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Kar P, Wang CM, Liao CL, Chang TS, Liao WS. Guiding Metal Organic Framework Morphology via Monolayer Artificial Defect-Induced Preferential Facet Selection. JACS AU 2023; 3:1118-1130. [PMID: 37124286 PMCID: PMC10131197 DOI: 10.1021/jacsau.2c00692] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 02/24/2023] [Accepted: 02/24/2023] [Indexed: 05/03/2023]
Abstract
Guiding metal organic framework (MOF) morphology, especially without the need for chemical additives, still remains a challenge. For the first time, we report a unique surface guiding approach in controlling the crystal morphology formation of zeolitic imidazole framework-8 (ZIF-8) and HKUST-1 MOFs on disrupted alkanethiol self-assembled monolayer (SAM)-covered Au substrates. Selective molecule removal is applied to generate diverse SAM matrices rich in artificial molecular defects in a monolayer to direct the dynamic crystal growth process. When a 11-mercaptoundecanol alkanethiol monolayer is ruptured, the hydroxyl tail groups of surface residue molecules act as nucleating sites by coordination with precursor metal ions. Meanwhile, the exposed alkane chain backbones stabilize a particular facet of MOF nuclei in the dynamic growth by slowing down their crystal growth rates along a specific direction. The competitive formation between the [110] and [100] planes of ZIF-8 ultimately regulates the crystal shapes from rhombic dodecahedron, truncated rhombic dodecahedron, and truncated cube to cube. Similarly, changeable morphologies of HKUST-1 crystals are also achieved from cube and tetrakaidekahedron to octahedron, originating from the competitive selection between the [100] and [111] planes. In addition to the artificial matrix preferred orientation of initial nucleation, parameters such as temperature also play a crucial role in the resulting crystal morphology. Standing on the additive-free MOF crystal morphology growth control, porous architectures prepared in this approach can act as templates for ligand-free metal (Au, Ag, and Cu) nanocluster synthesis. The nanocluster-embedded MOF structures represent distinct crystal morphology-dependent optical properties, and interestingly, their fluorescence emission can be highly enhanced by facet-induced nanocluster packing alignments. These findings not only provide a unique thought on MOF crystal morphology guidance but also pave a new route for the accompanied property investigation and further application.
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Wang CM, Chan HS, Liao CL, Chang CW, Liao WS. Gap-directed chemical lift-off lithographic nanoarchitectonics for arbitrary sub-micrometer patterning. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2023; 14:34-44. [PMID: 36703907 PMCID: PMC9830500 DOI: 10.3762/bjnano.14.4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 12/28/2022] [Indexed: 05/09/2023]
Abstract
We introduce a unique soft lithographic operation that exploits stamp roof collapse-induced gaps to selectively remove an alkanethiol self-assembled monolayer (SAM) on Au to generate surface patterns that are orders of magnitude smaller than structures on the original elastomer stamp. The smallest achieved feature dimension is 5 nm using a micrometer-scale structured stamp in a chemical lift-off lithography (CLL) process. Molecular patterns retained in the gaps between stamp features and their circumscribed or inscribed circles follow mathematical predictions, and their sizes can be tuned by altering the stamp structure dimensions, including height, pitch, and shape. These generated surface molecular patterns can function as biorecognition arrays or be transferred to the underneath Au layer for metallic structure creation. By combining CLL process with this gap phenomenon, soft material properties that are previously thought as demerits can be used to achieve sub-10 nm features in a straightforward sketch.
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Affiliation(s)
- Chang-Ming Wang
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Hong-Sheng Chan
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Chia-Li Liao
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Che-Wei Chang
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Wei-Ssu Liao
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
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Mathur P, Fomitcheva Khartchenko A, deMello AJ, Kaigala GV. Open Space Diffusive Filter for Simultaneous Species Retrieval and Separation. Anal Chem 2020; 92:11548-11552. [PMID: 32635720 DOI: 10.1021/acs.analchem.0c02176] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We present a novel method for the local retrieval of surface bound species and their rapid in-line separation using an open space microfluidic device. Separation can be performed in less than 30 s using the difference in diffusivities within parallel microfluidic flows. As a proof-of-principle, we report the rapid and efficient filtration of polystyrene beads from small molecules and surface bound red blood cells from dimethyl sulfoxide for antigen typing.
