High-Performance Monolayer Field-Effect Transistors with Aqueous Stability and High Sensitivity

Low-voltage, low-cost, high-performance monolayer field-effect transistors that comprise a densely-packed, long-range ordered monolayer, spin-coated from core-cladding liquid-crystalline pentathiophenes, and a solution-processed high-k HfO2-based nanoscale gate dielectric have been developed. These monolayers are light-sensitive and are able to function as reporters to convert analyte binding events into electrical signals with ultrahigh sensitivity (ca. 10 ppb).

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Research Fields

One remarkable aspect in Chemistry is its powerful ability to create new materials; one remarkable aspect in Physics is its powerful ability to investigate the intrinsic properties of these materials, the combination of both enables us to reveal the details of nature and change nature. The research in our molecular materials and devices lab is focused on exploring the optoelectronic properties of novel functional molecular materials and/or low dimensional nanomaterials at the nanometer or molecular level, such as electron transport properties, optoelectronic properties and stimuli-responsive abilities. These materials include single organic molecules/molecular clusters, carbon nanotubes, organic/inorganic nanowires, graphene, biomacromolecules, nanoparticles, and so on. These are challenging and predictable but active and interdisciplinary frontier research areas with many opportunities and great potential applications. Graduate and postdoctoral students working on these projects will have been extensively well-trained in all aspects, including organic syntheses, assembly techniques, micro/nanofabrications, and detection systems. Specifically, our research focuses are listed below:

1. Nano/molecular electronics;

2. Single-molecule dynamics and detection;

3. Organic/flexible electronics;

4. Chemo/biosensors

News & Events


Welcome Dr. Vjekoslav Dekaris, Editor of Chem, Cell Press to visity our group.


Welcome Prof. David A. Leigh from University of Manchester, United Kingdom to visity our group.


Welcome Prof. Mitsuhiko SHIONOYA from the University of Tokyo to visity our group.


 Welcome Prof. Jinxian Yu from University of Adelaide, Australia to visity our group.


The article "Tuning Charge Transport in Aromatic‐Ring Single‐Molecule Junctions via Ionic Liquid Gating" by Na Xin, Chuancheng Jia et. al. was accepted by Angew. Chem. Int. Ed.


Welcome Prof. Philip Kim from Harvard University to visity our group.


Welcome Dr. Michael Lee (Editor of Nature Electronics) to visit our group.


Congratulations to Na Xin for the "Excellent Doctoral Dissertation of PKU" and "Outstanding Acdemic Reward of PKU".  



Welcome Prof. Xiaoyang Zhu from Columbia University in the City of New York to visit our group.

The article "Direct observation of single-molecule hydrogen-bond dynamics with single-bond resolution" by Ce Zhou et. al. was accepted by Nature Communications.

The article "Direct Single-Molecule Dynamic Detection of Chemical Reactions" by Jianxin Guan, Chuancheng Jia et. al. was accepted by Science Advances.

Welcome Prof. Qian Miao from the Chinese University of Hong Kong to visit our group.