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Thaggard GC, Park KC, Lim J, Maldeni Kankanamalage BKP, Haimerl J, Wilson GR, McBride MK, Forrester KL, Adelson ER, Arnold VS, Wetthasinghe ST, Rassolov VA, Smith MD, Sosnin D, Aprahamian I, Karmakar M, Bag SK, Thakur A, Zhang M, Tang BZ, Castaño JA, Chaur MN, Lerch MM, Fischer RA, Aizenberg J, Herges R, Lehn JM, Shustova NB. Breaking the photoswitch speed limit. Nat Commun 2023; 14:7556. [PMID: 37985777 PMCID: PMC10660956 DOI: 10.1038/s41467-023-43405-w] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 11/07/2023] [Indexed: 11/22/2023] Open
Abstract
The forthcoming generation of materials, including artificial muscles, recyclable and healable systems, photochromic heterogeneous catalysts, or tailorable supercapacitors, relies on the fundamental concept of rapid switching between two or more discrete forms in the solid state. Herein, we report a breakthrough in the "speed limit" of photochromic molecules on the example of sterically-demanding spiropyran derivatives through their integration within solvent-free confined space, allowing for engineering of the photoresponsive moiety environment and tailoring their photoisomerization rates. The presented conceptual approach realized through construction of the spiropyran environment results in ~1000 times switching enhancement even in the solid state compared to its behavior in solution, setting a record in the field of photochromic compounds. Moreover, integration of two distinct photochromic moieties in the same framework provided access to a dynamic range of rates as well as complementary switching in the material's optical profile, uncovering a previously inaccessible pathway for interstate rapid photoisomerization.
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Affiliation(s)
- Grace C Thaggard
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina, 29208, USA
| | - Kyoung Chul Park
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina, 29208, USA
| | - Jaewoong Lim
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina, 29208, USA
| | | | - Johanna Haimerl
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina, 29208, USA
- Chair of Inorganic and Metal-Organic Chemistry, Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748, Garching, Germany
| | - Gina R Wilson
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina, 29208, USA
| | - Margaret K McBride
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina, 29208, USA
| | - Kelly L Forrester
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina, 29208, USA
| | - Esther R Adelson
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina, 29208, USA
| | - Virginia S Arnold
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina, 29208, USA
| | - Shehani T Wetthasinghe
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina, 29208, USA
| | - Vitaly A Rassolov
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina, 29208, USA
| | - Mark D Smith
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina, 29208, USA
| | - Daniil Sosnin
- Department of Chemistry, Dartmouth College, Hanover, NH, 03755, USA
| | - Ivan Aprahamian
- Department of Chemistry, Dartmouth College, Hanover, NH, 03755, USA
| | - Manisha Karmakar
- Department of Chemistry, Jadavpur University, 700032, Kolkata, India
| | - Sayan Kumar Bag
- Department of Chemistry, Jadavpur University, 700032, Kolkata, India
| | - Arunabha Thakur
- Department of Chemistry, Jadavpur University, 700032, Kolkata, India
| | - Minjie Zhang
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, and Guangdong-Hong Kong-Macau Joint Laboratory of Optoelectronic and Magnetic Functional Materials, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 999077, China
| | - Ben Zhong Tang
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, and Guangdong-Hong Kong-Macau Joint Laboratory of Optoelectronic and Magnetic Functional Materials, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 999077, China
- School of Science and Engineering, Shenzhen Institute of Aggregate Science and Technology, The Chinese University of Hong Kong Shenzhen, Guangdong, 518172, China
- Center for Aggregation-Induced Emission, South China University of Technology, Guangzhou, 510640, China
- AIE Institute, Guangzhou Development District, Huangpu, Guangzhou, 510530, China
| | - Jorge A Castaño
- Departamento de Química, Universidad del Valle, AA 25360, Cali, Colombia
| | - Manuel N Chaur
- Departamento de Química, Universidad del Valle, AA 25360, Cali, Colombia
- Centro de Excelencia en Neuvos Materiales (CENM), Universidad del Valle, AA 25360, Cali, Colombia
| | - Michael M Lerch
- Stratingh Institute for Chemistry, University of Groningen, 9747 AG, Groningen, The Netherlands
| | - Roland A Fischer
- Chair of Inorganic and Metal-Organic Chemistry, Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748, Garching, Germany
| | - Joanna Aizenberg
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, 02138, USA
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA
| | - Rainer Herges
- Otto Diels Institute of Organic Chemistry, University of Kiel, 24118, Kiel, Germany
| | - Jean-Marie Lehn
- Laboratoire de Chimie Supramoléculaire, Institut de Science et d'Ingénierie Supramoléculaires (ISIS), Université de Strasbourg, 67000, Strasbourg, France
| | - Natalia B Shustova
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina, 29208, USA.
