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Haugen EJ, Locke AK, Correa H, Baba JS, Mahadevan-Jansen A, Hiremath G. Characterization of lamina propria remodeling in pediatric eosinophilic esophagitis using second harmonic generation microscopy. TRANSLATIONAL MEDICINE COMMUNICATIONS 2024; 9:10. [PMID: 38698908 PMCID: PMC11065090 DOI: 10.1186/s41231-024-00170-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 03/17/2024] [Indexed: 05/05/2024]
Abstract
Eosinophilic esophagitis (EoE) is a chronic inflammatory condition characterized by an intense infiltration of eosinophils into the esophageal epithelium. When not adequately controlled, eosinophilic inflammation can lead to changes in components of the extracellular matrix (ECM) of the lamina propria. Particularly, alterations to the collagen fiber matrix can lead to lamina propria fibrosis (LPF), which plays an important role in the fibrostenotic complications of EoE. Current approaches to assess LPF in EoE are prone to inter-observer inconsistencies and provide limited insight into the structural remodeling of the ECM. An objective approach to quantify LPF can eliminate inter-observer inconsistencies and provide novel insights into the fibrotic transformation of the lamina propria in EoE. Second harmonic generation (SHG) microscopy is a powerful modality for objectively quantifying disease associated alterations in ECM collagen structure that is finding increasing use for clinical research. We used SHG with morphometric analysis (SHG-MA) to characterize lamina propria collagen fibers and ECM porosity in esophageal biopsies collected from children with active EoE (n = 11), inactive EoE (n = 11), and non-EoE (n = 11). The collagen fiber width quantified by SHG-MA correlated positively with peak eosinophil count (r = 0.65, p < 0.005) and histopathologist scoring of LPF (r = 0.52, p < 0.005) in the esophageal biopsies. Patients with active EoE had a significant enlargement of ECM pores compared to inactive EoE and non-EoE (p < 0.005), with the mean pore area correlating positively with EoE activity (r = 0.76, p < 0.005) and LPF severity (r = 0.65, p < 0.005). These results indicate that SHG-MA can be utilized to objectively characterize and provide novel insights into lamina propria ECM structural remodeling in children with EoE, which could aid in monitoring disease progression.
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Affiliation(s)
- Ezekiel J. Haugen
- Vanderbilt Biophotonics Center, Vanderbilt University, Nashville, TN 37232, USA
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37232, USA
| | - Andrea K. Locke
- Vanderbilt Biophotonics Center, Vanderbilt University, Nashville, TN 37232, USA
- Department of Chemistry, Vanderbilt University, Nashville, TN 37232, USA
| | - Hernán Correa
- Division of Pediatric Pathology, Monroe Carell Jr. Children’s Hospital at Vanderbilt, Vanderbilt University Medical Center, Nashville, TN 27232, USA
| | - Justin S. Baba
- Vanderbilt Biophotonics Center, Vanderbilt University, Nashville, TN 37232, USA
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37232, USA
| | - Anita Mahadevan-Jansen
- Vanderbilt Biophotonics Center, Vanderbilt University, Nashville, TN 37232, USA
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37232, USA
| | - Girish Hiremath
- Vanderbilt Biophotonics Center, Vanderbilt University, Nashville, TN 37232, USA
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37232, USA
- Division of Pediatric Gastroenterology, Hepatology and Nutrition, Monroe Carell Jr. Children’s Hospital at Vanderbilt, Vanderbilt University Medical Center, Nashville, TN 37232, USA
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2
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Chang S, Giannico GA, Haugen E, Jardaneh A, Baba J, Mahadevan-Jansen A, Chang SS, Bowden AK. Multiparameter interferometric polarization-enhanced imaging differentiates carcinoma in situ from inflammation of the bladder: an ex vivo study. JOURNAL OF BIOMEDICAL OPTICS 2023; 28:102907. [PMID: 37576611 PMCID: PMC10415042 DOI: 10.1117/1.jbo.28.10.102907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 07/28/2023] [Accepted: 07/31/2023] [Indexed: 08/15/2023]
Abstract
Significance Successful differentiation of carcinoma in situ (CIS) from inflammation in the bladder is key to preventing unnecessary biopsies and enabling accurate therapeutic decisions. Current standard-of-care diagnostic imaging techniques lack the specificity needed to differentiate these states, leading to false positives. Aim We introduce multiparameter interferometric polarization-enhanced (MultiPIPE) imaging as a promising technology to improve the specificity of detection for better biopsy guidance and clinical outcomes. Approach In this ex vivo study, we extract tissue attenuation-coefficient-based and birefringence-based parameters from MultiPIPE imaging data, collected with a bench-top system, to develop a classifier for the differentiation of benign and CIS tissues. We also analyze morphological features from second harmonic generation imaging and histology slides and perform imaging-to-morphology correlation analysis. Results MultiPIPE enhances specificity to differentiate CIS from benign tissues by nearly 20% and reduces the false-positive rate by more than four-fold over clinical standards. We also show that the MultiPIPE measurements correlate well with changes in morphological features in histological assessments. Conclusions The results of our study show the promise of MultiPIPE imaging to be used for better differentiation of bladder inflammation from flat tumors, leading to a fewer number of unnecessary procedures and shorter operating room (OR) time.
