研究领域

Organic and Materials Chemistry

The Tovar group is interested in the synthesis and investigation of organic materials with extended pi-electron conjugation. These types of materials are currently receiving significant attention due to their useful properties akin to those of traditional semiconductors or metals such as luminescence, electrochromism and light harvesting. We use molecular design as a tool to predict, control and seek a better understanding of energy transport processes through these organic electronic materials to enable their employment in emerging applications ranging from inexpensive flexible circuitry and devices to active biomedical materials. Research projects in our group provide students with extensive experience in organic synthesis (aromatic, polymer and peptide chemistries) along with optical and electrochemical characterization techniques. You can learn more specifics about these projects on our group webpage linked above.

近期论文

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B. C. Streifel, J. L. Zafra, G. L. Espejo, C. J. Gómez-García, J. Casado and J. D. Tovar, "An unusually small singlet-triplet gap in a quinoidal 1,6-methano[10]annulene due to Baird’s 4n pi-electron triplet stabilization," Angew. Chem. Int. Ed., revisions requested. H. A. M. Ardoña, K. Besar, M. Togninalli, H. E. Katz and J. D. Tovar, "Sequence-dependent mechanical, photophysical and electrical transport properties of pi-conjugated peptide hydrogelators," J. Mater. Chem. C (part of a special themed issue on bioelectronics), revisions requested. R. E. Messersmith and J. D. Tovar, "Assessment of the aromaticity of borepin rings by spectroscopic, crystallographic, and computational methods: a historical overview," J. Phys. Org. Chem., accepted (cover article). J. D. Tovar, "Peptide nanostructures with pi-ways: photophysical consequences of peptide/pi-electron molecular self-assembly," invited by the Israel Journal of Chemistry, submitted. H. A. M. Ardoña and J. D. Tovar, "Energy transfer within responsive pi-conjugated peptide-based coassembled nanostructures in aqueous environments," Chem. Sci., 2015, 6, 1474-1484. DOI: 10.1039/C4SC03122A B. D. Wall, Y. Zhou, S. Mei, H. A. M. Ardoña, A. L. Ferguson and J. D. Tovar, "Variation of formal hydrogen bonding networks within electronically delocalized pi-conjugated oligopeptide nanostructures," Langmuir, 2014, 11375-11385. DOI: 10.1021/la501999g. B. C. Streifel, J. F. Martinez-Hardigree, H. E. Katz, and J. D. Tovar, "Heteroaromatic variation in amorphous 1,6-methano[10]annulene-based charge-transporting organic semiconductors," J. Mater. Chem. C, 2014, 7851-7858. DOI: 10.1039/c4tc01326c D. R. Levine, M. A. Siegler, and J. D. Tovar, "Thiophene-Fused Borepins as Directly Functionalizable Boron-Containing π-Electron Systems," J. Am. Chem. Soc., 2014, 136, 7132-7139. DOI: 10.1021/ja502644e B. D. Wall, A. E. Zacca, A. M. Sanders, W. L. Wilson, A. L. Ferguson and J. D. Tovar, "Supramolecular polymorphism: Tunable electronic interactions within pi-conjugated peptide nanostructures dictated by primary amino acid sequence," Langmuir, 2014, 30, 5946-5956. DOI: 10.1021/la500222y J. D. Tovar, "Prospecting in Hückel space: From Hinokitiol to Non-benzenoid Organic Electronic Materials," invited by The Chemical Record as an introductory essay for the Tetsuo Nozoe Autograph Book project, 2014, 14, 214-225. DOI: 10.1002/tcr.201300034 A. M. Sanders and J. D. Tovar, "Solid-phase Pd-catalyzed cross-coupling methods for the construction of π-conjugated peptide nanomaterials," Supramol. Chem., 2014, 26, 259-266. DOI:10.1080/10610278.2013.852675 A. B. Marciel, M. Tanyeri, B. D. Wall, J. D. Tovar, C. M. Schroeder, and W. L. Wilson. "Fluidic-Directed Assembly of Aligned Oligopeptides with π-Conjugated Cores," Adv. Mater., 2013, 25, 6398-6404. DOI: 10.1002/adma.201302496 S. R. Diegelmann and J. D. Tovar, "Polydiacetylene-Peptide 1-D Nanomaterials," Macromol. Rapid Commun., 2013, 34, 1343-1350. (invited feature article). DOI: 10.1002/marc.203100423 A. M. Fraind, G. Sini, C. M. Risko, L. R. Ryzhkov, J.-L. Brédas and J. D. Tovar, "Charge Delocalization Through Benzene, Naphthalene, and Anthracene Bridges in π-Conjugated Oligomers: An Experimental and Quantum Chemical Study," J. Phys. Chem. B, 2013, 117, 6304-6317. DOI: 10.1021/jp401448a. J. D. Tovar, "Supramolecular Construction of Optoelectronic Biomaterials," Acc. Chem. Res., 2013, 46, 1527-1537. DOI: 10.1021/ar3002969. D. Hagaman, J. Gredzik, P. A. Peart, J. D. Tovar, A. Sidorenko, "Block copolymer supramolecular assembly using a precursor to a novel conjugated polymer," Polym. Chem., 2013, 4, 1482-1490. DOI: 10.1039/C2PY20680C