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Wilson GR, Park KC, Thaggard GC, Martin CR, Hill AR, Haimerl J, Lim J, Maldeni Kankanamalage BKP, Yarbrough BJ, Forrester KL, Fischer RA, Pellechia PJ, Smith MD, Garashchuk S, Shustova NB. Cooperative and Orthogonal Switching in the Solid State Enabled by Metal-Organic Framework Confinement Leading to a Thermo-Photochromic Platform. Angew Chem Int Ed Engl 2023; 62:e202308715. [PMID: 37486788 DOI: 10.1002/anie.202308715] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 07/18/2023] [Accepted: 07/24/2023] [Indexed: 07/26/2023]
Abstract
Cooperative behavior and orthogonal responses of two classes of coordinatively integrated photochromic molecules towards distinct external stimuli were demonstrated on the first example of a photo-thermo-responsive hierarchical platform. Synergetic and orthogonal responses to temperature and excitation wavelength are achieved by confining the stimuli-responsive moieties within a metal-organic framework (MOF), leading to the preparation of a novel photo-thermo-responsive spiropyran-diarylethene based material. Synergistic behavior of two photoswitches enables the study of stimuli-responsive resonance energy transfer as well as control of the photoinduced charge transfer processes, milestones required to advance optoelectronics development. Spectroscopic studies in combination with theoretical modeling revealed a nonlinear effect on the material electronic structure arising from the coordinative integration of photoresponsive molecules with distinct photoisomerization mechanisms. Thus, the reported work covers multivariable facets of not only fundamental aspects of photoswitch cooperativity, but also provides a pathway to modulate photophysics and electronics of multidimensional functional materials exhibiting thermo-photochromism.
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Affiliation(s)
- Gina R Wilson
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA
| | - Kyoung Chul Park
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA
| | - Grace C Thaggard
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA
| | - Corey R Martin
- Savannah River National Laboratory, Aiken, SC 29808, USA
| | - Austin R Hill
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA
| | - Johanna Haimerl
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA
- Chair of Inorganic and Metal-Organic Chemistry, Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748, Garching, Germany
| | - Jaewoong Lim
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA
| | | | - Brandon J Yarbrough
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA
| | - Kelly L Forrester
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA
| | - Roland A Fischer
- Chair of Inorganic and Metal-Organic Chemistry, Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748, Garching, Germany
| | - Perry J Pellechia
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA
| | - Mark D Smith
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA
| | - Sophya Garashchuk
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA
| | - Natalia B Shustova
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA
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Thaggard GC, Haimerl J, Fischer RA, Park KC, Shustova NB. Traffic Lights for Catalysis: Stimuli-Responsive Molecular and Extended Catalytic Systems. Angew Chem Int Ed Engl 2023:e202302859. [PMID: 36995914 DOI: 10.1002/anie.202302859] [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] [Received: 02/24/2023] [Revised: 03/29/2023] [Accepted: 03/30/2023] [Indexed: 03/31/2023]
Abstract
The advances made in the field of stimuli-responsive catalysis during the last five years with a focus on the novel recently-emerged directions and applications have been surveyed. Metal-free catalysts and organometallic complexes, as well as biomimetic systems and extended structures, which display switchable catalytic activity for a variety of organic transformations, are discussed. Light-activated systems comprised of photochromic molecules capable of modulating reaction rate, yield, or enantioselectivity based on geometric and electronic changes associated with photoisomerization are the focus of the detailed discussion. Alternative stimuli, including pH and temperature, which could be applied either alone or in combination with light, are also addressed. Recent advances clearly demonstrate that the capability to finely tune catalyst behavior via an external stimulus is a powerful tool that could alter the landscape of sustainable chemistry.
