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Radhakrishnan S, Lejaegere C, Duerinckx K, Lo WS, Morais AF, Dom D, Chandran CV, Hermans I, Martens JA, Breynaert E. Hydrogen bonding to oxygen in siloxane bonds drives liquid phase adsorption of primary alcohols in high-silica zeolites. Mater Horiz 2023; 10:3702-3711. [PMID: 37401863 PMCID: PMC10463557 DOI: 10.1039/d3mh00888f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 06/27/2023] [Indexed: 07/05/2023]
Abstract
Upon liquid phase adsorption of C1-C5 primary alcohols on high silica MFI zeolites (Si/Al = 11.5-140), the concentration of adsorbed molecules largely exceeds the concentration of traditional adsorption sites: Brønsted acid and defect sites. Combining quantitative in situ1H MAS NMR, qualitative multinuclear NMR and IR spectroscopy, hydrogen bonding of the alcohol function to oxygen atoms of the zeolite siloxane bridges (Si-O-Si) was shown to drive the additional adsorption. This mechanism co-exists with chemi- and physi-sorption on Brønsted acid and defect sites and does not exclude cooperative effects from dispersive interactions.
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Affiliation(s)
- Sambhu Radhakrishnan
- Centre for Surface Chemistry and Catalysis - Characterization and Application Team (COK-KAT), KU Leuven, Celestijnenlaan 200F Box 2461, 3001-Heverlee, Belgium.
- NMRCoRe - NMR/X-Ray platform for Convergence Research, KU Leuven, Celestijnenlaan 200F Box 2461, 3001-Heverlee, Belgium
| | - Charlotte Lejaegere
- Centre for Surface Chemistry and Catalysis - Characterization and Application Team (COK-KAT), KU Leuven, Celestijnenlaan 200F Box 2461, 3001-Heverlee, Belgium.
| | - Karel Duerinckx
- Centre for Surface Chemistry and Catalysis - Characterization and Application Team (COK-KAT), KU Leuven, Celestijnenlaan 200F Box 2461, 3001-Heverlee, Belgium.
- NMRCoRe - NMR/X-Ray platform for Convergence Research, KU Leuven, Celestijnenlaan 200F Box 2461, 3001-Heverlee, Belgium
| | - Wei-Shang Lo
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, USA
| | - Alysson F Morais
- Centre for Surface Chemistry and Catalysis - Characterization and Application Team (COK-KAT), KU Leuven, Celestijnenlaan 200F Box 2461, 3001-Heverlee, Belgium.
- NMRCoRe - NMR/X-Ray platform for Convergence Research, KU Leuven, Celestijnenlaan 200F Box 2461, 3001-Heverlee, Belgium
| | - Dirk Dom
- Centre for Surface Chemistry and Catalysis - Characterization and Application Team (COK-KAT), KU Leuven, Celestijnenlaan 200F Box 2461, 3001-Heverlee, Belgium.
- NMRCoRe - NMR/X-Ray platform for Convergence Research, KU Leuven, Celestijnenlaan 200F Box 2461, 3001-Heverlee, Belgium
| | - C Vinod Chandran
- Centre for Surface Chemistry and Catalysis - Characterization and Application Team (COK-KAT), KU Leuven, Celestijnenlaan 200F Box 2461, 3001-Heverlee, Belgium.
- NMRCoRe - NMR/X-Ray platform for Convergence Research, KU Leuven, Celestijnenlaan 200F Box 2461, 3001-Heverlee, Belgium
| | - Ive Hermans
- Centre for Surface Chemistry and Catalysis - Characterization and Application Team (COK-KAT), KU Leuven, Celestijnenlaan 200F Box 2461, 3001-Heverlee, Belgium.
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, USA
- Department of Chemical and Biological Engineering, Wisconsin Energy Institute, University of Wisconsin-Madison, 1552 University Ave, Madison, WI 53726, USA
| | - Johan A Martens
- Centre for Surface Chemistry and Catalysis - Characterization and Application Team (COK-KAT), KU Leuven, Celestijnenlaan 200F Box 2461, 3001-Heverlee, Belgium.
- NMRCoRe - NMR/X-Ray platform for Convergence Research, KU Leuven, Celestijnenlaan 200F Box 2461, 3001-Heverlee, Belgium
| | - Eric Breynaert
- Centre for Surface Chemistry and Catalysis - Characterization and Application Team (COK-KAT), KU Leuven, Celestijnenlaan 200F Box 2461, 3001-Heverlee, Belgium.
- NMRCoRe - NMR/X-Ray platform for Convergence Research, KU Leuven, Celestijnenlaan 200F Box 2461, 3001-Heverlee, Belgium
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Wang SC, Al Abdulghani A, Lebrón-Rodríguez E, Lo WS, Zhu H, Moini A, Petrovic I, Prasad S, Hermans I. Quantification of Exchanged Copper Species in Cu‐Chabazite Zeolite using Cryogenic Probe Infrared Spectroscopy. ChemCatChem 2022. [DOI: 10.1002/cctc.202200725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | | | | | - Wei-Shang Lo
- University of Wisconsin-Madison Chemistry UNITED STATES
| | - Haiyang Zhu
- BASF Corp Materials Characterization UNITED STATES
| | - Ahmad Moini
- BASF Corp Materials Characterization UNITED STATES
| | - Ivan Petrovic
- BASF Corp Analytics & Materials Characterization UNITED STATES
| | | | - Ive Hermans
- University of Wisconsin - Madison Department of Chemistry 1101 University Ave 53706 Madison UNITED STATES
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3
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Perras FA, Carnahan SL, Lo WS, Ward CJ, Yu J, Huang W, Rossini AJ. Hybrid quantum-classical simulations of magic angle spinning dynamic nuclear polarization in very large spin systems. J Chem Phys 2022; 156:124112. [DOI: 10.1063/5.0086530] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Solid-state nuclear magnetic resonance can be enhanced using unpaired electron spins with a method known as dynamic nuclear polarization (DNP). Fundamentally, DNP involves ensembles of thousands of spins, a scale that is difficult to match computationally. This scale prevents us from gaining a complete understanding of the spin dynamics and applying simulations to design sample formulations. We recently developed an ab initio model capable of calculating DNP enhancements in systems of up to ∼1000 nuclei; however, this scale is insufficient to accurately simulate the dependence of DNP enhancements on radical concentration or magic angle spinning (MAS) frequency. We build on this work by using ab initio simulations to train a hybrid model that makes use of a rate matrix to treat nuclear spin diffusion. We show that this model can reproduce the MAS rate and concentration dependence of DNP enhancements and build-up time constants. We then apply it to predict the DNP enhancements in core–shell metal-organic-framework nanoparticles and reveal new insights into the composition of the particles’ shells.
