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1. SiRA: A Silicon Rhodamine-Binding Aptamer for Live-Cell Super-Resolution RNA Imaging

Author:
Gao, Peng,   et al.   ; Wirth, Regina; Nienhaus, G. Ulrich; Sunbul, Murat; Jäschke, Andres;     Show all 5 Authors
Source:
Journal of the American Chemical Society 2019 v.141 no.18 pp. 7562-7571
ISSN:
1520-5126
Subject:
RNA libraries; bacteria; bioinformatics; fluorescence; fluorescent dyes; image analysis; ligands; messenger RNA; microscopy; near-infrared spectroscopy; nucleotide aptamers; permeability; photobleaching; rhodamines; silicon; zwitterions
Abstract:
... Although genetically encoded light-up RNA aptamers have become promising tools for visualizing and tracking RNAs in living cells, aptamer/ligand pairs that emit in the far-red and near-infrared (NIR) regions are still rare. In this work, we developed a light-up RNA aptamer that binds silicon rhodamines (SiRs). SiRs are photostable, NIR-emitting fluorophores that change their open–closed equilibriu ...
DOI:
10.1021/jacs.9b02697

2. Millimeter-Scale Single-Crystalline Semiconducting MoTe₂ via Solid-to-Solid Phase Transformation

Author:
Gao, Peng,   et al.   ; Xu, Xiaolong; Chen, Shulin; Liu, Shuai; Cheng, Xing; Xu, Wanjin; Li, Pan; Wan, Yi; Yang, Shiqi; Gong, Wenting; Yuan, Kai; Ye, Yu; Dai, Lun;     Show all 13 Authors
Source:
Journal of the American Chemical Society 2019 v.141 no.5 pp. 2128-2134
ISSN:
1520-5126
Subject:
Gibbs free energy; Raman spectroscopy; X-ray photoelectron spectroscopy; density functional theory; energy-dispersive X-ray analysis; molybdenum; phase transition; semiconductors; transmission electron microscopy
Abstract:
... Among the Mo- and W-based two-dimensional (2D) transition metal dichalcogenides, MoTe₂ is particularly interesting for phase-engineering applications, because it has the smallest free energy difference between the semiconducting 2H phase and metallic 1T′ phase. In this work, we reveal that, under the proper circumstance, Mo and Te atoms can rearrange themselves to transform from a polycrystalline ...
DOI:
10.1021/jacs.8b12230

3. Bioactive Functionalized Monolayer Graphene for High-Resolution Cryo-Electron Microscopy

Author:
Gao, Peng,   et al.   ; Liu, Nan; Zhang, Jincan; Chen, Yanan; Liu, Chuan; Zhang, Xing; Xu, Kui; Wen, Jie; Luo, Zhipu; Chen, Shulin; Jia, Kaicheng; Liu, Zhongfan; Peng, Hailin; Wang, Hong-Wei;     Show all 14 Authors
Source:
Journal of the American Chemical Society 2019 v.141 no.9 pp. 4016-4025
ISSN:
1520-5126
Subject:
binding capacity; cryo-electron microscopy; denaturation; graphene; histidine; ice; image analysis; liquid-air interface; proteins
Abstract:
... Single-particle cryo-electron microscopy (cryo-EM) has become one of the most essential tools to understand biological mechanisms at molecular level. A major bottleneck in cryo-EM technique is the preparation of good specimens that embed biological macromolecules in a thin layer of vitreous ice. In the canonical cryo-EM specimen preparation method, biological macromolecules tend to be adsorbed to ...
DOI:
10.1021/jacs.8b13038

