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Schmallegger M, Grützmacher H, Gescheidt G. Bis(acyl)phosphine Oxides as Stoichiometric Photo‐Reductants for Copper Nanoparticle Synthesis: Efficiency and Kinetics. CHEMPHOTOCHEM 2022. [DOI: 10.1002/cptc.202200155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Max Schmallegger
- Graz University of Technology: Technische Universitat Graz Institut of Physical and Theoretical Chemistry Stremayrgasse 9 8010 Graz AUSTRIA
| | - Hansjörg Grützmacher
- ETH Zürich: Eidgenossische Technische Hochschule Zurich Department of Chemistry and Applied Biosciences Vladimir-Prelog Weg 1 8093 Zürich SWITZERLAND
| | - Georg Gescheidt
- Graz University of Technology: Technische Universitat Graz Institute of Physical and Theoretical Chemistry Stremayrgasse 9 8010 Graz AUSTRIA
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Venzac B, Deng S, Mahmoud Z, Lenferink A, Costa A, Bray F, Otto C, Rolando C, Le Gac S. PDMS Curing Inhibition on 3D-Printed Molds: Why? Also, How to Avoid It? Anal Chem 2021; 93:7180-7187. [PMID: 33961394 PMCID: PMC8153387 DOI: 10.1021/acs.analchem.0c04944] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Three-dimensional (3D)-printing techniques such as stereolithography (SLA) are currently gaining momentum for the production of miniaturized analytical devices and molds for soft lithography. However, most commercially available SLA resins inhibit polydimethylsiloxane (PDMS) curing, impeding reliable replication of the 3D-printed structures in this elastomeric material. Here, we report a systematic study, using 16 commercial resins, to identify a fast and straightforward treatment of 3D-printed structures and to support accurate PDMS replication using UV and/or thermal post-curing. In-depth analysis using Raman spectroscopy, nuclear magnetic resonance, and high-resolution mass spectrometry revealed that phosphine oxide-based photo-initiators, leaching out of the 3D-printed structures, are poisoning the Pt-based PDMS catalyst. Yet, upon UV and/or thermal treatments, photo-initiators were both eliminated and recombined into high molecular weight species that were sequestered in the molds.
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Affiliation(s)
- Bastien Venzac
- Applied Microfluidics for BioEngineering Research, MESA+ Institute for Nanotechnology & TechMed Centre, University of Twente, 7500AE Enschede, The Netherlands
| | - Shanliang Deng
- Applied Microfluidics for BioEngineering Research, MESA+ Institute for Nanotechnology & TechMed Centre, University of Twente, 7500AE Enschede, The Netherlands
| | - Ziad Mahmoud
- Université Lille, CNRS, USR 3290, MSAP, Miniaturisation pour la Synthèse l'Analyse et la Protéomique, 59000 Lille, France
| | - Aufried Lenferink
- Medical Cell BioPhysics, TechMed Centre, University of Twente, 7500AE Enschede, The Netherlands
| | - Aurélie Costa
- Université Lille, CNRS, USR 3290, MSAP, Miniaturisation pour la Synthèse l'Analyse et la Protéomique, 59000 Lille, France
| | - Fabrice Bray
- Université Lille, CNRS, USR 3290, MSAP, Miniaturisation pour la Synthèse l'Analyse et la Protéomique, 59000 Lille, France
| | - Cees Otto
- Medical Cell BioPhysics, TechMed Centre, University of Twente, 7500AE Enschede, The Netherlands
| | - Christian Rolando
- Université Lille, CNRS, USR 3290, MSAP, Miniaturisation pour la Synthèse l'Analyse et la Protéomique, 59000 Lille, France.,Shrieking Sixties, 59650 Villeneuve-d'Ascq, France
| | - Séverine Le Gac
- Applied Microfluidics for BioEngineering Research, MESA+ Institute for Nanotechnology & TechMed Centre, University of Twente, 7500AE Enschede, The Netherlands
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Pearce KG, Crossley IR. Diphosphametacyclophanes: Structural and Electronic Influences of Substituent Variation within a Family of Bis(diketophosphanyl) Macrocycles. J Org Chem 2020; 85:14697-14707. [DOI: 10.1021/acs.joc.0c01950] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kyle G. Pearce
- Department of Chemistry, University of Sussex, Falmer, Brighton BN1 9QJ, United Kingdom
| | - Ian R. Crossley
- Department of Chemistry, University of Sussex, Falmer, Brighton BN1 9QJ, United Kingdom
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Pearce KG, Simenok V, Crossley IR. Phosphacycloalkyldiones: synthesis and coordinative behaviour of 6- and 7-member cyclic diketophosphanyls. Dalton Trans 2020; 49:5482-5492. [DOI: 10.1039/d0dt00864h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Condensation of glutaryl and adipoyl chlorides with bis(silyl)phosphanes RP(SiMe3)2 (R = Me, nBu, tBu, Ph, Mes) affords the conformationally fluxional phosphacycloalkyldiones (CH2)n(CO)2PR (n = 3, 4); their coordination behaviour is explored.
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