报告题目：Chemistry for Nano, and Nano for Medicine & Energy
报 告 人: Taeghwan Hyeon
Center for Nanoparticle Research, Institute for Basic Science (IBS)
School of Chemical and Biological Engineering, Seoul National University
时 间: 2018年12月14日（周五）上午10:00
地 点: 厦门大学化学化工学院化学报告厅
Over the last 20 years, our laboratory has focused on the
designed chemical synthesis, assembly and applications of uniform-sized
nanocrystals. In particular, we developed a novel generalized procedure called
as the “heat-up process” for the direct synthesis of uniform-sized nanocrystals
of many metals, oxides, and chalcogenides.1 For the last 10 years, our group has
been focused on medical applications of various uniform-sized nanoparticles.
Very recently, we report that uniform-sized iron oxide nanoclusters can be
successfully used as T1 MR contrast agent for high-resolution MR angiography of
macaque monkeys.2 We reported the first successful demonstration of
high-resolution in vivo three-photon imaging using biocompatible and bright Mn2+
doped ZnS nanocrystals.3
I will present recent advances on the fabrication of
stretchable electronic & optoelectronic devices integrated with various
functional nanomaterials and their applications to wearable & implantable
healthcare devices. We reported graphene-hybrid electrochemical devices
integrated with thermo-responsive micro-needles for the sweat-based diabetes
monitoring and feedback therapy.4,5 We introduced electromechanical cardioplasty
using an epicardial mesh made of electrically conductive and elastic Ag
nanowire-rubber composite material to resemble the innate cardiac tissue and
confer cardiac conduction system function.6
Recently we have focused on the architecture engineering of
nanomaterials for their applications to lithium ion battery, fuel cell
electrocatalysts, solar cells, and thermoelectrics. We reported the first
demonstration of galvanic replacement reactions in metal oxide nanocrystals, and
were able to synthesize hollow nanocrystals of various multimetallic oxides
including Mn3O4/γ-Fe2O3.7 We report a simple synthetic method of carbon-based
hybrid cellular nanosheets loaded with SnO2 nanoparticles.8 We designed hollow
anatase TiO2 nanostructures composed of interconnected ~5 nm-sized nanocrystals,
which can individually reach the theoretical lithium storage limit and maintain
a stable capacity during prolonged cycling.9 These iron oxide-based
nanomaterials exhibited very high specific capacity and good cyclability for
lithium ion battery anodes. We present a synthesis of highly durable and active
electrocatalysts based on ordered fct-PtFe nanoparticles and FeP nanoparticles
coated with N-doped carbon shell.10,11
1. "Ultra-Large Scale Syntheses of Monodisperse Nanocrystals,"
Nature Mater. 2004, 3, 891.
2. “Iron oxide nanoclusters for T1 MRI of nonhuman primates,”
Nature Biomed. Eng. 2017, 1, 637.
3. “High-Resolution Three-Photon Biomedical Imaging using Doped
ZnS Nanocrystals,” Nature Mater. 2013, 12, 359.
4. “A graphene-based electrochemical device with
thermo-responsive microneedles for diabetes monitoring and therapy,” Nature
Nanotech. 2016, 11, 566.
5. “Wearable/disposable sweat-based glucose monitoring device
with multi-stage transdermal drug delivery module,” Science Adv. 2017, 3,
6. “Electromechanical cardioplasty using a wrapped
elasto-conductive epicardial mesh,” Science Transl. Med. 2016, 8, 344ra86;
“Highly conductive, stretchable, and biocompatible Ag-Au core-sheath nanowire
composite for wearable and implantable bioelectronics,” Nature Nanotech. 2018,
7. “Galvanic Replacement Reactions in Metal Oxide
Nanocrystals,” Science 2013, 340, 964.
8. “Hybrid Cellular Nanosheets for High-Performance Lithium Ion
Battery Anodes,” J. Am. Chem. Soc. 2015, 137, 11954.
9. “Engineering Titanium Dioxide Nanostructures for Enhanced
Lithium-Ion Storage,” J. Am. Chem. Soc., 2018, 140, in press.
10. “Highly durable and active PtFe nanocatalyst for
electrochemical oxygen reduction reaction,” J. Am. Chem. Soc. 2015, 137,
11. “Large-scale Synthesis of Carbon Shell-coated FeP
Nanoparticles for Robust Hydrogen Evolution Reaction Electrocatalyst,” J. Am.
Chem. Soc. 2017, 139, 6669.
Chem. Soc. (JACS)副主编，同时担任Advanced Materials, Nano Today, ACS Central
Nature Mater., Nature Nanotechnol., Nature Comm., J. Am. Chem. Soc., Angew.