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Affiliation(s)
- Shuang Chang
- Vannderbilt University, Vanderbilt Biophotonics Center, Department of Biomedical Engineering, Nashville, Tennessee, United States
| | - Giovanna A. Giannico
- Vanderbilt University Medical Center, Department of Pathology, Microbiology, and Immunology, Nashville, Tennessee, United States
| | - Ezekiel Haugen
- Vannderbilt University, Vanderbilt Biophotonics Center, Department of Biomedical Engineering, Nashville, Tennessee, United States
| | - Ali Jardaneh
- Vanderbilt University Medical Center, Department of Urology, Nashville, Tennessee, United States
| | - Justin Baba
- Vannderbilt University, Vanderbilt Biophotonics Center, Department of Biomedical Engineering, Nashville, Tennessee, United States
| | - Anita Mahadevan-Jansen
- Vannderbilt University, Vanderbilt Biophotonics Center, Department of Biomedical Engineering, Nashville, Tennessee, United States
| | - Sam S. Chang
- Vanderbilt University Medical Center, Department of Urology, Nashville, Tennessee, United States
| | - Audrey K. Bowden
- Vannderbilt University, Vanderbilt Biophotonics Center, Department of Biomedical Engineering, Nashville, Tennessee, United States
- Vanderbilt University, Department of Electrical and Computer Engineering, Nashville, Tennessee, United States
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3
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Olumba ME, O'Donnell RM, Rohrabaugh TN, Teets TS. Triplet-Triplet Energy Transfer in Bis-Cyclometalated Iridium Complexes with Pyrene-Substituted Isocyanides. Inorg Chem 2023; 62:13702-13711. [PMID: 37579498 DOI: 10.1021/acs.inorgchem.3c00457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/16/2023]
Abstract
Nonlinear optical (NLO) materials are able to modulate responses of electromagnetic radiation, leading to phenomena critical to modern telecommunications technologies. The last two decades have seen significant advances in the area of molecular nonlinear chromophores, particularly with respect to reverse-saturable absorption (RSA). Here, we introduce a strategy for intense excited-state absorption (ESA) that involves bis-cyclometalated iridium complexes with isocyanide ancillary ligands decorated with pyrene triplet acceptors. Upon excitation, the complexes undergo rapid triplet-triplet energy transfer (TTET) to the acceptor excited states. This report describes five bis-cyclometalated iridium complexes using two different pyrene-substituted isocyanides with the general formula [Ir(C^N)2(CNAr)2]PF6 (C^N = cyclometalating ligand, CNAr = isocyanide ancillary ligand: CNArpyr = 2,6-dimethyl-4-(1-pyrenyl)phenyl isocyanide, CNpyr = 1-pyrenyl isocyanide). The synthesized complexes were thoroughly characterized via 1H and 13C{1H} NMR spectroscopy, Fourier-transform Infrared spectroscopy, and electrospray ionization mass spectrometry. The excited states were evaluated with UV-vis absorption, steady-state and time-resolved photoluminescence, and transient absorption spectroscopy. Phosphorescence is completely quenched at room temperature, but in the solvent glass matrix at 77 K, there is luminescence originating from a π → π* triplet state on the pyrene moiety, abbreviated herein as 3pyrene. All five complexes display intense and long-lived ESA originating from the 3pyrene state. The localization of the ground-state absorption on the cyclometalating ligands and the excited-state absorption on the pyrene moiety allows for independent tuning of ground-state absorption (GSA) and ESA to optimize RSA and other NLO attributes.