4. Thermal Emitting Strategy to Synthesize Atomically Dispersed Pt Metal Sites from Bulk Pt Metal

Author:
Gao, Peng,   et al.   ; Qu, Yunteng; Chen, Bingxu; Li, Zhijun; Duan, Xuezhi; Wang, Liguang; Lin, Yue; Yuan, Tongwei; Zhou, Fangyao; Hu, Yidong; Yang, Zhengkun; Zhao, Changming; Wang, Jing; Zhao, Chao; Hu, Yanmin; Wu, Geng; Zhang, Qinghua; Xu, Qian; Liu, Bingyao; You, Rui; Huang, Weixin; Zheng, Lirong; Gu, Lin; Wu, Yuen; Li, Yadong;     Show all 25 Authors
Source:
Journal of the American Chemical Society 2019 v.141 no.11 pp. 4505-4509
ISSN:
1520-5126
Subject:
ammonia; catalysts; dicyandiamide; electrochemistry; gold; graphene; hydrogen production; oxidation; palladium; platinum; pyrolysis
Abstract:
... Developing a facile route to access active and well-defined single atom sites catalysts has been a major area of focus for single atoms catalysts (SACs). Herein, we demonstrate a simple approach to generate atomically dispersed platinum via a thermal emitting method using bulk Pt metal as a precursor, significantly simplifying synthesis routes and minimizing synthesis costs. The ammonia produced b ...
DOI:
10.1021/jacs.8b09834

5. Ultrafast Broadband Charge Collection from Clean Graphene/CH₃NH₃PbI₃ Interface

Author:
Gao, Peng,   et al.   ; Hong, Hao; Zhang, Jincan; Zhang, Jin; Qiao, Ruixi; Yao, Fengrui; Cheng, Yang; Wu, Chunchun; Lin, Li; Jia, Kaicheng; Zhao, Yicheng; Zhao, Qing; Xiong, Jie; Shi, Kebin; Yu, Dapeng; Liu, Zhongfan; Meng, Sheng; Peng, Hailin; Liu, Kaihui;     Show all 19 Authors
Source:
Journal of the American Chemical Society 2018 v.140 no.44 pp. 14952-14957
ISSN:
1520-5126
Subject:
density functional theory; electrodes; energy conversion; graphene; photoluminescence; photovoltaic cells; polymers; spectroscopy
Abstract:
... Photocarrier generation in a material, transportation to the material surface, and collection at the electrode interface are of paramount importance in any optoelectronic and photovoltaic device. In the last collection process, ideal performance comprises ultrafast charge collection to enhance current conversion efficiency and broadband collection to enhance energy conversion efficiency. Here, for ...
DOI:
10.1021/jacs.8b09353

6. Origins of Large Voltage Hysteresis in High-Energy-Density Metal Fluoride Lithium-Ion Battery Conversion Electrodes

Author:
Gao, Peng,   et al.   ; Li, Linsen; Jacobs, Ryan; Gan, Liyang; Wang, Feng; Morgan, Dane; Jin, Song;     Show all 7 Authors
Source:
Journal of the American Chemical Society 2016 v.138 no.8 pp. 2838-2848
ISSN:
1520-5126
Subject:
X-ray absorption spectroscopy; batteries; electrochemistry; electrodes; energy efficiency; fluorides; hysteresis; ions; iron; lithium; microstructure; oxides; reaction kinetics; titration; transmission electron microscopy
Abstract:
... Metal fluorides and oxides can store multiple lithium ions through conversion chemistry to enable high-energy-density lithium-ion batteries. However, their practical applications have been hindered by an unusually large voltage hysteresis between charge and discharge voltage profiles and the consequent low-energy efficiency (<80%). The physical origins of such hysteresis are rarely studied and poo ...
DOI:
10.1021/jacs.6b00061

7. Covalent Immobilization of a Molecular Catalyst on Cu2O Photocathodes for CO2 Reduction

Author:
Gao, Peng,   et al.   ; Schreier, Marcel; Luo, Jingshan; Moehl, Thomas; Mayer, Matthew T.; Grätzel, Michael;     Show all 6 Authors
Source:
Journal of the American Chemical Society 2016 v.138 no.6 pp. 1938-1946
ISSN:
1520-5126
Subject:
carbon; carbon cycle; carbon dioxide; catalysts; cathodes; cuprous oxide; solar energy; temperature; titanium dioxide
Abstract:
... Sunlight-driven CO₂ reduction is a promising way to close the anthropogenic carbon cycle. Integrating light harvester and electrocatalyst functions into a single photoelectrode, which converts solar energy and CO₂ directly into reduced carbon species, is under extensive investigation. The immobilization of rhenium-containing CO₂ reduction catalysts on the surface of a protected Cu₂O-based photocat ...
DOI:
10.1021/jacs.5b12157