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Affiliation(s)
| | - Scott L. Carnahan
- Ames Laboratory, U.S. DOE, Ames, Iowa 50011, USA
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, USA
| | - Wei-Shang Lo
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, USA
| | - Charles J. Ward
- Ames Laboratory, U.S. DOE, Ames, Iowa 50011, USA
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, USA
| | - Jiaqi Yu
- Ames Laboratory, U.S. DOE, Ames, Iowa 50011, USA
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, USA
| | - Wenyu Huang
- Ames Laboratory, U.S. DOE, Ames, Iowa 50011, USA
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, USA
| | - Aaron J. Rossini
- Ames Laboratory, U.S. DOE, Ames, Iowa 50011, USA
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, USA
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4
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Williams BP, Lo WS, Morabito JV, Young AP, Tsung F, Kuo CH, Palomba JM, Rayder TM, Chou LY, Sneed BT, Liu XY, Lamontagne LK, Petroff CA, Brodsky CN, Yang J, Andoni I, Li Y, Zhang F, Li Z, Chen SY, Gallacher C, Li B, Tsung SY, Pu MH, Tsung CK. Tailoring Heterogeneous Catalysts at the Atomic Level: In Memoriam, Prof. Chia-Kuang (Frank) Tsung. ACS Appl Mater Interfaces 2021; 13:51809-51828. [PMID: 34310110 DOI: 10.1021/acsami.1c08916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Professor Chia-Kuang (Frank) Tsung made his scientific impact primarily through the atomic-level design of nanoscale materials for application in heterogeneous catalysis. He approached this challenge from two directions: above and below the material surface. Below the surface, Prof. Tsung synthesized finely controlled nanoparticles, primarily of noble metals and metal oxides, tailoring their composition and surface structure for efficient catalysis. Above the surface, he was among the first to leverage the tunability and stability of metal-organic frameworks (MOFs) to improve heterogeneous, molecular, and biocatalysts. This article, written by his former students, seeks first to commemorate Prof. Tsung's scientific accomplishments in three parts: (1) rationally designing nanocrystal surfaces to promote catalytic activity; (2) encapsulating nanocrystals in MOFs to improve catalyst selectivity; and (3) tuning the host-guest interaction between MOFs and guest molecules to inhibit catalyst degradation. The subsequent discussion focuses on building on the foundation laid by Prof. Tsung and on his considerable influence on his former group members and collaborators, both inside and outside of the lab.
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Affiliation(s)
- Benjamin P Williams
- Department of Chemistry, Merkert Chemistry Center, Boston College, 2609 Beacon Street, Chestnut Hill, Massachusetts 02467, United States
| | - Wei-Shang Lo
- Department of Chemistry, Merkert Chemistry Center, Boston College, 2609 Beacon Street, Chestnut Hill, Massachusetts 02467, United States
| | - Joseph V Morabito
- Department of Chemistry, Merkert Chemistry Center, Boston College, 2609 Beacon Street, Chestnut Hill, Massachusetts 02467, United States
| | - Allison P Young
- Department of Chemistry, Merkert Chemistry Center, Boston College, 2609 Beacon Street, Chestnut Hill, Massachusetts 02467, United States
| | - Frances Tsung
- Department of Chemistry, Merkert Chemistry Center, Boston College, 2609 Beacon Street, Chestnut Hill, Massachusetts 02467, United States
| | - Chun-Hong Kuo
- Institute of Chemistry, Academia Sinica, No. 128, Section 2, Academia Rd, Nangang District, Taipei City, Taiwan 115
| | - Joseph M Palomba
- U.S. Army DEVCOM Soldier Center, 10 General Greene Avenue, Natick, Massachusetts 01760, United States
| | - Thomas M Rayder
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
| | - Lien-Yang Chou
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, P. R. China
| | - Brian T Sneed
- CMC Materials, 870 North Commons Drive, Aurora, Illinois 60504, United States
| | - Xiao-Yuan Liu
- Hoffmann Institute of Advanced Materials, Shenzhen Polytechnic, 7098 Liuxian Boulevard, Nanshan District, Shenzhen 518055, P. R. China
| | - Leo K Lamontagne
- SecureSeniorConnections, 7114 East Stetson Drive, Scottsdale, Arizona 85251, United States
| | - Christopher A Petroff
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, United States
| | - Casey N Brodsky
- University of Michigan Medical School, 7300 Medical Sciences Building I-A Wing, 1301 Catherine Street, Ann Arbor, Michigan 48109, United States
| | - Jane Yang
- Department of Chemistry and Biochemistry, University of California Los Angeles, 607 Charles E. Young Drive East, Los Angeles, California 90095, United States
| | - Ilektra Andoni
- Department of Chemistry, University of California Irvine, 1102 Natural Sciences 2, Irvine, California 92697-2025, United States
| | - Yang Li
- Department of Chemistry, Merkert Chemistry Center, Boston College, 2609 Beacon Street, Chestnut Hill, Massachusetts 02467, United States
| | - Furui Zhang
- Department of Chemistry and the Institute for Catalysis in Energy Processes, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Zhehui Li
- Department of Chemistry, Merkert Chemistry Center, Boston College, 2609 Beacon Street, Chestnut Hill, Massachusetts 02467, United States
| | - Sheng-Yu Chen
- Institute of Chemistry, Academia Sinica, No. 128, Section 2, Academia Rd, Nangang District, Taipei City, Taiwan 115
| | - Connor Gallacher
- Department of Chemistry, Merkert Chemistry Center, Boston College, 2609 Beacon Street, Chestnut Hill, Massachusetts 02467, United States
| | - Banruo Li
- Department of Chemistry, Merkert Chemistry Center, Boston College, 2609 Beacon Street, Chestnut Hill, Massachusetts 02467, United States
| | - Sheng-Yuan Tsung
- Department of Chemistry, Merkert Chemistry Center, Boston College, 2609 Beacon Street, Chestnut Hill, Massachusetts 02467, United States
| | - Ming-Hwa Pu
- Department of Chemistry, Merkert Chemistry Center, Boston College, 2609 Beacon Street, Chestnut Hill, Massachusetts 02467, United States
| | - Chia-Kuang Tsung
- Department of Chemistry, Merkert Chemistry Center, Boston College, 2609 Beacon Street, Chestnut Hill, Massachusetts 02467, United States
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Li Y, Lo WS, Zhang F, Si X, Chou LY, Liu XY, Williams BP, Li YH, Jung SH, Hsu YS, Liao FS, Shieh FK, Ismail MN, Huang W, Tsung CK. Creating an Aligned Interface between Nanoparticles and MOFs by Concurrent Replacement of Capping Agents. J Am Chem Soc 2021; 143:5182-5190. [PMID: 33779171 DOI: 10.1021/jacs.1c01357] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Applying metal-organic frameworks (MOFs) on the surface of other materials to form multifunctional materials has recently attracted great attention; however, directing the MOF overgrowth is challenging due to the orders of magnitude differences in structural dimensions. In this work, we developed a universal strategy to mediate MOF growth on the surface of metal nanoparticles (NPs), by taking advantage of the dynamic nature of weakly adsorbed capping agents. During this colloidal process, the capping agents gradually dissociate from the metal surface, replaced in situ by the MOF. The MOF grows to generate a well-defined NP-MOF interface without a trapped capping agent, resulting in a uniform core-shell structure of one NP encapsulated in one single-crystalline MOF nanocrystal with specific facet alignment. The concept was demonstrated by coating ZIF-8 and UiO-66-type MOFs on shaped metal NPs capped by cetyltrimethylammonium surfactants, and the formation of the well-defined NP-MOF interface was monitored by spectroscopies. The defined interface outperforms ill-defined ones generated via conventional methods, displaying a high selectivity to unsaturated alcohols for the hydrogenation of an α,β-unsaturated aldehyde. This strategy opens a new route to create aligned interfaces between materials with vastly different structural dimensions.