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Affiliation(s)
- Grace C Thaggard
- University of South Carolina, Chemistry and Biochemistry, UNITED STATES
| | - Johanna Haimerl
- University of South Carolina, Chemistry and Biochemistry, UNITED STATES
| | - Roland A Fischer
- Technical University of Munich: Technische Universitat Munchen, Chemistry, GERMANY
| | - Kyoung Chul Park
- University of South Carolina, Chemistry and Biochemistry, UNITED STATES
| | - Natalia B Shustova
- University of South Carolina, Chemistry and Biochemistry, 631 Sumter street GSRC-533, SC, Columbia, UNITED STATES
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4
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Thaggard GC, Haimerl J, Park KC, Lim J, Fischer RA, Maldeni Kankanamalage BKP, Yarbrough BJ, Wilson GR, Shustova NB. Metal-Photoswitch Friendship: From Photochromic Complexes to Functional Materials. J Am Chem Soc 2022; 144:23249-23263. [PMID: 36512744 DOI: 10.1021/jacs.2c09879] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Cooperative metal-photoswitch interfaces comprise an application-driven field which is based on strategic coupling of metal cations and organic photochromic molecules to advance the behavior of both components, resulting in dynamic molecular and material properties controlled through external stimuli. In this Perspective, we highlight the ways in which metal-photoswitch interplay can be utilized as a tool to modulate a system's physicochemical properties and performance in a variety of structural motifs, including discrete molecular complexes or cages, as well as periodic structures such as metal-organic frameworks. This Perspective starts with photochromic molecular complexes as the smallest subunit in which metal-photoswitch interactions can occur, and progresses toward functional materials. In particular, we explore the role of the metal-photoswitch relationship for gaining fundamental knowledge of switchable electronic and magnetic properties, as well as in the design of stimuli-responsive sensors, optically gated memory devices, catalysts, and photodynamic therapeutic agents. The abundance of stimuli-responsive systems in the natural world only foreshadows the creative directions that will uncover the full potential of metal-photoswitch interactions in the coming years.
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Affiliation(s)
- Grace C Thaggard
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Johanna Haimerl
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States.,Inorganic and Metal-Organic Chemistry, Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, Garching 85748, Germany
| | - Kyoung Chul Park
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Jaewoong Lim
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Roland A Fischer
- Inorganic and Metal-Organic Chemistry, Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, Garching 85748, Germany
| | - Buddhima K P Maldeni Kankanamalage
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Brandon J Yarbrough
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Gina R Wilson
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Natalia B Shustova
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
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5
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Stanley PM, Haimerl J, Thomas C, Urstoeger A, Schuster M, Shustova NB, Casini A, Rieger B, Warnan J, Fischer RA. Frontispiece: Host–Guest Interactions in a Metal–Organic Framework Isoreticular Series for Molecular Photocatalytic CO
2
Reduction. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/anie.202183361] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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)
- Philip M. Stanley
- Chair of Inorganic and Metal–Organic Chemistry Department of Chemistry Technical University of Munich Lichtenbergstrasse 4 Garching Germany
- WACKER-Chair of Macromolecular Chemistry Department of Chemistry Technical University of Munich Lichtenbergstrasse 4 Garching Germany
| | - Johanna Haimerl
- Chair of Inorganic and Metal–Organic Chemistry Department of Chemistry Technical University of Munich Lichtenbergstrasse 4 Garching Germany
- Department of Chemistry and Biochemistry University of South Carolina Columbia South Carolina USA
| | - Christopher Thomas
- WACKER-Chair of Macromolecular Chemistry Department of Chemistry Technical University of Munich Lichtenbergstrasse 4 Garching Germany
| | - Alexander Urstoeger
- Division of Analytical Chemistry Department of Chemistry Technical University of Munich Lichtenbergstrasse 4 Garching Germany
