Grace G D Han
Degrees
Massachusetts Institute of Technology, Ph.D.Expertise
Organic materials chemistry; photo-switching chemistry; solar energy conversion and storageProfile
Research in our group focuses on developing a wide range of versatile and unique optically controlled molecular switches for energy conversion/storage and optoelectronic applications. Photo-switchable molecular systems are triggered by absorbing light and rapidly respond via structural change that provides control over a broad array of properties in diverse organic and inorganic systems. These reversible switches allow for the repeatable operation of energy harvesting schemes on a large scale as well as the discrete on/off modulation of nanoscale devices via their structural and electrical changes at the molecular level.Courses Taught
| CHEM | 121a | Inorganic Chemistry I, Lectures |
| CHEM | 161a | Polymer and Inorganic Materials Chemistry |
| CHEM | 300c | Chemistry Colloquium |
Scholarship
M. A. Gerkman, S. Sinha, J. H. Warner, and G. G. D. Han*. "Direct Imaging of Photoswitching Molecular Conformations Using Individual Metal Atom Markers." ACS Nano 13. 1 (2019): 87-96.
S. Fang, Y. Wen, C. S. Allen, C. Ophus, G. G. D. Han, A. I. Kirkland, E. Kaxiras, and J. H. Warner. "Atomic Electrostatic Maps of 1D Channels in 2D Semiconductors using 4D Scanning Transmission Electron Microscopy." Nat. Commun. 10. (2019): 1127.
G. G. D. Han, B. Smith, W. Xu, J. H. Warner, and J. C. Grossman. "Nanoporous Silicon-Assisted Patterning of Monolayer MoS2 with Thermally Controlled Porosity: A Scalable Method for Diverse Applications." ACS Appl. Nano Mater. 1. 7 (2018): 3548–3556.
G. G. D. Han, J. H. Deru, E. N. Cho, and J. C. Grossman. "Optically Regulated Thermal Energy Storage in Diverse Organic Phase-Change Materials." Chem. Commun. 54. (2018): 10722–10725.
E. N. Cho, D. Zhitomirsky, G. G. D. Han, Y. Liu, and J. C. Grossman. "Molecularly Engineered Azobenzene Derivatives for High Energy Density Solid-State Solar Thermal Fuels." ACS Appl. Mater. Interfaces 9. 10 (2017): 8679–8687.
G. G. D. Han, H. Li, and J. C. Grossman. "Optically-Controlled Long-Term Storage and Release of Thermal Energy in Phase-Change Materials." Nat. Commun. 8. (2017): 1446.
G. G. D. Han, K.-H. Tu, F. Niroui, W. Xu, S. Zhou, X. Wang, V. Bulović, C. A. Ross, J. H. Warner, and J. C. Grossman. "Photoluminescent Arrays of Nano-Patterned Monolayer MoS2." Adv. Funct. Mater. 27. (2017): 1703688.
H. Li, S. Wang, H. Sawada, G. G. D. Han, T. Samuels, C. S. Allen, A. I. Kirkland, J. C. Grossman, and J. H. Warner. "Atomic Structure and Dynamics of Single Pt Atom Interactions with Monolayer MoS2." ACS Nano 11. 3 (2017): 3392-3403.
S. Wang, H. Sawada, Q. Chen, G. G. D. Han, C. S. Allen, A. I. Kirkland, and J. H. Warner. "In Situ Atomic-Scale Studies of the Formation of Epitaxial Pt Nanocrystals on Monolayer Molybdenum Disulfide." ACS Nano 11. 9 (2017): 9057-9067.
G. D. Han, A. Maurano, J. G. Weis, V. Bulović, and T. M. Swager. "VOC Enhancement in Polymer Solar Cells with Isobenzofulvene–C60 Adducts." Org. Electron. 31. (2016): 48-55.
G. D. Han, S. S. Park, Y. Liu, D. Zhitomirsky, E. Cho, M. Dincă, and J. C. Grossman. "Photon Energy Storage Materials with High Energy Densities Based on Diacetylene–Azobenzene Derivatives." J. Mater. Chem. A 4. (2016): 16157-16165.
S. Chang, G. D. Han, J. G. Weis, H. Park, O. Hentz, Z. Zhao, T. M. Swager, and S. Gradečak. "Transition Metal-Oxide Free Perovskite Solar Cells Enabled by a New Organic Charge Transport Layer." ACS Appl. Mater. Interfaces 8. 13 (2016): 8511–8519.