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Affiliation(s)
- Yang Li
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Wei-Shang Lo
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Furui Zhang
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Xiaomeng Si
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Lien-Yang Chou
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Xiao-Yuan Liu
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Benjamin P Williams
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Yu-Hsiu Li
- Department of Chemistry, National Central University, Taoyuan 32001, Taiwan
| | - Seung-Hea Jung
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Yu-Shen Hsu
- Department of Chemistry, National Central University, Taoyuan 32001, Taiwan
| | - Fu-Siang Liao
- Department of Chemistry, National Central University, Taoyuan 32001, Taiwan
| | - Fa-Kuen Shieh
- Department of Chemistry, National Central University, Taoyuan 32001, Taiwan
| | - Mariam N Ismail
- Chemistry and Physics Department, Simmons University, Boston, Massachusetts 02116, United States
| | - Wenyu Huang
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Chia-Kuang Tsung
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
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Chen SY, Lo WS, Huang YD, Si X, Liao FS, Lin SW, Williams BP, Sun TQ, Lin HW, An Y, Sun T, Ma Y, Yang HC, Chou LY, Shieh FK, Tsung CK. Probing Interactions between Metal-Organic Frameworks and Freestanding Enzymes in a Hollow Structure. Nano Lett 2020; 20:6630-6635. [PMID: 32786948 DOI: 10.1021/acs.nanolett.0c02265] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
It has been reported that the biological functions of enzymes could be altered when they are encapsulated in metal-organic frameworks (MOFs) due to the interactions between them. Herein, we probed the interactions of catalase in solid and hollow ZIF-8 microcrystals. The solid sample with confined catalase is prepared through a reported method, and the hollow sample is generated by hollowing the MOF crystals, sealing freestanding enzymes in the central cavities of hollow ZIF-8. During the hollowing process, the samples were monitored by small-angle X-ray scattering (SAXS) spectroscopy, electron microscopy, powder X-ray diffraction (PXRD), and nitrogen sorption. The interfacial interactions of the two samples were studied by infrared (IR) and fluorescence spectroscopy. IR study shows that freestanding catalase has less chemical interaction with ZIF-8 than confined catalase, and a fluorescence study indicates that the freestanding catalase has lower structural confinement. We have then carried out the hydrogen peroxide degradation activities of catalase at different stages and revealed that the freestanding catalase in hollow ZIF-8 has higher activity.
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Affiliation(s)
- Sheng-Yu Chen
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Wei-Shang Lo
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Yi-Da Huang
- Department of Chemistry, National Central University, Taoyuan 32001, Taiwan
| | - Xiaomeng Si
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Fu-Siang Liao
- Department of Chemistry, National Central University, Taoyuan 32001, Taiwan
| | - Shang-Wei Lin
- Department of Chemistry, Fu Jen Catholic University, New Taipei City 24205, Taiwan
| | - Benjamin P Williams
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Ting-Qian Sun
- Department of Chemistry, National Central University, Taoyuan 32001, Taiwan
| | - Hao-Wei Lin
- Department of Chemistry, National Central University, Taoyuan 32001, Taiwan
| | - Yuanyuan An
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Tu Sun
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Yanhang Ma
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Hsiao-Ching Yang
- Department of Chemistry, Fu Jen Catholic University, New Taipei City 24205, Taiwan
| | - Lien-Yang Chou
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Fa-Kuen Shieh
- Department of Chemistry, National Central University, Taoyuan 32001, Taiwan
| | - Chia-Kuang Tsung
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
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Redfern LR, Lo WS, Dillingham IJ, Eatman JG, Mian MR, Tsung CK, Farha OK. Enhancing Four-Carbon Olefin Production from Acetylene over Copper Nanoparticles in Metal-Organic Frameworks. ACS Appl Mater Interfaces 2020; 12:31496-31502. [PMID: 32543827 DOI: 10.1021/acsami.0c08244] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Four-carbon olefins, such as 1-butene and 1,3-butadiene, are important chemical feedstocks for the production of adhesives and synthetic rubber. These compounds are found in the C4 fraction of "green oil" products that can arise during the hydrogenation of acetylene. Here, we demonstrate that control of the catalyst structure increases the yield and productivity of these important olefins with a family of catalyst materials comprising Cu nanoparticles (CuNPs) bound within the pores of Zr-based metal-organic frameworks. Using carbon monoxide as a probe molecule, we characterize the surfaces of these catalytic CuNPs with diffuse reflectance infrared Fourier transform spectroscopy, revealing that the electronic structure of the CuNP surfaces is size-dependent. Furthermore, we find that as the CuNP diameter decreases, the selectivity for C4 products increases and that lowering the stoichiometric ratio of H2/acetylene improves the selectivity and productivity of the catalyst.
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Affiliation(s)
- Louis R Redfern
- International Institute of Nanotechnology and Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Wei-Shang Lo
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Ian J Dillingham
- International Institute of Nanotechnology and Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Jamila G Eatman
- International Institute of Nanotechnology and Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Mohammad Rasel Mian
- International Institute of Nanotechnology and Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Chia-Kuang Tsung
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Omar K Farha
- International Institute of Nanotechnology and Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
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Lee HK, Koh CS, Lo WS, Liu Y, Phang IY, Sim HY, Lee YH, Phan-Quang GC, Han X, Tsung CK, Ling XY. Applying a Nanoparticle@MOF Interface To Activate an Unconventional Regioselectivity of an Inert Reaction at Ambient Conditions. J Am Chem Soc 2020; 142:11521-11527. [PMID: 32508093 DOI: 10.1021/jacs.0c04144] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Here we design an interface between a metal nanoparticle (NP) and a metal-organic framework (MOF) to activate an inert CO2 carboxylation reaction and in situ monitor its unconventional regioselectivity at the molecular level. Using a Kolbe-Schmitt reaction as model, our strategy exploits the NP@MOF interface to create a pseudo high-pressure CO2 microenvironment over the phenolic substrate to drive its direct C-H carboxylation at ambient conditions. Conversely, Kolbe-Schmitt reactions usually demand high reaction temperature (>125 °C) and pressure (>80 atm). Notably, we observe an unprecedented CO2 meta-carboxylation of an arene that was previously deemed impossible in traditional Kolbe-Schmitt reactions. While the phenolic substrate in this study is fixed at the NP@MOF interface to facilitate spectroscopic investigations, free reactants could be activated the same way by the local pressurized CO2 microenvironment. These valuable insights create enormous opportunities in diverse applications including synthetic chemistry, gas valorization, and greenhouse gas remediation.
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Affiliation(s)
- Hiang Kwee Lee
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Charlynn Sher Koh
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Wei-Shang Lo
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Yejing Liu
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - In Yee Phang
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Innovis, #08-03, Singapore 138634
| | - Howard Yi Sim
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Yih Hong Lee
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Gia Chuong Phan-Quang
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Xuemei Han
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Chia-Kuang Tsung
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Xing Yi Ling
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
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Williams BP, Yaguchi M, Lo WS, Kao CR, Lamontagne LK, Sneed BT, Brodsky CN, Chou LY, Kuo CH, Tsung CK. Investigating lattice strain impact on the alloyed surface of small Au@PdPt core-shell nanoparticles. Nanoscale 2020; 12:8687-8692. [PMID: 32267279 DOI: 10.1039/d0nr01021a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We investigated lattice strain on alloyed surfaces using ∼10 nm core-shell nanoparticles with controlled size, shape, and composition. We developed a wet-chemistry method for synthesizing small octahedral PdPt alloy nanoparticles and Au@PdPt core-shell nanoparticles with Pd-Pt alloy shells and Au cores. Upon introduction of the Au core, the size and shape of the overall nanostructure and the composition of the alloyed PdPt were maintained, enabling the use of the electrooxidation of formic acid as a probe to compare the surface structures with different lattice strain. We have found that the structure of the alloyed surface is indeed impacted by the lattice strain generated by the Au core. To further reveal the impact of lattice strain, we fine-tuned the shell thickness. Then, we used synchrotron-based X-ray diffraction to investigate the degree of lattice strain and compared the observations with the results of the formic acid electrooxidation, suggesting that there is an optimal intermediate shell thickness for high catalytic activity.