| | - Michael Schuster
- Division of Analytical Chemistry Department of Chemistry Technical University of Munich Lichtenbergstrasse 4 Garching Germany
| | - Natalia B. Shustova
- Department of Chemistry and Biochemistry University of South Carolina Columbia South Carolina USA
| | - Angela Casini
- Chair of Medicinal and Bioinorganic Chemistry Department of Chemistry Technical University of Munich Lichtenbergstrasse 4 Garching Germany
| | - Bernhard Rieger
- WACKER-Chair of Macromolecular Chemistry Department of Chemistry Technical University of Munich Lichtenbergstrasse 4 Garching Germany
| | - Julien Warnan
- Chair of Inorganic and Metal–Organic Chemistry Department of Chemistry Technical University of Munich Lichtenbergstrasse 4 Garching Germany
| | - Roland A. Fischer
- Chair of Inorganic and Metal–Organic Chemistry Department of Chemistry Technical University of Munich Lichtenbergstrasse 4 Garching Germany
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Stanley PM, Haimerl J, Thomas C, Urstoeger A, Schuster M, Shustova NB, Casini A, Rieger B, Warnan J, Fischer RA. Frontispiz: Wirt‐Gast‐Wechselwirkungen in einer Serie isoretikulärer Metall‐organischer Gerüststrukturen für molekulare photokatalytische CO
2
‐Reduktion. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202183361] [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: 11/11/2022]
Affiliation(s)
- Philip M. Stanley
- Lehrstuhl für Anorganische und Metallorganische Chemie Fakultät für Chemie Technische Universität München Lichtenbergstraße 4 Garching Deutschland
- WACKER-Lehrstuhl für Makromolekulare Chemie Fakultät für Chemie Technische Universität München Lichtenbergstraße 4 Garching Deutschland
| | - Johanna Haimerl
- Lehrstuhl für Anorganische und Metallorganische Chemie Fakultät für Chemie Technische Universität München Lichtenbergstraße 4 Garching Deutschland
- Fakultät für Chemie und Biochemie University of South Carolina Columbia South Carolina USA
| | - Christopher Thomas
- WACKER-Lehrstuhl für Makromolekulare Chemie Fakultät für Chemie Technische Universität München Lichtenbergstraße 4 Garching Deutschland
| | - Alexander Urstoeger
- Professur für Analytische Chemie Fakultät für Chemie Technische Universität München Lichtenbergstraße 4 Garching Deutschland
| | - Michael Schuster
- Professur für Analytische Chemie Fakultät für Chemie Technische Universität München Lichtenbergstraße 4 Garching Deutschland
| | - Natalia B. Shustova
- Fakultät für Chemie und Biochemie University of South Carolina Columbia South Carolina USA
| | - Angela Casini
- Lehrstuhl für Medizinische und Bioanorganische Chemie Fakultät für Chemie Technische Universität München Lichtenbergstraße 4 Garching Deutschland
| | - Bernhard Rieger
- WACKER-Lehrstuhl für Makromolekulare Chemie Fakultät für Chemie Technische Universität München Lichtenbergstraße 4 Garching Deutschland
| | - Julien Warnan
- Lehrstuhl für Anorganische und Metallorganische Chemie Fakultät für Chemie Technische Universität München Lichtenbergstraße 4 Garching Deutschland
| | - Roland A. Fischer
- Lehrstuhl für Anorganische und Metallorganische Chemie Fakultät für Chemie Technische Universität München Lichtenbergstraße 4 Garching Deutschland
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7
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Stanley PM, Haimerl J, Thomas C, Urstoeger A, Schuster M, Shustova NB, Casini A, Rieger B, Warnan J, Fischer RA. Host-Guest Interactions in a Metal-Organic Framework Isoreticular Series for Molecular Photocatalytic CO 2 Reduction. Angew Chem Int Ed Engl 2021; 60:17854-17860. [PMID: 34014024 PMCID: PMC8453824 DOI: 10.1002/anie.202102729] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 05/08/2021] [Indexed: 01/23/2023]
Abstract
A strategy to improve homogeneous molecular catalyst stability, efficiency, and selectivity is the immobilization on supporting surfaces or within host matrices. Herein, we examine the co‐immobilization of a CO2 reduction catalyst [ReBr(CO)3(4,4′‐dcbpy)] and a photosensitizer [Ru(bpy)2(5,5′‐dcbpy)]Cl2 using the isoreticular series of metal–organic frameworks (MOFs) UiO‐66, ‐67, and ‐68. Specific host pore size choice enables distinct catalyst and photosensitizer spatial location—either at the outer MOF particle surface or inside the MOF cavities—affecting catalyst stability, electronic communication between reaction center and photosensitizer, and consequently the apparent catalytic rates. These results allow for a rational understanding of an optimized supramolecular layout of catalyst, photosensitizer, and host matrix.