8. Total Synthesis of Marine Glycosphingolipid Vesparioside B

Author:
Gao, Peng-Cheng,   et al.   ; Zhu, San-Yong; Cao, Hui; Yang, Jin-Song;     Show all 4 Authors
Source:
Journal of the American Chemical Society 2016 v.138 no.5 pp. 1684-1688
ISSN:
1520-5126
Subject:
glycolipids; stereochemistry
Abstract:
... The first total synthesis of a major component of marine glycolipid vesparioside B (Scheme 1, 1, R₁ = n-C₂₂H₄₅, R₂ = n-C₁₄H₂₉) has been accomplished through a convergent [4 + 3] coupling strategy. Key steps included stereoselective installment of a set of challenging 1,2-cis-glycoside bonds. A 2-quinolinecarbonyl-assisted α-galactosylation and a novel β-arabinosylation were developed, respectively ...
DOI:
10.1021/jacs.5b12589

9. PbI2–HMPA Complex Pretreatment for Highly Reproducible and Efficient CH3NH3PbI3 Perovskite Solar Cells

Author:
Gao, Peng,   et al.   ; Zhang, Yi; Oveisi, Emad; Lee, Yonghui; Jeangros, Quentin; Grancini, Giulia; Paek, Sanghyun; Feng, Yaqing; Nazeeruddin, Mohammad Khaja;     Show all 9 Authors
Source:
Journal of the American Chemical Society 2016 v.138 no.43 pp. 14380-14387
ISSN:
1520-5126
Subject:
X-ray diffraction; electron transfer; energy-dispersive X-ray analysis; lead; photovoltaic cells; polymers; statistical analysis; transmission electron microscopes
Abstract:
... Interfacial engineering of the meso-TiO₂ surface through a modified sequential deposition procedure involving a novel PbI₂–HMPA complex pretreatment is conducted as a reproducible method for preparing MAPbI₃ based perovskite solar cells providing the highest efficiencies yet reported with the polymer HTM layer. Grazing-incidence X-ray diffraction depth profiling confirms the formation of a perovsk ...
DOI:
10.1021/jacs.6b08347

10. Fast Growth of Strain-Free AlN on Graphene-Buffered Sapphire

Author:
Gao, Peng,   et al.   ; Qi, Yue; Wang, Yunyu; Pang, Zhenqian; Dou, Zhipeng; Wei, Tongbo; Zhang, Shishu; Xu, Xiaozhi; Chang, Zhenghua; Deng, Bing; Chen, Shulin; Chen, Zhaolong; Ci, Haina; Wang, Ruoyu; Zhao, Fuzhen; Yan, Jianchang; Yi, Xiaoyan; Liu, Kaihui; Peng, Hailin; Liu, Zhiqiang; Tong, Lianming; Zhang, Jin; Wei, Yujie; Li, Jinmin; Liu, Zhongfan;     Show all 25 Authors
Source:
Journal of the American Chemical Society 2018 v.140 no.38 pp. 11935-11941
ISSN:
1520-5126
Subject:
compression strength; developmental stages; graphene; light emitting diodes; tensile strength; thermal expansion
Abstract:
... We study the roles of graphene acting as a buffer layer for growth of an AlN film on a sapphire substrate. Graphene can reduce the density of AlN nuclei but increase the growth rate for an individual nucleus at the initial growth stage. This can lead to the reduction of threading dislocations evolved at the coalescence boundaries. The graphene interlayer also weakens the interaction between AlN an ...
DOI:
10.1021/jacs.8b03871

11. Redox-Active AIEgen-Derived Plasmonic and Fluorescent Core@Shell Nanoparticles for Multimodality Bioimaging

Author:
Gao, Peng Fei,   et al.   ; He, Xuewen; Zhao, Zheng; Xiong, Ling-Hong; Peng, Chen; Li, Rong Sheng; Xiong, Yu; Li, Zhi; Sung, Herman H.-Y.; Williams, Ian D.; Kwok, Ryan T. K.; Lam, Jacky W. Y.; Huang, Cheng Zhi; Ma, Nan; Tang, Ben Zhong;     Show all 15 Authors
Source:
Journal of the American Chemical Society 2018 v.140 no.22 pp. 6904-6911
ISSN:
1520-5126
Subject:
animals; biocompatibility; fluorescence; image analysis; ions; microscopy; nanoparticles; nanosilver; redox reactions; silver
Abstract:
... Multimodality imaging is highly desirable for accurate diagnosis by achieving high sensitivity, spatial–temporal resolution, and penetration depth with a single structural unit. However, it is still challenging to integrate fluorescent and plasmonic modalities into a single structure, as they are naturally incompatible because of significant fluorescence quenching by plasmonic noble-metal nanopart ...
DOI:
10.1021/jacs.8b02350