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Affiliation(s)
- Benjamin P Williams
- Department of Chemistry, Merkert Chemistry Center, Boston College, 2609 Beacon Street, Chestnut Hill, Massachusetts 02467, USA.
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Liu XY, Lo WS, Wu C, Williams BP, Luo L, Li Y, Chou LY, Lee Y, Tsung CK. Tuning Metal-Organic Framework Nanocrystal Shape through Facet-Dependent Coordination. Nano Lett 2020; 20:1774-1780. [PMID: 31995389 DOI: 10.1021/acs.nanolett.9b04997] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We studied coordination-dependent surfactant binding on shaped MOF nanocrystals. Cetyltrimethylammonium bromide (CTAB) on the surface of ZIF-8 was used as a model system. Infrared spectroscopic analysis and molecular dynamics simulations reveal different coordination environments for Zn nodes on {100} and {110} facets, resulting in different CTAB adsorption. We found that we are able to fine-tune the ratio of {100} and {110} facets in the nanocrystals. We also observed that once the MOF nanocrystals are enclosed by pure {110} facets growth along the {100} facets is terminated because the MOF nanocrystal has no surface area for CTAB adsorption. Growth can then be reinitiated through the etching of these rhombic dodecahedral nanocrystals to form a small amount of undercoordinated sites. This work represents the first systematic study of the design principles underpinning the synthesis of shaped MOF nanocrystals.
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Affiliation(s)
- Xiao-Yuan Liu
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Wei-Shang Lo
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Chunhui Wu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, P. R. China
| | - Benjamin P Williams
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Lianshun Luo
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, P. R. China
| | - Yang Li
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Lien-Yang Chou
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, P. R. China
| | - Yongjin Lee
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, P. R. China
| | - Chia-Kuang Tsung
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
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11
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Luo L, Lo WS, Si X, Li H, Wu Y, An Y, Zhu Q, Chou LY, Li T, Tsung CK. Directional Engraving within Single Crystalline Metal–Organic Framework Particles via Oxidative Linker Cleaving. J Am Chem Soc 2019; 141:20365-20370. [DOI: 10.1021/jacs.9b10499] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Lianshun Luo
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Wei-Shang Lo
- Department of Chemistry, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Xiaomeng Si
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Hailong Li
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Yichen Wu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Yuanyuan An
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Qinlin Zhu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Lien-Yang Chou
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Tao Li
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Chia-Kuang Tsung
- Department of Chemistry, Boston College, Chestnut Hill, Massachusetts 02467, United States
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12
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Wu C, Chou LY, Long L, Si X, Lo WS, Tsung CK, Li T. Structural Control of Uniform MOF-74 Microcrystals for the Study of Adsorption Kinetics. ACS Appl Mater Interfaces 2019; 11:35820-35826. [PMID: 31502435 DOI: 10.1021/acsami.9b13965] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Metal-organic frameworks (MOFs) is a promising class of sorbent materials for swing adsorption gas separation. However, although sorption kinetics plays a major role in column breakthrough experiments, it is rarely studied with MOF materials. This is largely because the synthesis of uniform yet separation-relevant MOFs is a challenging task. Here, we report a dual-modulation approach for the synthesis of well-defined Mg-MOF-74 hexagonal rods with an extremely uniform size distribution (polydispersity index = 1.02). Through epitaxial growth and wet chemical etching, uniform hollow Ni-MOF-74 with plate-shaped caps were obtained. CO2 adsorption kinetic study shows that hollow Ni-MOF-74 exhibits 54% faster diffusion rate compared to solid Ni-MOF-74 due to a shortened diffusion length, despite their identical CO2 uptake capacity. This has led to a 21% extension of column breakthrough time during CO2/N2 separation under identical conditions.
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Affiliation(s)
- Chunhui Wu
- School of Physical Science and Technology , ShanghaiTech University , Shanghai 201210 , China
| | - Lien-Yang Chou
- School of Physical Science and Technology , ShanghaiTech University , Shanghai 201210 , China
| | - Liuliu Long
- School of Physical Science and Technology , ShanghaiTech University , Shanghai 201210 , China
| | - Xiaomeng Si
- School of Physical Science and Technology , ShanghaiTech University , Shanghai 201210 , China
| | - Wei-Shang Lo
- School of Physical Science and Technology , ShanghaiTech University , Shanghai 201210 , China
| | - Chia-Kuang Tsung
- Department of Chemistry, Merkert Chemistry Center , Boston College , Chestnut Hill , Massachusetts 02467 , United States
| | - Tao Li
- School of Physical Science and Technology , ShanghaiTech University , Shanghai 201210 , China
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13
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Luo J, Li Y, Zhang H, Wang A, Lo WS, Dong Q, Wong N, Povinelli C, Shao Y, Chereddy S, Wunder S, Mohanty U, Tsung CK, Wang D. A Metal-Organic Framework Thin Film for Selective Mg 2+ Transport. Angew Chem Int Ed Engl 2019; 58:15313-15317. [PMID: 31478284 DOI: 10.1002/anie.201908706] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Indexed: 01/12/2023]
Abstract
The incompatibility between the anode and the cathode chemistry limits the used of Mg as an anode. This issue may be addressed by separating the anolyte and the catholyte with a membrane that only allows for Mg2+ transport. Mg-MOF-74 thin films were used as the separator for this purpose. It was shown to meet the needs of low-resistance, selective Mg2+ transport. The uniform MOF thin films supported on Au substrate with thicknesses down to ca. 202 nm showed an intrinsic resistance as low as 6.4 Ω cm2 , with the normalized room-temperature ionic conductivity of ca. 3.17×10-6 S cm-1 . When synthesized directly onto a porous anodized aluminum oxide (AAO) support, the resulting films were used as a standalone membrane to permit stable, low-overpotential Mg striping and plating for over 100 cycles at a current density of 0.05 mA cm-2 . The film was effective in blocking solvent molecules and counterions from crossing over for extended period of time.