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Affiliation(s)
- Morris E Olumba
- Department of Chemistry, University of Houston, 3585 Cullen Blvd., Room 112, Houston, Texas 77204-5003, United States
| | - Ryan M O'Donnell
- U.S. Army Combat Capabilities Development Command, Army Research Laboratory, 2800 Powder Mill Road, Adelphi, Maryland 20783, United States
| | - Thomas N Rohrabaugh
- U.S. Army Combat Capabilities Development Command, Army Research Laboratory, 2800 Powder Mill Road, Adelphi, Maryland 20783, United States
| | - Thomas S Teets
- Department of Chemistry, University of Houston, 3585 Cullen Blvd., Room 112, Houston, Texas 77204-5003, United States
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Thomas G, Fitzgerald ST, Gautam R, Chen F, Haugen E, Rasiah PK, Adams WR, Mahadevan-Jansen A. Enhanced characterization of breast cancer phenotypes using Raman micro-spectroscopy on stainless steel substrate. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023; 15:1188-1205. [PMID: 36799369 DOI: 10.1039/d2ay01764d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Biochemical insights into varying breast cancer (BC) phenotypes can provide a fundamental understanding of BC pathogenesis, while identifying novel therapeutic targets. Raman spectroscopy (RS) can gauge these biochemical differences with high specificity. For routine RS, cells are traditionally seeded onto calcium fluoride (CaF2) substrates that are costly and fragile, limiting its widespread adoption. Stainless steel has been interrogated previously as a less expensive alternative to CaF2 substrates, while reporting increased Raman signal intensity than the latter. We sought to further investigate and compare the Raman signal quality measured from stainless steel versus CaF2 substrates by characterizing different BC phenotypes with altered human epidermal growth factor receptor 2 (HER2) expression. Raman spectra were obtained on stainless steel and CaF2 substrates for HER2 negative cells - MDA-MB-231, MDA-MB-468 and HER2 overexpressing cells - AU565, SKBr3. Upon analyzing signal-to-noise ratios (SNR), stainless steel provided a stronger Raman signal, improving SNR by 119% at 1450 cm-1 and 122% at 2925 cm-1 on average compared to the CaF2 substrate. Utilizing only 22% of laser power on sample relative to the CaF2 substrate, stainless steel still yielded improved spectral characterization over CaF2, achieving 96.0% versus 89.8% accuracy in BC phenotype discrimination and equivalent 100.0% accuracy in HER2 status classification. Spectral analysis further highlighted increased lipogenesis and altered metabolism in HER2 overexpressing cells, which was subsequently visualized with coherent anti-Stokes Raman scattering microscopy. Our findings demonstrate that stainless steel substrates deliver improved Raman signal and enhanced spectral characterization, underscoring its potential as a cost-effective alternative to CaF2 for non-invasively monitoring cellular biochemical dynamics in translational cancer research.
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Affiliation(s)
- Giju Thomas
- Vanderbilt Biophotonics Center, Vanderbilt University, Nashville 37235, TN, USA.
- Department of Biomedical Engineering, Vanderbilt University, Nashville 37235, TN, USA
| | - Sean T Fitzgerald
- Vanderbilt Biophotonics Center, Vanderbilt University, Nashville 37235, TN, USA.
- Department of Biomedical Engineering, Vanderbilt University, Nashville 37235, TN, USA
| | - Rekha Gautam
- Tyndall National Institute, Cork, T12 R5CP, Ireland
| | - Fuyao Chen
- Yale School of Medicine, Yale University, New Haven 06510, CT, USA
| | - Ezekiel Haugen
- Vanderbilt Biophotonics Center, Vanderbilt University, Nashville 37235, TN, USA.
- Department of Biomedical Engineering, Vanderbilt University, Nashville 37235, TN, USA
| | - Pratheepa Kumari Rasiah
- Vanderbilt Biophotonics Center, Vanderbilt University, Nashville 37235, TN, USA.
- Department of Biomedical Engineering, Vanderbilt University, Nashville 37235, TN, USA
| | - Wilson R Adams
- Department of Pharmacology, Vanderbilt University, Nashville 37232, TN, USA
| | - Anita Mahadevan-Jansen
- Vanderbilt Biophotonics Center, Vanderbilt University, Nashville 37235, TN, USA.