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Affiliation(s)
- Philip M Stanley
- Chair of Inorganic and Metal-Organic Chemistry, Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, Garching, Germany.,WACKER-Chair of Macromolecular Chemistry, Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, Garching, Germany
| | - Johanna Haimerl
- Chair of Inorganic and Metal-Organic Chemistry, Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, Garching, Germany.,Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina, USA
| | - Christopher Thomas
- WACKER-Chair of Macromolecular Chemistry, Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, Garching, Germany
| | - Alexander Urstoeger
- Division of Analytical Chemistry, Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, Garching, Germany
| | - Michael Schuster
- Division of Analytical Chemistry, Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, Garching, Germany
| | - Natalia B Shustova
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina, USA
| | - Angela Casini
- Chair of Medicinal and Bioinorganic Chemistry, Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, Garching, Germany
| | - Bernhard Rieger
- WACKER-Chair of Macromolecular Chemistry, Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, Garching, Germany
| | - Julien Warnan
- Chair of Inorganic and Metal-Organic Chemistry, Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, Garching, Germany
| | - Roland A Fischer
- Chair of Inorganic and Metal-Organic Chemistry, Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, Garching, Germany
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Stanley PM, Haimerl J, Thomas C, Urstoeger A, Schuster M, Shustova NB, Casini A, Rieger B, Warnan J, Fischer RA. Wirt‐Gast‐Wechselwirkungen in einer Serie isoretikulärer Metall‐organischer Gerüststrukturen für molekulare photokatalytische CO
2
‐Reduktion. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202102729] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Philip M. Stanley
- Lehrstuhl für Anorganische und Metallorganische Chemie Fakultät für Chemie Technische Universität München Lichtenbergstraße 4 Garching Deutschland
- WACKER-Lehrstuhl für Makromolekulare Chemie Fakultät für Chemie Technische Universität München Lichtenbergstraße 4 Garching Deutschland
| | - Johanna Haimerl
- Lehrstuhl für Anorganische und Metallorganische Chemie Fakultät für Chemie Technische Universität München Lichtenbergstraße 4 Garching Deutschland
- Fakultät für Chemie und Biochemie University of South Carolina Columbia South Carolina USA
| | - Christopher Thomas
- WACKER-Lehrstuhl für Makromolekulare Chemie Fakultät für Chemie Technische Universität München Lichtenbergstraße 4 Garching Deutschland
| | - Alexander Urstoeger
- Professur für Analytische Chemie Fakultät für Chemie Technische Universität München Lichtenbergstraße 4 Garching Deutschland
| | - Michael Schuster
- Professur für Analytische Chemie Fakultät für Chemie Technische Universität München Lichtenbergstraße 4 Garching Deutschland
| | - Natalia B. Shustova
- Fakultät für Chemie und Biochemie University of South Carolina Columbia South Carolina USA
| | - Angela Casini
- Lehrstuhl für Medizinische und Bioanorganische Chemie Fakultät für Chemie Technische Universität München Lichtenbergstraße 4 Garching Deutschland
| | - Bernhard Rieger
