1
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Ghosh A, Kozlowski K, Steele TWJ. Synthesis and Evaluation of Metal Lipoate Adhesives. Polymers (Basel) 2023; 15:2921. [PMID: 37447566 DOI: 10.3390/polym15132921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 06/26/2023] [Accepted: 06/29/2023] [Indexed: 07/15/2023] Open
Abstract
The development of new bioadhesives with integrated properties remains an unmet clinical need to replace staples or sutures. Current bioadhesives do not allow electronic activation, which would allow expansion into laparoscopic and robotic surgeries. To address this deficiency, voltage-activated adhesives have been developed on both carbene- and catechol-based chemical precursors. Herein, a third platform of voltage-activated adhesive is evaluated based on lipoic acid, a non-toxic dithiolane found in aerobic metabolism and capable of ring-opening polymerization. The electro-rheological and adhesive properties of lithium, sodium, and potassium salts of lipoic acid are applied for wet tissue adhesion. At ambient conditions, potassium lipoate displays higher storage modulus than lithium or sodium salt under similar conditions. Voltage stimulation significantly improves gelation kinetics to Na- and K-lipoates, while Li-lipoate is found to not require voltage stimulation for gelation. Lap shear adhesion strength on wetted collagen substrates reveals that the synthetic metal lipoates have comparable adhesion strength to fibrin sealants without viral or ethical risks.
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Affiliation(s)
- Animesh Ghosh
- School of Materials Science and Engineering (MSE), Nanyang Technological University (NTU), Singapore 639798, Singapore
| | - Konrad Kozlowski
- School of Materials Science and Engineering (MSE), Nanyang Technological University (NTU), Singapore 639798, Singapore
| | - Terry W J Steele
- School of Materials Science and Engineering (MSE), Nanyang Technological University (NTU), Singapore 639798, Singapore
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2
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Musolino SF, Mahbod M, Nazir R, Bi L, Graham HA, Milani AS, Wulff JE. Electronically optimized diazirine-based polymer crosslinkers. Polym Chem 2022. [DOI: 10.1039/d2py00687a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Electronically optimized bis-diazirine crosslinkers allow aliphatic polymers to be crosslinked with up to 10-fold improved efficacy, relative to earlier designs. Activation is achieved using modest temperatures or through UV or visible light.
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Affiliation(s)
- Stefania F. Musolino
- Department of Chemistry, University of Victoria, Victoria, British Columbia V8W 3V6, Canada
| | - Mahshid Mahbod
- Materials and Manufacturing Research Institute (MMRI), University of British Columbia, Kelowna, British Columbia V1V 1V7, Canada
| | - Rashid Nazir
- Department of Chemistry, University of Victoria, Victoria, British Columbia V8W 3V6, Canada
| | - Liting Bi
- Department of Chemistry, University of Victoria, Victoria, British Columbia V8W 3V6, Canada
| | - Hamish A. Graham
- Department of Chemistry, University of Victoria, Victoria, British Columbia V8W 3V6, Canada
| | - Abbas S. Milani
- Materials and Manufacturing Research Institute (MMRI), University of British Columbia, Kelowna, British Columbia V1V 1V7, Canada
| | - Jeremy E. Wulff
- Department of Chemistry, University of Victoria, Victoria, British Columbia V8W 3V6, Canada
- Centre for Advanced Materials and Related Technology (CAMTEC), University of Victoria, Victoria, British Columbia V8W 2Y2, Canada
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3
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Singh M, Solic I, Steele TWJ. Hydrophobic Bioadhesive Composites for Human Motion Detection. ACS Macro Lett 2021; 10:1353-1358. [PMID: 35549014 DOI: 10.1021/acsmacrolett.1c00559] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Conductive hydrogels are rapidly rising as sensing materials for bioelectronics applications, but lack mechanical and adhesion strength due to their excess water content. We propose a diazirine-grafted polycaprolactone adhesive (CaproGlu)/carbon nanotubes (CNTs) composite that can provide wet adhesion and strong mechanical properties at the tissue-machine interface. The introduced CNTs not only reinforced the CaproGlu, but also formed electrically conducting pathways. The CaproGlu composites exhibited conductivity of 0.1 S m-1 and a charge storage capacity of 5 μC cm-2. The resulting composites are biocompatible and can be used as strain sensors to detect mechanical deformations.