- Department of Biomedical Engineering, Vanderbilt University, Nashville 37235, TN, USA
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5
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Ivanov IE, Yeh LH, Perez-Bermejo JA, Byrum JR, Kim JYS, Leonetti MD, Mehta SB. Correlative imaging of the spatio-angular dynamics of biological systems with multimodal instant polarization microscope. BIOMEDICAL OPTICS EXPRESS 2022; 13:3102-3119. [PMID: 35774313 PMCID: PMC9203109 DOI: 10.1364/boe.455770] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 03/22/2022] [Accepted: 03/22/2022] [Indexed: 05/29/2023]
Abstract
The spatial and angular organization of biological macromolecules is a key determinant, as well as informative readout, of their function. Correlative imaging of the dynamic spatio-angular architecture of cells and organelles is valuable, but remains challenging with current methods. Correlative imaging of spatio-angular dynamics requires fast polarization-, depth-, and wavelength-diverse measurement of intrinsic optical properties and fluorescent labels. We report a multimodal instant polarization microscope (miPolScope) that combines a broadband polarization-resolved detector, automation, and reconstruction algorithms to enable label-free imaging of phase, retardance, and orientation, multiplexed with fluorescence imaging of concentration, anisotropy, and orientation of molecules at diffraction-limited resolution and high speed. miPolScope enabled multimodal imaging of myofibril architecture and contractile activity of beating cardiomyocytes, cell and organelle architecture of live HEK293T and U2OS cells, and density and anisotropy of white and grey matter of mouse brain tissue across the visible spectrum. We anticipate these developments in joint quantitative imaging of density and anisotropy to enable new studies in tissue pathology, mechanobiology, and imaging-based screens.
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Affiliation(s)
- Ivan E. Ivanov
- Chan Zuckerberg Biohub, 499 Illinois St, San Francisco, CA 94158, USA
| | - Li-Hao Yeh
- Chan Zuckerberg Biohub, 499 Illinois St, San Francisco, CA 94158, USA
| | | | - Janie R. Byrum
- Chan Zuckerberg Biohub, 499 Illinois St, San Francisco, CA 94158, USA
| | - James Y. S. Kim
- Chan Zuckerberg Biohub, 499 Illinois St, San Francisco, CA 94158, USA
| | | | - Shalin B. Mehta
- Chan Zuckerberg Biohub, 499 Illinois St, San Francisco, CA 94158, USA
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6
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Fung AA, Hoang K, Zha H, Chen D, Zhang W, Shi L. Imaging Sub-Cellular Methionine and Insulin Interplay in Triple Negative Breast Cancer Lipid Droplet Metabolism. Front Oncol 2022; 12:858017. [PMID: 35359364 PMCID: PMC8960266 DOI: 10.3389/fonc.2022.858017] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 02/14/2022] [Indexed: 11/29/2022] Open
Abstract
Triple negative breast cancer (TNBC) is a particularly aggressive cancer subtype that is difficult to diagnose due to its discriminating epidemiology and obscure metabolome. For the first time, 3D spatial and chemometric analyses uncover the unique lipid metabolome of TNBC under the tandem modulation of two key metabolites - insulin and methionine - using non-invasive optical techniques. By conjugating heavy water (D2O) probed Raman scattering with label-free two-photon fluorescence (TPF) microscopy, we observed altered de novo lipogenesis, 3D lipid droplet morphology, and lipid peroxidation under various methionine and insulin concentrations. Quantitative interrogation of both spatial and chemometric lipid metabolism under tandem metabolite modulation confirms significant interaction of insulin and methionine, which may prove to be critical therapeutic targets, and proposes a powerful optical imaging platform with subcellular resolution for metabolic and cancer research.
