metallomesogens forming smectic and columnar liquid crystalline phases”
  • T. Hegmann, F. Peidis, S. Diele, C. Tschierske, Liq. Cryst. 2000, 27, 1261-1265. “Combination of molecular rods and half-discs: Transition from lamellar to columnar order in multichain mononuclear ortho-palladated metallomesogens”
  • M. T. Allen, K. D. M. Harris, B. M. Kariuki, N. Kumari, J. A. Preece, S. Diele, D. Lose, T. Hegmann, C. Tschierske, Liq. Cryst. 2000, 27, 689-692. “Intermolecular organization of triphenylene-based discotic mesogens by interdigitation of alkyl chains”
  • A. Pegenau, T. Hegmann, C. Tschierske, S. Diele, Chem.-Eur. J. 1999, 5, 1643-1660. “The importance of micro-segregation for mesophase formation: Thermotropic columnar mesophases of tetrahedral and other low-aspect-ratio organic materials”
  • B. Neumann, T. Hegmann, R. Wolf, C. Tschierske, Chem. Commun. 1998, 105-106. “Binuclear cyclopalladated cyclophanes: Towards a new family of metallomesogens”

 

PATENTS

  • M. Prévôt, A. Nemati, J. Vanegas García, E. Hegmann, T. Hegmann, 11/2018, US PCT 62/586,304, “Detection of gases and vapors by patterned nanoparticle liquid crystal alignment”
  • M. Reznikov, A. Sharma, T. Hegmann, 04/15/2013, US PCT 61/853994 "Patterned liquid crystal alignment layers via nanoparticle printing".
  • A. Neshat, A. Sharma, T. Hegmann, E. Hegmann, 04/15/2013, US PCT 61/853993 "Biodegradable side-chain LC elastomers: smart responsive scaffolds".
  • B. Kinkead, T. Hegmann, 2012, US 8,323,755 "Planar nematic liquid crystal cells doped with gold nanoparticles and methods of inducing a Freedericksz transition".
  • V. Yathindranath, D. F. Moore, J. van Lierop, T. Hegmann, 2013, US 8,383,085 "Methods of making iron containing nanoparticles".
  • V. Yathindranath, T. Hegmann, J. van Lierop, D. F. Moore, 2008, US PCT 61/055,683 "Magnetically directed drug convection".
  • H. Qi, T. Hegmann, 2011, US 8,071,181. "Metal nanoparticles and use thereof for inducing chirality in liquid crystal phases" (International: 12/086,720).
  • H. Qi, T. Hegmann, 2012, US 8,294,838. "Planar nematic liquid crystal cells doped with gold nanoparticles and methods of inducing a Freedericksz transition".
  • V. M. Marx, T. Hegmann, 2012, US 8,092,712. "Bent-core LC decorated gold nanoparticles".
  • M. Worden, Z. Sun, D. M. Miller, T. Hegmann, 2015, US PCT 62/169,602“Aqueous synthesis of polyhedral “brick-like” iron oxide nanoparticles for hyperthermia and T2 MRI contrast enhancement, and for targeting endothelial cells for therapeutic delivery”
  • Y. Gao, T. Hegmann, E. Hegmann, 2014, US PCT /US2014/071618 “Biocompatible smart responsive scaffold having interconnected pores”
Education
M.Sc., (diploma) Martin Luther University, Halle (Germany), 1996, Ph.D., Martin Luther University, Halle (Germany), 2001, PDF, Queen's University, Kingston, ON (Canada), 2001-2003
Expertise
Liquid Crystals, Nanoparticles, Nanocomposites, Drug Delivery, Chemical Synthesis, Nanomaterials, nanoscale chirality, magnetic nanomaterials and brain drug delivery, liquid crystal sensors
Research Institutes and Initiatives
Advanced Materials and Liquid Crystal Institute, Brain Health Research Institute