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Affiliation(s)
- Jingru Luo
- Department of Chemistry, Boston College, Merkert Chemistry Center, 2609 Beacon St., Chestnut Hill, MA, 02467, USA
| | - Yang Li
- Department of Chemistry, Boston College, Merkert Chemistry Center, 2609 Beacon St., Chestnut Hill, MA, 02467, USA
| | - Haochuan Zhang
- Department of Chemistry, Boston College, Merkert Chemistry Center, 2609 Beacon St., Chestnut Hill, MA, 02467, USA
| | - Ailun Wang
- Department of Chemistry, Boston College, Merkert Chemistry Center, 2609 Beacon St., Chestnut Hill, MA, 02467, USA
| | - Wei-Shang Lo
- Department of Chemistry, Boston College, Merkert Chemistry Center, 2609 Beacon St., Chestnut Hill, MA, 02467, USA
| | - Qi Dong
- Department of Chemistry, Boston College, Merkert Chemistry Center, 2609 Beacon St., Chestnut Hill, MA, 02467, USA
| | - Nicholas Wong
- Department of Chemistry, Boston College, Merkert Chemistry Center, 2609 Beacon St., Chestnut Hill, MA, 02467, USA
| | - Christopher Povinelli
- Department of Chemistry, Boston College, Merkert Chemistry Center, 2609 Beacon St., Chestnut Hill, MA, 02467, USA
| | - Yucai Shao
- Department of Chemistry, Boston College, Merkert Chemistry Center, 2609 Beacon St., Chestnut Hill, MA, 02467, USA
| | - Sumanth Chereddy
- Department of Chemistry, Temple University, Philadelphia, PA, 19122, USA
| | - Stephanie Wunder
- Department of Chemistry, Temple University, Philadelphia, PA, 19122, USA
| | - Udayan Mohanty
- Department of Chemistry, Boston College, Merkert Chemistry Center, 2609 Beacon St., Chestnut Hill, MA, 02467, USA
| | - Chia-Kuang Tsung
- Department of Chemistry, Boston College, Merkert Chemistry Center, 2609 Beacon St., Chestnut Hill, MA, 02467, USA
| | - Dunwei Wang
- Department of Chemistry, Boston College, Merkert Chemistry Center, 2609 Beacon St., Chestnut Hill, MA, 02467, USA
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Ho DSY, Huang R, Wang MP, Lo WS, Lam TH. Adolescent alcohol drinking in Hong Kong: a school-based survey. Hong Kong Med J 2019; 25 Suppl 3:13-15. [PMID: 30792366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023] Open
Affiliation(s)
- D S Y Ho
- School of Public Health, The University of Hong Kong
| | - R Huang
- School of Public Health, The University of Hong Kong
| | - M P Wang
- School of Nursing, The University of Hong Kong
| | - W S Lo
- School of Public Health, The University of Hong Kong
| | - T H Lam
- School of Public Health, The University of Hong Kong
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15
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Liao FS, Lo WS, Hsu YS, Wu CC, Wang SC, Shieh FK, Morabito JV, Chou LY, Wu KCW, Tsung CK. Shielding against Unfolding by Embedding Enzymes in Metal-Organic Frameworks via a de Novo Approach. J Am Chem Soc 2017; 139:6530-6533. [PMID: 28460166 DOI: 10.1021/jacs.7b01794] [Citation(s) in RCA: 221] [Impact Index Per Article: 31.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
We show that an enzyme maintains its biological function under a wider range of conditions after being embedded in metal-organic framework (MOF) microcrystals via a de novo approach. This enhanced stability arises from confinement of the enzyme molecules in the mesoporous cavities in the MOFs, which reduces the structural mobility of enzyme molecules. We embedded catalase (CAT) into zeolitic imidazolate frameworks (ZIF-90 and ZIF-8), and then exposed both embedded CAT and free CAT to a denature reagent (i.e., urea) and high temperatures (i.e., 80 °C). The embedded CAT maintains its biological function in the decomposition of hydrogen peroxide even when exposed to 6 M urea and 80 °C, with apparent rate constants kobs (s-1) of 1.30 × 10-3 and 1.05 × 10-3, respectively, while free CAT shows undetectable activity. A fluorescence spectroscopy study shows that the structural conformation of the embedded CAT changes less under these denaturing conditions than free CAT.
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Affiliation(s)
- Fu-Siang Liao
- School of Physical Science and Technology, ShanghaiTech University , Shanghai 201210, China.,Department of Chemistry, National Central University , Taoyuan 32001, Taiwan
| | - Wei-Shang Lo
- Department of Chemistry, National Central University , Taoyuan 32001, Taiwan
| | - Yu-Shen Hsu
- Department of Chemistry, National Central University , Taoyuan 32001, Taiwan
| | - Chang-Cheng Wu
- Department of Chemistry, National Central University , Taoyuan 32001, Taiwan
| | - Shao-Chun Wang
- Department of Chemistry, National Central University , Taoyuan 32001, Taiwan
| | - Fa-Kuen Shieh
- Department of Chemistry, National Central University , Taoyuan 32001, Taiwan
| | - Joseph V Morabito
- Department of Chemistry, Merkert Chemistry Center, Boston College , Chestnut Hill, Massachusetts 02467, United States
| | - Lien-Yang Chou
- School of Physical Science and Technology, ShanghaiTech University , Shanghai 201210, China
| | - Kevin C-W Wu
- Department of Chemical Engineering, National Taiwan University , Taipei 10617, Taiwan
| | - Chia-Kuang Tsung
- Department of Chemistry, Merkert Chemistry Center, Boston College , Chestnut Hill, Massachusetts 02467, United States
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16
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Chuc LT, Chen CS, Lo WS, Shen PC, Hsuan YC, Tsai HHG, Shieh FK, Hou DR. Long-Range Olefin Isomerization Catalyzed by Palladium(0) Nanoparticles. ACS Omega 2017; 2:698-711. [PMID: 31457465 PMCID: PMC6640945 DOI: 10.1021/acsomega.6b00509] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Accepted: 02/14/2017] [Indexed: 06/10/2023]
Abstract
Long-range olefin isomerization of 2-alkenylbenzoic acid derivatives going through two to five sp3-carbon atoms to give (E)-alkenes was achieved with palladium(0) nanoparticles. The substrate scope of this reaction includes carboxylic acid, ester, and primary to tertiary amides and tolerates various substituents on the benzene ring. This isomerization reaction was catalyzed by recyclable Pd(0) nanoparticles, prepared in situ from PdCl2 and characterized by X-ray powder diffraction and scanning electron microscopy analyses. 1H NMR studies and kinetic modeling supported a stepwise process. This new process was applied to synthesize a natural dihydroisocoumarin with good efficiency.
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17
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Huang YH, Lo WS, Kuo YW, Chen WJ, Lin CH, Shieh FK. Green and rapid synthesis of zirconium metal–organic frameworks via mechanochemistry: UiO-66 analog nanocrystals obtained in one hundred seconds. Chem Commun (Camb) 2017; 53:5818-5821. [DOI: 10.1039/c7cc03105j] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A UiO-66 analog was synthesized in 100 s via water-assisted grinding by the evaluation of linker solubility effects.