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Affiliation(s)
| | | | | | | | | | - Lingyan Shi
- Department of Bioengineering, University of California San Diego, La Jolla, CA, United States
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7
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Adams WR, Gautam R, Locke A, Masson LE, Borrachero-Conejo AI, Dollinger B, Throckmorton GA, Duvall C, Jansen ED, Mahadevan-Jansen A. Visualizing Lipid Dynamics Role in Infrared Neural Stimulation using Stimulated Raman Scattering. Biophys J 2022; 121:1525-1540. [PMID: 35276133 PMCID: PMC9072573 DOI: 10.1016/j.bpj.2022.03.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 10/14/2021] [Accepted: 03/04/2022] [Indexed: 11/02/2022] Open
Abstract
Infrared neural stimulation, or INS, uses pulsed infrared light to yield label-free neural stimulation with broad experimental and translational utility. Despite its robust demonstration, INS's mechanistic and biophysical underpinnings have been the subject of debate for more than a decade. The role of lipid membrane thermodynamics appears to play an important role in how fast IR-mediated heating nonspecifically drives action potential generation. Direct observation of lipid membrane dynamics during INS remains to be shown in a live neural model system. We used hyperspectral stimulated Raman scattering (hsSRS) microscopy to study biochemical signatures of high-speed vibrational dynamics underlying INS in a live neural cell culture model. Findings suggest that lipid bilayer structural changes are occurring during INS in vitro in NG108-15 neuroglioma cells. Lipid-specific signatures of cell SRS spectra varied with stimulation energy and radiant exposure. Spectroscopic observations agree with high-speed ratiometric fluorescence imaging of a conventional lipophilic membrane structure reporter, di-4-ANNEPS. Overall, the presented findings support the hypothesis that INS causes changes in the lipid membrane of neural cells by changing lipid membrane packing order. Furthermore, this work highlights the potential of hsSRS as a method to study biophysical and biochemical dynamics safely in live cells.
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Affiliation(s)
- Wilson R Adams
- Dept. of Biomedical Engineering, Vanderbilt University, Nashville, TN, USA
| | - Rekha Gautam
- Dept. of Biomedical Engineering, Vanderbilt University, Nashville, TN, USA
| | - Andrea Locke
- Dept. of Biomedical Engineering, Vanderbilt University, Nashville, TN, USA
| | - Laura E Masson
- Dept. of Biomedical Engineering, Vanderbilt University, Nashville, TN, USA
| | | | - Bryan Dollinger
- Dept. of Biomedical Engineering, Vanderbilt University, Nashville, TN, USA
| | | | - Craig Duvall
- Dept. of Biomedical Engineering, Vanderbilt University, Nashville, TN, USA
| | - E Duco Jansen
- Dept. of Biomedical Engineering, Vanderbilt University, Nashville, TN, USA; Dept. of Neurosurgery, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Anita Mahadevan-Jansen
- Dept. of Biomedical Engineering, Vanderbilt University, Nashville, TN, USA; Dept. of Neurosurgery, Vanderbilt University Medical Center, Nashville, TN, USA.
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8
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Zhang Y, Kang L, Wong IHM, Dai W, Li X, Chan RCK, Hsin MKY, Wong TTW. High-Throughput, Label-Free and Slide-Free Histological Imaging by Computational Microscopy and Unsupervised Learning. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2102358. [PMID: 34747142 PMCID: PMC8805566 DOI: 10.1002/advs.202102358] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 10/03/2021] [Indexed: 06/13/2023]
Abstract
Rapid and high-resolution histological imaging with minimal tissue preparation has long been a challenging and yet captivating medical pursuit. Here, the authors propose a promising and transformative histological imaging method, termed computational high-throughput autofluorescence microscopy by pattern illumination (CHAMP). With the assistance of computational microscopy, CHAMP enables high-throughput and label-free imaging of thick and unprocessed tissues with large surface irregularity at an acquisition speed of 10 mm2 /10 s with 1.1-µm lateral resolution. Moreover, the CHAMP image can be transformed into a virtually stained histological image (Deep-CHAMP) through unsupervised learning within 15 s, where significant cellular features are quantitatively extracted with high accuracy. The versatility of CHAMP is experimentally demonstrated using mouse brain/kidney and human lung tissues prepared with various clinical protocols, which enables a rapid and accurate intraoperative/postoperative pathological examination without tissue processing or staining, demonstrating its great potential as an assistive imaging platform for surgeons and pathologists to provide optimal adjuvant treatment.
