Shuxin Hu
Chinese Academy of Sciences
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Publication
Featured researches published by Shuxin Hu.
Advanced Materials | 2015
Hongliang Chen; Shaohua Dong; Meilin Bai; Nongyi Cheng; Hao Wang; Mingliang Li; Huiwen Du; Shuxin Hu; Yanlian Yang; Tieying Yang; Fan Zhang; Lin Gu; Sheng Meng; Shimin Hou; Xuefeng Guo
Low-voltage, low-cost, high-performance monolayer field-effect transistors are demonstrated, which 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. These monolayer field-effect transistors are light-sensitive and are able to function as reporters to convert analyte binding events into electrical signals with ultrahigh sensitivity (≈10 ppb).
Chemical Communications | 2008
Shuxin Hu; Xinyu Cao; Yanlin Song; Chao Li; Ping Xie; Lei Jiang
A reversible switch between superhydrophobicity at low temperature and superhydrophilicity at high temperature was fabricated by coating poly(epsilon-caprolactone) on a rough substrate, which resulted from the combination of the different adaptability of the polymer chain upon crystalline/amorphous phase transition and the optimized roughness.
ACS Nano | 2016
Hongliang Chen; Nongyi Cheng; Wei Ma; Mingliang Li; Shuxin Hu; Lin Gu; Sheng Meng; Xuefeng Guo
Organic field-effect transistors (OFETs) featuring a photoactive hybrid bilayer dielectric (PHBD) that comprises a self-assembled monolayer (SAM) of photochromic diarylethenes (DAEs) and an ultrathin solution-processed hafnium oxide layer are described here. We photoengineer the energy levels of DAE SAMs to facilitate the charging and discharging of the interface of the two dielectrics, thus yielding an OFET that functions as a nonvolatile memory device. The transistors use light signals for programming and electrical signals for erasing (≤3 V) to produce a large, reversible threshold-voltage shift with long retention times and good nondestructive signal processing ability. The memory effect can be exercised by more than 10(4) memory cycles. Furthermore, these memory cells have demonstrated the capacity to be arrayed into a photosensor matrix on flexible plastic substrates to detect the spatial distribution of a confined light and then store the analog sensor input as a two-dimensional image with high precision over a long period of time.
Nature Communications | 2016
Ying Li; Zhenyu Qian; Li Ma; Shuxin Hu; Daguan Nong; Chunhua Xu; Fangfu Ye; Ying Lu; Guanghong Wei; Ming Li
Research on the dynamics of single-membrane proteins remains underdeveloped due to the lack of proper approaches that can probe in real time the proteins insertion depth in lipid bilayers. Here we report a single-molecule visualization method to track both vertical insertion and lateral diffusion of membrane proteins in supported lipid bilayers by exploiting the surface-induced fluorescence attenuation (SIFA) of fluorophores. The attenuation follows a d−4 dependency, where d is the fluorophore-to-surface distance. The method is validated by observing the antimicrobial peptide LL-37 to transfer among five transmembrane positions: the surface, the upper leaflet, the centre, the lower leaflet and the bottom of the lipid bilayer. These results demonstrate the power of SIFA to study protein-membrane interactions and provide unprecedented in-depth understanding of molecular mechanisms of the insertion and translocation of membrane proteins.
Nano Letters | 2017
Renwei Liu; Suna Fan; Dongdong Xiao; Jin Zhang; Mengzhou Liao; Shansheng Yu; Fanling Meng; Baoli Liu; Lin Gu; Sheng Meng; Guangyu Zhang; Weitao Zheng; Shuxin Hu; Ming Li
Organic two-dimensional (2D) crystals are fundamentally important for development of future devices. Despite that more than a half of man-made products contain polymers, 2D crystals consisting of long linear chains have yet to be explored. Here we report on the fabrication of 2D polyaniline (PANI) crystals via rational electrochemical polymerization followed by liquid-phase exfoliation. The 2D PANI is molecularly thin (∼0.8 nm) and composed of PANI chains with a number-average molecular weight of ∼31u202f000. The chains are parallel to each other with the benzene rings standing almost vertically to the surface, implying a face-to-face arrangement of the neighboring chains held together by abundant π-π interactions augmented with hydrogen bonds. The 2D PANI can be readily transferred to various solid surfaces and exhibit interesting electrical and optical properties, suggesting that they would be potentially useful in photoelectronic devices and other applications.
Chinese Physics B | 2015
Ying Li; Renwei Liu; Li Ma; Suna Fan; Hui Li; Shuxin Hu; Ming Li
Precise control over the photoluminescence (PL) of single quantum dots (QDs) is important for their practical applications. We show that the PL of individual CdSe/ZnS core/shell QDs can be effectively enhanced and continuously modulated by electrochemically manipulating the electron transfer (ET) between the QDs and the attached redox-active ligands such as 2-mercaptoethanol (BME). We found that i) the ET from BME to the QDs surface trap states suppresses the blinking of the QDs, ii) the ET from the QDs conduction band to the oxidization product results in dimmed PL when BME is oxidized, and iii) further oxidization of BME results in a significant PL brightening. The single particle measurements help us unveil the important features hidden in ensemble measurements and understand the underlying mechanism of the PL modulation. The results also suggest a simple yet efficient method to produce bright and non-blinking QDs and offer opportunities for further development of high resolution fluorescent bioimaging and nanodevices.
Biochemistry | 2018
Li Ma; Ying Li; Jianbing Ma; Shuxin Hu; Ming Li
It is challenging to assess protein-membrane interactions because of the lack of appropriate tools to detect position changes of single proteins in the ∼4 nm range of biological membranes. We developed an assay recently, termed surface-induced fluorescence attenuation (SIFA). It is able to track both vertical and lateral dynamic motion of singly labeled membrane proteins in supported lipid bilayers. Similar to the FRET (fluorescence resonance energy transfer) principle, SIFA takes advantage of the energy transfer from a fluorophore to a light-absorbing surface to determine the distance at 2-8 nm away from the surface. By labeling a protein with a proper fluorophore and using graphene oxide as a two-dimensional quencher, we showed that SIFA is capable of monitoring three-dimensional movements of the fluorophore-labeled protein not only inside but also above the lipid bilayer atop the graphene oxide. Our data show that SIFA is a well-suited method to study the interplay between proteins and membranes.
Chinese Physics B | 2017
Suna Fan; Renwei Liu; Ruisong Ma; Shansheng Yu; Ming Li; Weitao Zheng; Shuxin Hu
Two-dimensional (2D) organic nanomaterials are fascinating because of their unique properties and pentential applications in future optoelectronic devices. Polyaniline (PANI) has attracted much attention for its high conductivity, good environmental stability and unusual doping chemistry. We report on liquid-phase exfoliation of layered PANI films grown by electrochemical polymerization. Atomic force microscopy images demonstrate that few- or even mono-layer PANI nanosheets can be fabricated. The PANI nanosheets can be transferred onto a variety of surfaces, providing a promising route to their incorporation into a variety of devices for further studies and various applications.
Advanced Materials | 2009
Chao Li; Renwei Guo; Xi Jiang; Shuxin Hu; Lin Li; Xinyu Cao; Huai Yang; Yanlin Song; Yongmei Ma; Lei Jiang
Archive | 2011
Chao Li; Shuxin Hu; Lei Jiang; Xinyu Cao