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Affiliation(s)
- Manisha Singh
- NTU-Northwestern Institute for Nanomedicine (NNIN), Interdisciplinary Graduate School (IGS), Nanyang Technological University (NTU), Singapore 637553, Singapore.,School of Materials Science and Engineering (MSE), Nanyang Technological University (NTU), Singapore 639798, Singapore
| | - Ivan Solic
- School of Materials Science and Engineering (MSE), Nanyang Technological University (NTU), Singapore 639798, Singapore
| | - Terry W J Steele
- NTU-Northwestern Institute for Nanomedicine (NNIN), Interdisciplinary Graduate School (IGS), Nanyang Technological University (NTU), Singapore 637553, Singapore.,School of Materials Science and Engineering (MSE), Nanyang Technological University (NTU), Singapore 639798, Singapore
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4
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Wanasingha N, Dutta NK, Choudhury NR. Emerging bioadhesives: from traditional bioactive and bioinert to a new biomimetic protein-based approach. Adv Colloid Interface Sci 2021; 296:102521. [PMID: 34534751 DOI: 10.1016/j.cis.2021.102521] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 09/04/2021] [Accepted: 09/04/2021] [Indexed: 12/29/2022]
Abstract
Bioadhesives have reached significant milestones over the past two decades. Research has shown not only to produce adhesives capable of adhering to dry tissue but recently wet tissue as well. However, most bioadhesives developed have exhibited high adhesion strength yet lack other properties required for versatility in application, such as elasticity, biocompatibility and biodegradability. Adapting from limitations met from early bioadhesives and meeting the current demand allows novel bioadhesives to reach new milestones for the future. In this review, we overview the progression and variations of bioadhesives, current trends, characterisation techniques and conclude with future perspectives for bioadhesives for tissue engineering applications.
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Affiliation(s)
- Nisal Wanasingha
- School of Engineering, RMIT University, Melbourne, VIC 3000, Australia
| | - Naba K Dutta
- School of Engineering, RMIT University, Melbourne, VIC 3000, Australia
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5
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Musolino SF, Pei Z, Bi L, DiLabio GA, Wulff JE. Structure-function relationships in aryl diazirines reveal optimal design features to maximize C-H insertion. Chem Sci 2021; 12:12138-12148. [PMID: 34667579 PMCID: PMC8457397 DOI: 10.1039/d1sc03631a] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2021] [Accepted: 08/10/2021] [Indexed: 12/19/2022] Open
Abstract
Diazirine reagents allow for the ready generation of carbenes upon photochemical, thermal, or electrical stimulation. Because carbenes formed in this way can undergo rapid insertion into any nearby C-H, O-H or N-H bond, molecules that encode diazirine functions have emerged as privileged tools in applications ranging from biological target identification and proteomics through to polymer crosslinking and adhesion. Here we use a combination of experimental and computational methods to complete the first comprehensive survey of diazirine structure-function relationships, with a particular focus on thermal activation methods. We reveal a striking ability to vary the activation energy and activation temperature of aryl diazirines through the rational manipulation of electronic properties. Significantly, we show that electron-rich diazirines have greatly enhanced efficacy toward C-H insertion, under both thermal and photochemical activation conditions. We expect these results to lead to significant improvements in diazirine-based chemical probes and polymer crosslinkers.