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Affiliation(s)
- Yi-Hao Huang
- Department of Chemistry
- National Central University
- Chung Li
- Taiwan
| | - Wei-Shang Lo
- Department of Chemistry
- National Central University
- Chung Li
- Taiwan
| | - Yun-Wei Kuo
- Department of Chemistry
- National Central University
- Chung Li
- Taiwan
| | - Wen-Jin Chen
- Department of Chemistry
- Chung Yuan Christian University
- Chung Li
- Taiwan
| | - Chia-Her Lin
- Department of Chemistry
- Chung Yuan Christian University
- Chung Li
- Taiwan
| | - Fa-Kuen Shieh
- Department of Chemistry
- National Central University
- Chung Li
- Taiwan
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18
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Huang R, Ho SY, Wang MP, Lo WS, Lam TH. Reported alcohol drinking and mental health problems in Hong Kong Chinese adolescents. Drug Alcohol Depend 2016; 164:47-54. [PMID: 27177803 DOI: 10.1016/j.drugalcdep.2016.04.028] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Revised: 04/15/2016] [Accepted: 04/16/2016] [Indexed: 12/01/2022]
Abstract
OBJECTIVE To investigate the association between reported alcohol drinking and mental health problems in Hong Kong adolescents. METHODS In a school-based questionnaire survey in 2012-13 on 4620 Secondary one (US Grade seven) to six students (mean age 14.5, SD 1.6 years; 53.4% boys), alcohol drinking was classified as never drinking (reference), experimental, former, less-than-weekly and weekly drinking. Binge drinking was defined as drinking at least five drinks on one occasion. Mental health was assessed using the Strengths and Difficulties Questionnaire (SDQ) with five subscales (emotional symptoms, conduct problems, hyperactivity, peer relationship problems and prosocial activity) and the total difficulties score (sum of the first four subscales). Multilevel regression was used to analyse the associations of mental health problems with drinking frequency and binge drinking, adjusting for potential confounders. RESULTS Compared with never drinking, higher total difficulties scores were associated with less-than-weekly drinking (adjusted odds ratio AOR 1.39, 95% CI 1.01-1.91), weekly drinking (AOR 3.21, 95% CI 2.18-4.70), and binge drinking (AOR 2.18, 95% CI 1.42-3.32). Weekly drinking was most strongly associated with hyperactivity (AOR 6.27, 95% CI 1.42-3.32) among all subscales. Girls were more likely than boys to report emotional problems (AOR 3.36 vs 1.47) and hyperactivity (AOR 19.2 vs 2.31) related to weekly alcohol drinking (both P for interaction <0.05). CONCLUSIONS In Hong Kong adolescents, less-than-weekly, weekly, and binge drinking are associated with higher risks of mental health problems based on self-reported data. Prospective studies are warranted to explore the causality between alcohol drinking and mental health problems.
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Affiliation(s)
- R Huang
- Zhejiang Medical College, Hangzhou, China; School of Public Health, The University of Hong Kong, Hong Kong
| | - S Y Ho
- School of Public Health, The University of Hong Kong, Hong Kong.
| | - M P Wang
- School of Nursing, The University of Hong Kong, Hong Kong
| | - W S Lo
- School of Public Health, The University of Hong Kong, Hong Kong
| | - T H Lam
- School of Public Health, The University of Hong Kong, Hong Kong
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Yen CI, Liu SM, Lo WS, Wu JW, Liu YH, Chein RJ, Yang R, Wu KCW, Hwu JR, Ma N, Shieh FK. Cytotoxicity of Postmodified Zeolitic Imidazolate Framework-90 (ZIF-90) Nanocrystals: Correlation between Functionality and Toxicity. Chemistry 2016; 22:2925-9. [DOI: 10.1002/chem.201505005] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Indexed: 12/11/2022]
Affiliation(s)
- Chia-I Yen
- Department of Chemistry; National Central University; Taoyuan 32001 Taiwan
| | - Szu-Mam Liu
- Department of Biomedical Sciences and Engineering; Institute of Systems Biology and Bioinformatics; National Central University; Taoyuan 32001 Taiwan
| | - Wei-Shang Lo
- Department of Chemistry; National Central University; Taoyuan 32001 Taiwan
| | - Jhe-Wei Wu
- Department of Chemistry; National Central University; Taoyuan 32001 Taiwan
| | - Yi-Hsin Liu
- Department of Chemistry; National Central University; Taoyuan 32001 Taiwan
| | - Rong-Jie Chein
- Institute of Chemistry; Academia Sinica, Nankang; Taipei 11529 Taiwan
| | - Renqiang Yang
- CAS Key Laboratory of Bio-based Materials; Qingdao Institute of Bioenergy and Bioprocess Technology; Chinese Academy of Sciences; Qingdao 266101 P. R. China
| | - Kevin C.-W. Wu
- Department of Chemical Engineering; National Taiwan University; Taipei 10617 Taiwan
| | - Jih Ru Hwu
- Department of Chemistry & Frontier Research Center on Fundamental and Applied Sciences of Matters; National Tsing Hua University; Hsinchu 30013 Taiwan
| | - Nianhan Ma
- Department of Biomedical Sciences and Engineering; Institute of Systems Biology and Bioinformatics; National Central University; Taoyuan 32001 Taiwan
| | - Fa-Kuen Shieh
- Department of Chemistry; National Central University; Taoyuan 32001 Taiwan
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Lo WS, Liu SM, Wang SC, Lin HP, Ma N, Huang HY, Shieh FK. A green and facile approach to obtain 100 nm zeolitic imidazolate framework-90 (ZIF-90) particles via leveraging viscosity effects. RSC Adv 2014. [DOI: 10.1039/c4ra10488a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
100 nm ZIF-90 nanoparticles with low cytotoxicity are obtained by utilizing glycerol for the control of viscosity effects in water–alcohol-based system.
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Affiliation(s)
- Wei-Shang Lo
- Department of Chemistry
- National Central University
- Chung-Li 32001, Taiwan
| | - Szu-Mam Liu
- Institute of Systems Biology and Bioinformatics
- National Central University
- Chung-Li 32001, Taiwan
| | - Shao-Chun Wang
- Department of Chemistry
- National Central University
- Chung-Li 32001, Taiwan
| | - Hsiu-Pen Lin
- Department of Chemistry
- National Central University
- Chung-Li 32001, Taiwan
| | - Nianhan Ma
- Institute of Systems Biology and Bioinformatics
- National Central University
- Chung-Li 32001, Taiwan
| | - Hsi-Ya Huang
- Department of Chemistry
- Chung Yuan Christian University
- Chung-Li, Taiwan
| | - Fa-Kuen Shieh
- Department of Chemistry
- National Central University
- Chung-Li 32001, Taiwan
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Ho SY, Lai YK, Lam TH, Chan V, Mak KK, Lo WS. Risk factors and outcomes of childhood obesity in Hong Kong: a retrospective cohort study. Hong Kong Med J 2013; 19 Suppl 4:45-47. [PMID: 23775188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023] Open
Abstract
1. Onset of obesity is related to age, gender, pubertal stage, dietary habits, and parental occupation. Targeting the high riskgroups may help curb obesity in children. 2. Obesity may lead to poor self-esteem and potential psychosocial risk. The psychosocial impact of obesity could be more pronounced in girls than boys. 3. The association between obesity and psychosocial health could be bi-directional. Improving psychosocial health could be beneficial in weight management for normal-weight and obese children. 4. Obesity is associated with higher blood pressures.
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Affiliation(s)
- S Y Ho
- School of Public Health, The University of Hong Kong, 21 Sassoon Road,Pokfulam, Hong Kong SAR, China.