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Affiliation(s)
- Yan Zhang
- Translational and Advanced Bioimaging Laboratory, Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Kowloon, Hong Kong, China
| | - Lei Kang
- Translational and Advanced Bioimaging Laboratory, Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Kowloon, Hong Kong, China
| | - Ivy H M Wong
- Translational and Advanced Bioimaging Laboratory, Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Kowloon, Hong Kong, China
| | - Weixing Dai
- Translational and Advanced Bioimaging Laboratory, Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Kowloon, Hong Kong, China
| | - Xiufeng Li
- Translational and Advanced Bioimaging Laboratory, Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Kowloon, Hong Kong, China
| | - Ronald C K Chan
- Department of Anatomical and Cellular Pathology, The Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Michael K Y Hsin
- Department of Cardiothoracic Surgery, Queen Mary Hospital, Kowloon, Hong Kong, China
| | - Terence T W Wong
- Translational and Advanced Bioimaging Laboratory, Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Kowloon, Hong Kong, China
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9
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Fuchs A, Mannhardt P, Hirschle P, Wang H, Zaytseva I, Ji Z, Yaghi O, Wuttke S, Ploetz E. Single Crystals Heterogeneity Impacts the Intrinsic and Extrinsic Properties of Metal-Organic Frameworks. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2104530. [PMID: 34806239 DOI: 10.1002/adma.202104530] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Revised: 09/03/2021] [Indexed: 06/13/2023]
Abstract
At present, an enormous characterization gap exists between the study of the crystal structure of a material and its bulk properties. Individual particles falling within this gap cannot be fully characterized in a correlative manner by current methods. The authors address this problem by exploiting the noninvasive nature of optical microscopy and spectroscopy for the correlative analysis of metal-organic framework particles in situ. They probe the intrinsic as well as extrinsic properties in a correlated manner. The authors show that the crystal shape of MIL-88A strongly impacts its optical absorption. Furthermore, the question of how homogeneously water is distributed and adsorbed within one of the most promising materials for harvesting water from humid air, MOF-801, is addressed. The results demonstrate the considerable importance of the particle level and how it can affect the property of the material.
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Affiliation(s)
- Adrian Fuchs
- Department of Chemistry and Center for NanoScience (CeNS), LMU Munich, 81377, Munich, Germany
| | - Petra Mannhardt
- Department of Chemistry and Center for NanoScience (CeNS), LMU Munich, 81377, Munich, Germany
| | - Patrick Hirschle
- Department of Chemistry and Center for NanoScience (CeNS), LMU Munich, 81377, Munich, Germany
| | - Haoze Wang
- Department of Chemistry, University of California-Berkeley, Materials Sciences Division, Lawrence Berkeley National Laboratory, Kavli Energy NanoSciences Institute at Berkeley, and Berkeley Global Science Institute, Berkeley, CA, 94720, USA
| | - Irina Zaytseva
- Department of Chemistry and Center for NanoScience (CeNS), LMU Munich, 81377, Munich, Germany
| | - Zhe Ji
- Department of Chemistry, University of California-Berkeley, Materials Sciences Division, Lawrence Berkeley National Laboratory, Kavli Energy NanoSciences Institute at Berkeley, and Berkeley Global Science Institute, Berkeley, CA, 94720, USA
- Department of Chemistry, Stanford University, Stanford, CA, 94305, USA
| | - Omar Yaghi
- Department of Chemistry, University of California-Berkeley, Materials Sciences Division, Lawrence Berkeley National Laboratory, Kavli Energy NanoSciences Institute at Berkeley, and Berkeley Global Science Institute, Berkeley, CA, 94720, USA
- UC Berkeley-KACST Joint Center of Excellence for Nanomaterials for Clean Energy Applications, King Abdulaziz City for Science and Technology, Riyadh, 11442, Saudi Arabia
| | - Stefan Wuttke
- Department of Chemistry and Center for NanoScience (CeNS), LMU Munich, 81377, Munich, Germany
- BCMaterials, Basque Center for Materials, UPV/EHU Science Park, Leioa, 48940, Spain
- Ikerbasque, Basque Foundation for Science, Bilbao, 48013, Spain
| | - Evelyn Ploetz
- Department of Chemistry and Center for NanoScience (CeNS), LMU Munich, 81377, Munich, Germany
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10
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Abstract
Nonlinear optical (NLO) microscopy relies on multiple light-matter interactions to provide unique contrast mechanisms and imaging capabilities that are inaccessible to traditional linear optical imaging approaches, making them versatile tools to understand a wide range of complex systems. However, the strong excitation fields that are necessary to drive higher-order optical processes efficiently are often responsible for photobleaching, photodegradation, and interruption in many systems of interest. This is especially true for imaging living biological samples over prolonged periods of time or in accessing intrinsic dynamics of electronic excited-state processes in spatially heterogeneous materials. This perspective outlines some of the key limitations of two NLO imaging modalities implemented in our lab and highlights the unique potential afforded by the quantum properties of light, especially entangled two-photon absorption based NLO spectroscopy and microscopy. We further review some of the recent exciting advances in this emerging filed and highlight some major challenges facing the realization of quantum-light-enabled NLO imaging modalities.
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Affiliation(s)
- Ying-Zhong Ma
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Benjamin Doughty
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
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