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Affiliation(s)
| | - Zhipeng Pei
- Department of Chemistry, University of British Columbia Kelowna BC V1V-1V7 Canada
| | - Liting Bi
- Department of Chemistry, University of Victoria Victoria BC V8W-3V6 Canada
| | - Gino A DiLabio
- Department of Chemistry, University of British Columbia Kelowna BC V1V-1V7 Canada
| | - Jeremy E Wulff
- Department of Chemistry, University of Victoria Victoria BC V8W-3V6 Canada
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6
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Djordjevic I, Wicaksono G, Šolić I, Singh J, Kaku TS, Lim S, Ang EWJ, Blancafort L, Steele TWJ. Rapid Activation of Diazirine Biomaterials with the Blue Light Photocatalyst. ACS APPLIED MATERIALS & INTERFACES 2021; 13:36839-36848. [PMID: 34342218 DOI: 10.1021/acsami.1c08581] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Carbene-based macromolecules are an emerging new stimuli-sensitive class of biomaterials that avoid the impediments of free radical polymerization but maintain a rapid liquid-to-biorubber transition. Activation of diazirine-grafted polycaprolactone polyol (CaproGlu) is limited to UVA wavelengths that have tissue exposure constraints and limited light intensities. For the first time, UVA is circumvented with visible light-emitting diodes at 445 nm (blue) to rapidly activate diazirine-to-carbene covalent cross-linking. Iridium photocatalysts serve to initiate diazirine, despite having little to no absorption at 445 nm. CaproGlu's liquid organic matrix dissolves the photocatalyst with no solvents required, creating a light transparent matrix. Considerable differences in cross-linking chemistry are observed in UVA vs visible/photocatalyst formulations. Empirical analysis and theoretical calculations reveal a more efficient conversion of diazirine directly to carbene with no diazoalkane intermediate detected. Photorheometry results demonstrate a correlation between shear moduli, joules light dose, and the lower limits of photocatalyst concentration required for the liquid-to-biorubber transition. Adhesion strength on ex vivo hydrated tissues exceeds that of cyanoacrylates, with a fixation strength of up to 20 kg·f·cm2. Preliminary toxicity assessment on leachates and materials directly in contact with mammalian fibroblast cells displays no signs of fibroblast cytotoxicity.
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Affiliation(s)
- Ivan Djordjevic
- School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798
| | - Gautama Wicaksono
- School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798
| | - Ivan Šolić
- School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798
| | - Juhi Singh
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Block N1.3, 70 Nanyang Drive, Singapore 637457
- NTU Institute for Health Technologies, Interdisciplinary Graduate Program, Nanyang Technological University, 61 Nanyang Drive, Singapore 637335
| | - Tanvi Sushil Kaku
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Block N1.3, 70 Nanyang Drive, Singapore 637457
| | - Sierin Lim
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Block N1.3, 70 Nanyang Drive, Singapore 637457
| | - Elwin Wei Jian Ang
- School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798
| | - Lluís Blancafort
- Departament de Química and Institut de Química Computacional i Catàlisi. Facultat de Ciències, Universitat de Girona, C/M.A. Capmany 69, Girona 17003, Spain
| | - Terry W J Steele
- School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798
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7
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Ambrosi A, Singh M, Webster RD, Steele TWJ. Precise Control of Diazirine Reduction to Tune the Mechanical Properties of Electrocuring Adhesives. ChemElectroChem 2021. [DOI: 10.1002/celc.202100594] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Adriano Ambrosi
- Division of Chemistry & Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE Shandong Key Laboratory of Biochemical Analysis Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong College of Chemistry and Molecular Engineering Qingdao University of Science and Technology Qingdao 266042 P. R. China