12. Triazatruxene-Based Hole Transporting Materials for Highly Efficient Perovskite Solar Cells

Author:
Gao, Peng,   et al.   ; Rakstys, Kasparas; Abate, Antonio; Dar, M. Ibrahim; Jankauskas, Vygintas; Jacopin, Gwénolé; Kamarauskas, Egidijus; Kazim, Samrana; Ahmad, Shahzada; Grätzel, Michael; Nazeeruddin, Mohammad Khaja;     Show all 11 Authors
Source:
Journal of the American Chemical Society 2015 v.137 no.51 pp. 16172-16178
ISSN:
1520-5126
Subject:
photoluminescence; photovoltaic cells; purification methods
Abstract:
... Four center symmetrical star-shaped hole transporting materials (HTMs) comprising planar triazatruxene core and electron-rich methoxy-engineered side arms have been synthesized and successfully employed in (FAPbI₃)₀.₈₅(MAPbBr₃)₀.₁₅ perovskite solar cells. These HTMs are obtained from relatively cheap starting materials by adopting facile preparation procedure, without using expensive and complicat ...
DOI:
10.1021/jacs.5b11076

13. Mesoscopic CH3NH3PbI3/TiO2 Heterojunction Solar Cells

Author:
Gao, Peng,   et al.   ; Etgar, Lioz; Xue, Zhaosheng; Peng, Qin; Chandiran, Aravind Kumar; Liu, Bin; Nazeeruddin, Md. K.; Grätzel, Michael;     Show all 8 Authors
Source:
Journal of the American Chemical Society 2012 v.134 no.42 pp. 17396-17399
ISSN:
1520-5126
Subject:
electric power; gold; iodides; light intensity; nanoparticles; nanosheets; photovoltaic cells; solar radiation; titanium dioxide
Abstract:
... We report for the first time on a hole conductor-free mesoscopic methylammonium lead iodide (CH₃NH₃PbI₃) perovskite/TiO₂ heterojunction solar cell, produced by deposition of perovskite nanoparticles from a solution of CH₃NH₃I and PbI₂ in γ-butyrolactone on a 400 nm thick film of TiO₂ (anatase) nanosheets exposing (001) facets. A gold film was evaporated on top of the CH₃NH₃PbI₃ as a back contact. ...
DOI:
10.1021/ja307789s

14. Room-Temperature Polar Ferromagnet ScFeO3 Transformed from a High-Pressure Orthorhombic Perovskite Phase

Author:
Gao, Peng,   et al.   ; Kawamoto, Takahiro; Fujita, Koji; Yamada, Ikuya; Matoba, Tomohiko; Kim, Sung Joo; Pan, Xiaoqing; Findlay, Scott D.; Tassel, Cédric; Kageyama, Hiroshi; Studer, Andrew J.; Hester, James; Irifune, Tetsuo; Akamatsu, Hirofumi; Tanaka, Katsuhisa;     Show all 15 Authors
Source:
Journal of the American Chemical Society 2014 v.136 no.43 pp. 15291-15299
ISSN:
1520-5126
Subject:
X-radiation; ambient temperature; ferrimagnetic materials; image analysis; ions; iron; magnetism; oxides; transmission electron microscopy
Abstract:
... Multiferroic materials have been the subject of intense study, but it remains a great challenge to synthesize those presenting both magnetic and ferroelectric polarizations at room temperature. In this work, we have successfully obtained LiNbO₃-type ScFeO₃, a metastable phase converted from the orthorhombic perovskite formed under 15 GPa at elevated temperatures. A combined structure analysis by s ...
DOI:
10.1021/ja507958z