- WACKER-Lehrstuhl für Makromolekulare Chemie Fakultät für Chemie Technische Universität München Lichtenbergstraße 4 Garching Deutschland
| | - Julien Warnan
- Lehrstuhl für Anorganische und Metallorganische Chemie Fakultät für Chemie Technische Universität München Lichtenbergstraße 4 Garching Deutschland
| | - Roland A. Fischer
- Lehrstuhl für Anorganische und Metallorganische Chemie Fakultät für Chemie Technische Universität München Lichtenbergstraße 4 Garching Deutschland
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9
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Baarfuß S, Haimerl J, Zrenner B, Liebold A, Holzapfel K. Unklarer rechtsatrialer Tumor bei 40-jährigem Patienten mit Marfan-Syndrom. Radiologe 2017; 57:850-852. [DOI: 10.1007/s00117-017-0286-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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10
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Debl K, Djavidani B, Buchner S, Heinicke N, Fredersdorf S, Haimerl J, Poschenrieder F, Feuerbach S, Riegger GAJ, Luchner A. Assessment of the anatomic regurgitant orifice in aortic regurgitation: a clinical magnetic resonance imaging study. Heart 2008; 94:e8. [PMID: 17686805 DOI: 10.1136/hrt.2006.108720] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND The aim of our study was to determine whether planimetry of the anatomic regurgitant orifice (ARO) in patients with aortic regurgitation (AR) by magnetic resonance imaging (MRI) is feasible and whether ARO by MRI correlates with the severity of AR. METHODS AND RESULTS Planimetry of ARO by MRI was performed on a clinical magnetic resonance system (1.5 T Sonata, Siemens Medical Solutions) in 45 patients and correlated with the regurgitant fraction (RgF) and regurgitant volume (RgV) determined by MRI phase velocity mapping (PVM; MRI-RgF, MRI-RgV, n = 45) and with invasively quantified AR by supravalvular aortography (n = 32) and RgF upon cardiac catheterisation (CATH-RgF, n = 15). Determination of ARO was possible in 98% (44/45) of the patients with adequate image quality. MRI-RgF and CATH-RgF were modestly correlated (n = 15, r = 0.71, p<0.01). ARO was closely correlated with MRI-RgF (n = 44, r = 0.88, p<0.001) and was modestly correlated with CATH-RgF (n = 14, r = 0.66, p = 0.01). Sensitivity and specificity of ARO to detect moderately severe and severe aortic regurgitation (defined as MRI-RgF > or =40%) were 96% and 95% at a threshold of 0.28 cm2 (AUC = 0.99). Of note, sensitivity and specificity of ARO to detect moderately severe and severe AR at catheterisation (defined as CATH-RgF > or =40% or supravalvular aortography > or =3+) were 90% and 91% at a similar threshold of 0.28 cm2 (AUC = 0.95). Lastly, sensitivity and specificity of ARO to detect severe aortic regurgitation (defined as MRI-RgF > or =50% and/or regurgitant volume > or =60 ml) were 83% and 97% at a threshold of 0.48 cm2 (AUC = 0.97). CONCLUSIONS Visualisation and planimetry of the ARO in patients with AR are feasible by MRI. There is a strong correlation of ARO with RgV and RgF assessed by PVM and with invasively graded AR at catheterisation. Therefore, determination of ARO by MRI is a new non-invasive measure for assessing the severity of AR.
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Affiliation(s)
- K Debl
- Klinik und Poliklinik für Innere Medizin II, Klinikum der Universität, Regensburg, Germany.