| | - Manisha Singh
- NTU-Northwestern Institute for Nanomedicine (NNIN) Interdisciplinary Graduate School (IGS) Nanyang Technological University Singapore 637553 Singapore
- School of Materials Science and Engineering Nanyang Technological University Singapore 639798 Singapore
| | - Richard D. Webster
- Division of Chemistry & Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
| | - Terry W. J. Steele
- NTU-Northwestern Institute for Nanomedicine (NNIN) Interdisciplinary Graduate School (IGS) Nanyang Technological University Singapore 637553 Singapore
- School of Materials Science and Engineering Nanyang Technological University Singapore 639798 Singapore
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8
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Singh M, Varela CE, Whyte W, Horvath MA, Tan NCS, Ong CB, Liang P, Schermerhorn ML, Roche ET, Steele TWJ. Minimally invasive electroceutical catheter for endoluminal defect sealing. SCIENCE ADVANCES 2021; 7:eabf6855. [PMID: 33811080 PMCID: PMC11057783 DOI: 10.1126/sciadv.abf6855] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Accepted: 02/16/2021] [Indexed: 06/12/2023]
Abstract
Surgical repair of lumen defects is associated with periprocedural morbidity and mortality. Endovascular repair with tissue adhesives may reduce host tissue damage, but current bioadhesive designs do not support minimally invasive deployment. Voltage-activated tissue adhesives offer a new strategy for endoluminal repair. To facilitate the clinical translation of voltage-activated adhesives, an electroceutical patch (ePATCH) paired with a minimally invasive catheter with retractable electrodes (CATRE) is challenged against the repair of in vivo and ex vivo lumen defects. The ePATCH/CATRE platform demonstrates the sealing of lumen defects up to 2 millimeters in diameter on wet tissue substrates. Water-tight seals are flexible and resilient, withstanding over 20,000 physiological relevant stress/strain cycles. No disruption to electrical signals was observed when the ePATCH was electrically activated on the beating heart. The ePATCH/CATRE platform has diverse potential applications ranging from endovascular treatment of pseudo-aneurysms/fistulas to bioelectrodes toward electrophysiological mapping.
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Affiliation(s)
- Manisha Singh
- NTU-Northwestern Institute for Nanomedicine (NNIN), Interdisciplinary Graduate School (IGS), Nanyang Technological University (NTU), 50 Nanyang Drive, Singapore 637553, Singapore
- School of Materials Science and Engineering (MSE), Nanyang Technological University (NTU), Singapore 639798, Singapore
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Claudia E Varela
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Harvard-MIT Program in Health Sciences and Technology, Cambridge, MA 02139, USA
| | - William Whyte
- Harvard-MIT Program in Health Sciences and Technology, Cambridge, MA 02139, USA
| | - Markus A Horvath
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Harvard-MIT Program in Health Sciences and Technology, Cambridge, MA 02139, USA
| | - Nigel C S Tan
- School of Materials Science and Engineering (MSE), Nanyang Technological University (NTU), Singapore 639798, Singapore
| | - Chee Bing Ong
- Histopathology/Advanced Molecular Pathology Lab, Institute of Molecular and Cell Biology (IMCB), Agency for Science, Technology, and Research, 61 Biopolis Drive, Singapore 138673, Singapore
| | - Patric Liang
- Division of Vascular and Endovascular Surgery, Department of Surgery, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA 02215, USA
| | - Marc L Schermerhorn
- Division of Vascular and Endovascular Surgery, Department of Surgery, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA 02215, USA
| | - Ellen T Roche
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Harvard Medical School, Boston, MA 02115, USA
| | - Terry W J Steele
- NTU-Northwestern Institute for Nanomedicine (NNIN), Interdisciplinary Graduate School (IGS), Nanyang Technological University (NTU), 50 Nanyang Drive, Singapore 637553, Singapore.