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Affiliation(s)
- Prerit Mathur
- IBM Research Europe, Säumerstrasse 4, CH-8803 Rüschlikon, Switzerland.,Institute for Chemical and Bioengineering, Dept. of Chemistry and Applied Biosciences, Eidgenössische Technische Hochschule (ETH-Zürich), Vladimir-Prelog-Weg 1-5/10, 8093 Zürich, Switzerland
| | - Anna Fomitcheva Khartchenko
- IBM Research Europe, Säumerstrasse 4, CH-8803 Rüschlikon, Switzerland.,Institute for Chemical and Bioengineering, Dept. of Chemistry and Applied Biosciences, Eidgenössische Technische Hochschule (ETH-Zürich), Vladimir-Prelog-Weg 1-5/10, 8093 Zürich, Switzerland
| | - Andrew J deMello
- Institute for Chemical and Bioengineering, Dept. of Chemistry and Applied Biosciences, Eidgenössische Technische Hochschule (ETH-Zürich), Vladimir-Prelog-Weg 1-5/10, 8093 Zürich, Switzerland
| | - Govind V Kaigala
- IBM Research Europe, Säumerstrasse 4, CH-8803 Rüschlikon, Switzerland
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Belling JN, Cheung KM, Jackman JA, Sut TN, Allen M, Park JH, Jonas SJ, Cho NJ, Weiss PS. Lipid Bicelle Micropatterning Using Chemical Lift-Off Lithography. ACS APPLIED MATERIALS & INTERFACES 2020; 12:13447-13455. [PMID: 32092250 PMCID: PMC7092747 DOI: 10.1021/acsami.9b20617] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Supported lipid membranes are versatile biomimetic coatings for the chemical functionalization of inorganic surfaces. Developing simple and effective fabrication strategies to form supported lipid membranes with micropatterned geometries is a long-standing challenge. Herein, we demonstrate how the combination of chemical lift-off lithography (CLL) and easily prepared lipid bicelle nanostructures can yield micropatterned, supported lipid membranes on gold surfaces with high pattern resolution, conformal character, and biofunctionality. Using CLL, we functionalized gold surfaces with patterned arrays of hydrophilic and hydrophobic self-assembled monolayers (SAMs). Time-lapse fluorescence microscopy imaging revealed that lipid bicelles adsorbed preferentially onto the hydrophilic SAM regions, while there was negligible lipid adsorption onto the hydrophobic SAM regions. Functional receptors could be embedded within the lipid bicelles, which facilitated selective detection of receptor-ligand binding interactions in a model streptavidin-biotin system. Quartz crystal microbalance-dissipation measurements further identified that lipid bicelles adsorb irreversibly and remain intact on top of the hydrophilic SAM regions. Taken together, our findings indicate that lipid bicelles are useful lipid nanostructures for reproducibly assembling micropatterned, supported lipid membranes with precise pattern fidelity.
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Affiliation(s)
- Jason N. Belling
- California NanoSystems Institute, University of California, Los Angeles, Los Angeles, California 90095, United States
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Kevin M. Cheung
- California NanoSystems Institute, University of California, Los Angeles, Los Angeles, California 90095, United States
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Joshua A. Jackman
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
- SKKU-UCLA-NTU Precision Biology Research Center, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Tun Naw Sut
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Matthew Allen
- California NanoSystems Institute, University of California, Los Angeles, Los Angeles, California 90095, United States
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Jae Hyeon Park
- California NanoSystems Institute, University of California, Los Angeles, Los Angeles, California 90095, United States
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Steven J. Jonas
- California NanoSystems Institute, University of California, Los Angeles, Los Angeles, California 90095, United States
- Department of Pediatrics, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California 90095, United States
- Children’s Discovery and Innovation Institute, University of California, Los Angeles, Los Angeles, California 90095, United States
- Eli & Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Nam-Joon Cho
- SKKU-UCLA-NTU Precision Biology Research Center, Sungkyunkwan University, Suwon 16419, Republic of Korea
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Paul S. Weiss
- California NanoSystems Institute, University of California, Los Angeles, Los Angeles, California 90095, United States
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, United States
- SKKU-UCLA-NTU Precision Biology Research Center, Sungkyunkwan University, Suwon 16419, Republic of Korea
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, California 90095, United States
- Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, California 90095, United States
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Chen CY, Wang CM, Liao WS. A Special Connection between Nanofabrication and Analytical Devices: Chemical Lift-Off Lithography. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2019. [DOI: 10.1246/bcsj.20180373] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Chong-You Chen
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Chang-Ming Wang
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Wei-Ssu Liao
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
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