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11
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Mañon R, Lee C, Langen K, Meeks S, Kupelian P, Haimerl J, Shellenberger T, Olivera G. Do Anatomic Changes During Radiation Impact Normal Tissue and Target Dosimetry? An Analysis of Calculated Cumulative Dose in Head and Neck Patients. Int J Radiat Oncol Biol Phys 2007. [DOI: 10.1016/j.ijrobp.2007.07.1583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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12
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Lee C, Langen K, Kupelian P, Meeks S, Mañon R, Lu W, Haimerl J, Olivera G. Positional and Volumetric Changes in Parotid Glands During Head and Neck Radiation Therapy Assessed Using Deformable Image Registration. Int J Radiat Oncol Biol Phys 2007. [DOI: 10.1016/j.ijrobp.2007.07.368] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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13
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Langen K, Kupelian P, Zeidan O, Meeks S, Jeswani S, Ruchala K, Haimerl J, Olivera G. 2237. Int J Radiat Oncol Biol Phys 2006. [DOI: 10.1016/j.ijrobp.2006.07.643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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14
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Meeks S, Manon R, Kupelian P, Lu W, Chen Q, Langen K, Ruchala K, Haimerl J, Olivera G. 180. Int J Radiat Oncol Biol Phys 2006. [DOI: 10.1016/j.ijrobp.2006.07.212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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15
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Ruchala K, Olivera G, Homp J, Schnarr E, Haimerl J, Lu W, Chen Q, Meeks S, Langen K, Kupelian P. SU-FF-T-13: A Fast Scan-Plan-Treat Mode for Topographic Breast Treatment Delivery. Med Phys 2006. [DOI: 10.1118/1.2240919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Meeks S, Manon R, Kupelian P, Langen K, Lu W, Chen Q, Haimerl J, Ruchala K, Olivera G. SU-FF-J-19: Adaptive Radiation Therapy Using Helical Tomotherapy. Med Phys 2006. [DOI: 10.1118/1.2240798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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17
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Ruchala K, Olivera G, Lu W, Haimerl J, Schnarr E, Chen Q, Meeks S, Langen K, Kupelian P. SU-DD-A3-03: A Dose-Guided Adaptive Therapy Process for Treatment Evaluation and Correction. Med Phys 2006. [DOI: 10.1118/1.2240145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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18
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Langen K, Meeks S, Limaye A, Zeidan O, Kupelian P, Manon R, Olivera G, Ruchala K, Haimerl J, Lu W. SU-EE-A3-05: Accuracy Testing of Deformable Registration Using Dosimetric End-Points. Med Phys 2006. [DOI: 10.1118/1.2240230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Jenkins W, Langen K, Meeks S, Olivera G, Ruchala K, Haimerl J, Wagner T, Willoughby T, Kupelian P. Use of Daily Megavoltage CT Imaging to Determine Delivered Dose Variations in Head and Neck Cancer Patients. Int J Radiat Oncol Biol Phys 2005. [DOI: 10.1016/j.ijrobp.2005.07.618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Langen K, Buchholz D, Victor G, Meeks S, Wagner T, Willoughby T, Olivera G, Ruchala K, Haimerl J, Kupelian P. Evaluation of Breast Tumor Bed Alignment Techniques for Image Guided Radiotherapy. Int J Radiat Oncol Biol Phys 2005. [DOI: 10.1016/j.ijrobp.2005.07.312] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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21
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Haimerl J, Freitag-Krikovic A, Rauch A, Sauer E. Quantification of aortic valve area and left ventricular muscle mass in healthy subjects and patients with symptomatic aortic valve stenosis by MRI. ACTA ACUST UNITED AC 2005; 94:173-81. [PMID: 15747039 DOI: 10.1007/s00392-005-0198-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2004] [Accepted: 11/02/2004] [Indexed: 11/26/2022]
Abstract
MRI allows visualization and planimetry of the aortic valve orifice and accurate determination of left ventricular muscle mass, which are important parameters in aortic stenosis. In contrast to invasive methods, MRI planimetry of the aortic valve area (AVA) is flow independent. AVA is usually indexed to body surface area. Left ventricular muscle mass is dependent on weight and height in healthy individuals. We studied AVA, left ventricular muscle mass (LMM) and ejection fraction (EF) in 100 healthy individuals and in patients with symptomatic aortic valve stenosis (AS). All were examined by MRI (1.5 Tesla Siemens Sonate) and the AVA was visualized in segmented 2D flash sequences and planimetry of the performed AVA was manually. The aortic valve area in healthy individuals was 3.9+/-0.7 cm(2), and the LMM was 99+/-27 g. In a correlation analysis, the strongest correlation of AVA was to height (r=0.75, p<0.001) and for LMM to weight (r=0.64, p<0.001). In a multiple regression analysis, the expected AVA for healthy subjects can be predicted using body height: AVA=-2.64+0.04 x(height in cm) -0.47 x w (w=0 for man, w=1 for female).In patients with aortic valve stenosis, AVA was 1.0+/-0.35 cm(2), in correlation to cath lab r=0.72, and LMM was 172+/-56 g. We compared the AS patients results with the data of the healthy subjects, where the reduction of the AVA was 28+/-10% of the expected normal value, while LMM was 42% higher in patients with AS. There was no correlation to height, weight or BSA in patients with AS. With cardiac MRI, planimetry of AVA for normal subjects and patients with AS offered a simple, fast and non-invasive method to quantify AVA. In addition LMM and EF could be determined. The strong correlation between height and AVA documented in normal subjects offered the opportunity to integrate this relation between expected valve area and definitive orifice in determining the disease of the aortic valve for the individual patient. With diagnostic MRI in patients with AS, invasive measurements of the systolic transvalvular gradient does not seem to be necessary.