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Ueng YF, Chen CC, Yamazaki H, Kiyotani K, Chang YP, Lo WS, Li DT, Tsai PL. Mechanism-based inhibition of CYP1A1 and CYP3A4 by the furanocoumarin chalepensin. Drug Metab Pharmacokinet 2012; 28:229-38. [PMID: 23257392 DOI: 10.2133/dmpk.dmpk-12-rg-113] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The cytochrome P450 (P450, CYP) 2A6 inhibitor chalepensin was found to inhibit human CYP1A1, CYP1A2, CYP2A13, CYP2C9, CYP2D6, CYP2E1, and CYP3A4 to different extents. CYP1A1 and CYP3A4 underwent pronounced mechanism-based inactivation by chalepensin and had the smallest IC50 ratios of inhibition with NADPH-fortified pre-incubation (IC50(+)) to that without pre-incubation (IC50(-)). CYP2E1 had the least susceptibility to mechanism-based inactivation. This inactivation of CYP1A1 and CYP3A4 exhibited time-dependence, led to a loss of spectrophotometrically detected P450, and could not be fully recovered by dialysis. Pre-incubation with chalepensin did not affect NADPH-P450 reductase activity. Cytosol-supported glutathione conjugation protected CYP3A4 but not CYP1A1 against the inactivation by chalepensin. Cytosolic decomposition of chalepensin may contribute partially to the protection. The high epoxidation activities of CYP1A1, CYP2A6, and CYP3A4 were in agreement with their pronounced susceptibilities to mechanism-based inactivation by chalepensin. Considering both the IC50 values and inactivation kinetic parameters, the threshold concentrations of chalepensin for potential drug interactions through inhibition of CYP2A6 and CYP3A4 were estimated to be consistently low. These results demonstrate that chalepensin inhibits multiple P450s and that epoxidation activity is crucial for the potential drug interaction through mechanism-based inhibition.
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Affiliation(s)
- Yune-Fang Ueng
- Laboratory of Drug Metabolism, National Research Institute of Chinese Medicine, Taipei, Taiwan, ROC.
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Cheung BMY, Au THY, Chan SY, Lam CM, Lau SH, Lee RP, Lee SF, Lo WS, Sin EHF, Tang MY, Tsang HH. The relationship between hypertension and anxiety or depression in Hong Kong Chinese. Exp Clin Cardiol 2005; 10:21-24. [PMID: 19641663 PMCID: PMC2716224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
BACKGROUND Psychosocial stress can be the cause or the consequence of hypertension. OBJECTIVE To study the association between hypertension and anxiety or depression in adults from Hong Kong, China. SUBJECTS AND METHODS Patients with diagnosed hypertension (n=197) were recruited to complete the Hospital Anxiety and Depression Scale (HADS) questionnaire. The control group comprised 182 normotensive subjects recruited using random telephone numbers. RESULTS The score in the anxiety subscale (HADS-A) of the HADS correlated with age (r= -0.23, P<0.001) and sex (r=0.11, P=0.042), and was found to be higher in women. The score in the depression subscale (HADS-D) correlated with age (r=0.17, P=0.003) and hypertension (r=0.12, P=0.039), but not with sex (r=0.02, P=0.68). When the control subjects were matched for sex and age with the subjects with hypertension, the mean HADS-A score was 5.51+/-0.41 in 113 hypertensive subjects and 4.38+/-0.39 in 113 normotensive subjects (P=0.047). The mean HADS-D score was 5.56+/-0.39 in the hypertensive and 4.76+/-0.32 in the normotensive subjects (P=0.11). Multiple regression analysis using data from both groups indicated that the HADS-A score was related to the HADS-D score (beta=0.49, P<0.001), age (beta= -0.25, P<0.001) and sex (beta=0.12, P=0.01) (R(2)=0.28), whereas the HADS-D score was related to the HADS-A score (beta=0.48, P<0.001), age (beta=0.30, P<0.001), positive smoking status (beta=0.13, P=0.004) and lack of exercise habit (beta=0.12, P=0.008) (R(2)=0.31). Hypertension was related to waist circumference, history of parental hypertension and age (R(2)=0.38, P<0.001). Anxiety and depression scores were rejected as independent variables. CONCLUSIONS Hypertension was associated with anxiety but not depression; however, age, history of parental hypertension and central obesity appeared to have a stronger association with hypertension in adults from Hong Kong.
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Affiliation(s)
- Bernard MY Cheung
- Correspondence: Dr Bernard MY Cheung, University Department of Medicine, Queen Mary Hospital, Hong Kong, China. Telephone 852-2-855-4768, fax 852-2-904-9443, e-mail
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Lo WS, Duggan L, Emre NC, Belotserkovskya R, Lane WS, Shiekhattar R, Berger SL. Snf1--a histone kinase that works in concert with the histone acetyltransferase Gcn5 to regulate transcription. Science 2001; 293:1142-6. [PMID: 11498592 DOI: 10.1126/science.1062322] [Citation(s) in RCA: 300] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Modification of histones is an important element in the regulation of gene expression. Previous work suggested a link between acetylation and phosphorylation, but questioned its mechanistic basis. We have purified a histone H3 serine-10 kinase complex from Saccharomyces cerevisiae and have identified its catalytic subunit as Snf1. The Snf1/AMPK family of kinases function in conserved signal transduction pathways. Our results show that Snf1 and the acetyltransferase Gcn5 function in an obligate sequence to enhance INO1 transcription by modifying histone H3 serine-10 and lysine-14. Thus, phosphorylation and acetylation are targeted to the same histone by promoter-specific regulation by a kinase/acetyltransferase pair, supporting models of gene regulation wherein transcription is controlled by coordinated patterns of histone modification.
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Affiliation(s)
- W S Lo
- Molecular Genetics Program, The Wistar Institute, Philadelphia, PA 19104, USA
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Lo WS, Trievel RC, Rojas JR, Duggan L, Hsu JY, Allis CD, Marmorstein R, Berger SL. Phosphorylation of serine 10 in histone H3 is functionally linked in vitro and in vivo to Gcn5-mediated acetylation at lysine 14. Mol Cell 2000; 5:917-26. [PMID: 10911986 DOI: 10.1016/s1097-2765(00)80257-9] [Citation(s) in RCA: 439] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Multiple covalent modifications exist in the amino-terminal tails of core histones, but whether a relationship exists between them is unknown. We examined the relationship between serine 10 phosphorylation and lysine 14 acetylation in histone H3 and have found that, in vitro, several HAT enzymes displayed increased activity on H3 peptides bearing phospho-Ser-10. This augmenting effect of Ser-10 phosphorylation on acetylation by yGcn5 was lost by substitution of alanine for arginine 164 [Gcn5(R164A)], a residue close to Ser-10 in the structure of the ternary tGcn5/CoA/histone H3 complex. Gcn5(R164A) had reduced activity in vivo at a subset of Gcn5-dependent promoters, and, strikingly, transcription of this same subset of genes was also impaired by substitution of serine 10 to alanine in the histone H3 tail. These observations suggest that transcriptional regulation occurs by multiple mechanistically linked covalent modifications of histones.
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Affiliation(s)
- W S Lo
- Molecular Genetics Program, Wistar Institute, Philadelphia, Pennsylvania 19024, USA
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Abstract
Diploid yeast develop pseudohyphae in response to nitrogen starvation, while haploid yeast produce invasive filaments which penetrate the agar in rich medium. We have identified a gene, FLO11, that encodes a cell wall protein which is critically required for both invasion and pseudohyphae formation in response to nitrogen starvation. FLO11 encodes a cell surface flocculin with a structure similar to the class of yeast serine/threonine-rich GPI-anchored cell wall proteins. Cells of the Saccharomyces cerevisiae strain Sigma1278b with deletions of FLO11 do not form pseudohyphae as diploids nor invade agar as haploids. In rich media, FLO11 is regulated by mating type; it is expressed in haploid cells but not in diploids. Upon transfer to nitrogen starvation media, however, FLO11 transcripts accumulate in diploid cells, but not in haploids. Overexpression of FLO11 in diploid cells, which are otherwise not invasive, enables them to invade agar. Thus, the mating type repression of FLO11 in diploids grown in rich media suffices to explain the inability of these cells to invade. The promoter of FLO11 contains a consensus binding sequence for Ste12p and Tec1p, proteins known to cooperatively activate transcription of Ty1 elements and the TEC1 gene during development of pseudohyphae. Yeast with a deletion of STE12 does not express FLO11 transcripts, indicating that STE12 is required for FLO11 expression. These ste12-deletion strains also do not invade agar. However, the ability to invade can be restored by overexpressing FLO11. Activation of FLO11 may thus be the primary means by which Ste12p and Tec1p cause invasive growth.