- School of Materials Science and Engineering (MSE), Nanyang Technological University (NTU), Singapore 639798, Singapore
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9
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Simhadri C, Bi L, Lepage ML, Takaffoli M, Pei Z, Musolino SF, Milani AS, DiLabio GA, Wulff JE. Flexible polyfluorinated bis-diazirines as molecular adhesives. Chem Sci 2021; 12:4147-4153. [PMID: 34163687 PMCID: PMC8179497 DOI: 10.1039/d0sc06283a] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 01/29/2021] [Indexed: 12/19/2022] Open
Abstract
Motivated by a desire to develop flexible covalent adhesives that afford some of the same malleability in the adhesive layer as traditional polymer-based adhesives, we designed and synthesized two flexible, highly fluorinated bis-diazirines. Both molecules are shown to function as effective crosslinkers for polymer materials, and to act as strong adhesives when painted between two polymer objects of low surface energy, prior to thermal activation. Data obtained from lap-shear experiments suggests that greater molecular flexibility is correlated with improved mechanical compliance in the adhesive layer.
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Affiliation(s)
| | - Liting Bi
- Department of Chemistry, University of Victoria Victoria BC V8W 3V6 Canada
| | - Mathieu L Lepage
- Department of Chemistry, University of Victoria Victoria BC V8W 3V6 Canada
| | - Mahdi Takaffoli
- Materials and Manufacturing Research Institute, University of British Columbia Kelowna BC V1V 1V7 Canada
| | - Zhipeng Pei
- Department of Chemistry, University of British Columbia Kelowna BC V1V 1V7 Canada
| | | | - Abbas S Milani
- Materials and Manufacturing Research Institute, University of British Columbia Kelowna BC V1V 1V7 Canada
| | - Gino A DiLabio
- Department of Chemistry, University of British Columbia Kelowna BC V1V 1V7 Canada
| | - Jeremy E Wulff
- Department of Chemistry, University of Victoria Victoria BC V8W 3V6 Canada
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10
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Photocurable platelet rich plasma bioadhesives. Acta Biomater 2020; 117:133-141. [PMID: 32966923 DOI: 10.1016/j.actbio.2020.09.030] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 09/15/2020] [Accepted: 09/15/2020] [Indexed: 02/07/2023]
Abstract
Closure of wounds with tissue adhesives has many advantages over sutures, but existing synthetic adhesives are toxic and have poor workability. Blood-derived adhesives display complete resorption but have adhesion too weak for reliable wound dressings. We propose a semi-synthetic design that combines the positive attributes of synthetic and blood-derived tissue adhesives. PAMAM-g-diazirine (PDz) is a rapidly gelling bioadhesive miscible in both aqueous and organic solvents. PDz blended with platelet-rich plasma (PRP) forms PDz/PRP composite, a semi-synthetic formulation that combines PDz's wet tissue adhesion with PRP's potent wound healing properties. Light-activated PDz/PRP bioadhesive composite has similar elasticity to soft tissues and behaves as an induced hemostat-an unmet clinical need for rapid wound dressings. PDz/PRP composite applied to in-vivo full-thickness wounds observed a 25% reduction in inflammation, as assessed by the host-cell response.
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11
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Tan NCS, Ghosh A, Steele TWJ. Structure–Activity Relationships of Voltaglue Organic Blends. Macromol Rapid Commun 2020; 41:e2000188. [DOI: 10.1002/marc.202000188] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 05/22/2020] [Indexed: 01/19/2023]
Affiliation(s)
- Nigel C. S. Tan
- School of Materials Science and Engineering (MSE) Nanyang Technological University (NTU) Singapore 639798 Singapore
| | - Animesh Ghosh
- School of Materials Science and Engineering (MSE) Nanyang Technological University (NTU) Singapore 639798 Singapore
| | - Terry W. J. Steele
- School of Materials Science and Engineering (MSE) Nanyang Technological University (NTU) Singapore 639798 Singapore
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12
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Djordjevic I, Wicaksono G, Solic I, Steele TW. Diazoalkane decay kinetics from UVA-active protein labelling molecules: Trifluoromethyl phenyl diazirines. RESULTS IN CHEMISTRY 2020. [DOI: 10.1016/j.rechem.2020.100066] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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