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Affiliation(s)
- J Haimerl
- Department of Internal Medicine, Hospital Landshut-Achdorf, Achdorfer Weg 3, 84036 Landshut, Germany.
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22
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Langen KM, Meeks SL, Poole DO, Wagner TH, Willoughby TR, Kupelian PA, Ruchala KJ, Haimerl J, Olivera GH. The use of megavoltage CT (MVCT) images for dose recomputations. Phys Med Biol 2005; 50:4259-76. [PMID: 16148392 DOI: 10.1088/0031-9155/50/18/002] [Citation(s) in RCA: 126] [Impact Index Per Article: 6.6] [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: 12/11/2022]
Abstract
Megavoltage CT (MVCT) images of patients are acquired daily on a helical tomotherapy unit (TomoTherapy, Inc., Madison, WI). While these images are used primarily for patient alignment, they can also be used to recalculate the treatment plan for the patient anatomy of the day. The use of MVCT images for dose computations requires a reliable CT number to electron density calibration curve. In this work, we tested the stability of the MVCT numbers by determining the variation of this calibration with spatial arrangement of the phantom, time and MVCT acquisition parameters. The two calibration curves that represent the largest variations were applied to six clinical MVCT images for recalculations to test for dosimetric uncertainties. Among the six cases tested, the largest difference in any of the dosimetric endpoints was 3.1% but more typically the dosimetric endpoints varied by less than 2%. Using an average CT to electron density calibration and a thorax phantom, a series of end-to-end tests were run. Using a rigid phantom, recalculated dose volume histograms (DVHs) were compared with plan DVHs. Using a deformed phantom, recalculated point dose variations were compared with measurements. The MVCT field of view is limited and the image space outside this field of view can be filled in with information from the planning kVCT. This merging technique was tested for a rigid phantom. Finally, the influence of the MVCT slice thickness on the dose recalculation was investigated. The dosimetric differences observed in all phantom tests were within the range of dosimetric uncertainties observed due to variations in the calibration curve. The use of MVCT images allows the assessment of daily dose distributions with an accuracy that is similar to that of the initial kVCT dose calculation.
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Affiliation(s)
- K M Langen
- Department of Radiation Oncology, M. D. Anderson Cancer Center Orlando, Orlando, FL 32806, USA.
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Langen K, Meeks S, Poole D, Wagner T, Willoughby T, Kupelian P, Ruchala K, Haimerl J, Olivera G. SU-FF-T-324: The Use of Megavoltage CT (MVCT) Images for Dose Recomputation. Med Phys 2005. [DOI: 10.1118/1.1998053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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24
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Langen K, Meeks S, Poole D, Wagner T, Willoughby T, Kupelian P, Ruchala K, Haimerl J, Olivera G. TH-C-T-6C-05: Evaluation of TomoTherapy's MVCT Number Integrity. Med Phys 2005. [DOI: 10.1118/1.1998661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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25
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Olivera G, Ruchala K, Lu W, Haimerl J, Schnarr E, Langen K, Kupelian P, Meeks S, Mackie T. SU-FF-T-363: Dynamic Tangents and Topotherapy: New Delivery Capabilities for Helical Tomotherapy. Med Phys 2005. [DOI: 10.1118/1.1998092] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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26
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Langen K, Poole D, Zhang Y, Willoughby T, McNerny G, Meeks S, Haimerl J, Ruchala K, Olivera G, Kupelian P. Using daily MVCT images to calculate daily rectal dose volume histograms in prostate cancer patients treated with a helical tomotherapy unit. Int J Radiat Oncol Biol Phys 2004. [DOI: 10.1016/j.ijrobp.2004.07.620] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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