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Affiliation(s)
- W S Lo
- Department of Biological Sciences, St. John's University, Jamaica, New York 11439, USA
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Abstract
Diploid strains of S. cerevisiae are known to develop pseudohyphae in response to starvation for nitrogen. We report that both haploid and diploid yeast grow in a filamentous form when embedded in solid media. This is not a response to starvation, since yeast grown on rich media and overlaid with rich agar grow within the agar as pseudohyphae. While we find that the only element of diploidy required for formation of pseudohyphae in response to nitrogen starvation is the a1/alpha 2 repressor, pseudohyphal development by embedded cells does not require a1/alpha 2. Deletion of BUD 5 prevented the formation of pseudohyphae by embedded cells, suggesting that these structures are the result of ordered filament formation rather than agar penetration. Deletion of STE 12 prevented the formation of pseudohyphae by all cell types, showing that the same signal transduction pathway is used by embedded cells as by those responding to nitrogen starvation. Different cell types of yeast thus form filaments in response to several kinds of environmental stimuli.
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Affiliation(s)
- W S Lo
- Department of Biological Sciences, St. John's University, Jamaica, New York 11439, USA
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Abstract
We report the characterization of a gene encoding a novel flocculin related to the STA genes of yeast, which encode secreted glucoamylase. The STA genes comprise sequences that are homologous to the sporulation-specific glucoamylase SGA and to two other sequences, S2 and S1. We find that S2 and S1 are part of a single gene which we have named FLO11. The sequence of FLO11 reveals a 4,104-bp open reading frame on chromosome IX whose predicted product is similar in overall structure to the class of yeast serine/threonine-rich GPI-anchored cell wall proteins. An amino-terminal domain containing a signal sequence and a carboxy-terminal domain with homology to GPI (glycosyl-phosphatidyl-inositol) anchor-containing proteins are separated by a central domain containing a highly repeated threonine- and serine-rich sequence. Yeast cells that express FLO11 aggregate in the calcium-dependent process of flocculation. Flocculation is abolished when FLO11 is disrupted. The product of STA1 also is shown to have flocculating activity. When a green fluorescent protein fusion of FLO11 was expressed from the FLO11 promoter on a single-copy plasmid, fluorescence was observed in vivo at the periphery of cells. We propose that FLO11 encodes a flocculin because of its demonstrated role in flocculation, its structural similarity to other members of the FLO gene family, and the cell surface location of its product. FLO11 gene sequences are present in all yeast strains tested, including all standard laboratory strains, unlike the STA genes which are present only in the variant strain Saccharomyces cerevisiae var. diastaticus. FLO11 differs from all other yeast flocculins in that it is located near a centromere rather than a telomere, and its expression is regulated by mating type. Repression of FLO11-dependent flocculation in diploids is conferred by the mating-type repressor al/alpha2.
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Affiliation(s)
- W S Lo
- Department of Biological Sciences, St. John's University, Jamaica, New York 11439, USA
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Abstract
Four alpha-amylase-encoding cDNA (alpha Amy-C) clones were isolated from a cDNA library derived from poly(A)+RNA of gibberellic acid (GA3)-treated rice aleurone layers. Nucleotide sequence analysis indicates that the four cDNAs were derived from different alpha Amy genes. Expression of the individual alpha Amy gene in germinating seeds and cultured suspension cells of rice was studied using gene-specific probes. In germinating seeds, expression of the alpha Amy genes is positively regulated by GA3 in a temporally coordinated but quantitatively distinct manner. In cultured suspension cells, in contrast, expression of the alpha Amy genes is negatively and differentially regulated by sugars present in the medium. In addition, one strong and one weak carbohydrate-starvation-responsive alpha Amy genes have been identified. Interactions between the promoter region (HS501) of a rice alpha Amy gene and GA3-inducible DNA binding proteins in rice aleurone cells were also studied. A DNA mobility-shift assay showed that the aleurone proteins interact with two specific DNA fragments within HS501. One fragment is located between nt -131 to -170 and contains two imperfect directly repeated pyrimidine elements and a putative GA3-response element. The other fragment is located between nt -92 to -130 that contains a putative enhancer sequence. The interactions between aleurone proteins and these two fragments are sequence-specific and GA-responsive.
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Affiliation(s)
- S M Yu
- Institute of Molecular Biology, Academia Sinica, Nankang, Taipei, Taiwan, Republic of China
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Liu WJ, Lo WS, Hsieh HJ, Huang TY, Chiang CH. Increased incidence of asthma and pulmonary dysfunction after severe lower respiratory tract infection in infancy. Zhonghua Min Guo Xiao Er Ke Yi Xue Hui Za Zhi 1991; 32:348-57. [PMID: 1823511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
In the present study we tried to define the effect of lower respiratory tract infections upon pulmonary function and/or asthma in childhood. Thirty-five children with history of pneumonia in infancy were followed five to ten years later; all were asked to respond questionnaire, received physical examination and were diagnosed for pulmonary function. The results follow: 13 children (37%) had developed asthma, a significantly higher percentage than normal prevalence among students in this area. Simple pulmonary function test, pulmonary function test after distilled water mist and after hypertonic saline (4.5%) mist all showed abnormal values in VC (17%, 14%, 29% respectively), in IVC (46%, 51%, 53%), in FVC (20%, 23%, 24%), in FEVl (17%, 23%, 29%), in FEF25-75% (37%, 49%, 47%), in FEF75% (26%, 23%, 29%) and in FEVl/VC (20%, 14%, 29%). Methacholine challenge test (PC20) showed a marked decrease of PC20 in asthmatic children; each was less than 5 mg/ml (mean value; 0.99 mg/ml). Family-allergy in at least one parent and wheeze were the two significant risk factors. Nevertheless, in 22 non-family-allergy children, the occurrence of asthma was also higher than general prevalence (18.2% vs 5.6%). Wheezing was evident in viral infections in infancy, but bacterial culture from sputum or throat swabs failed to find pathogenic bacteria. These results indicate that while the genetic factor may be important, viral infections may be more important because, even in non-family-allergy children, the occurrence of asthma was higher for infants infected in early infancy than the general prevalence for age-matched students.
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Affiliation(s)
- W J Liu
- Department of Pediatrics, Kaohsiung Medical College, Taiwan, R.O.C
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Lo WS, Pelcovits RA, Pindak R, Srajer G. Dynamical behavior of thin ferroelectric liquid-crystal films in ac electric fields. Phys Rev A 1990; 42:3630-3633. [PMID: 9904449 DOI: 10.1103/physreva.42.3630] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Abstract
The clinical and histopathological features of 14 cases of so-called sclerosing haemangioma of the lung are described. All developed in Hong Kong Chinese women. Histochemical and ultrastructural study of these tumours indicates an epithelial origin. The term benign sclerosing pneumocytoma is suggested as being more appropriate for this unusual tumour.
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