101
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Trobe M, Burke MD. Die molekulare industrielle Revolution: zur automatisierten Synthese organischer Verbindungen. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201710482] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Melanie Trobe
- Department of Chemistry University of Illinois Urbana-Champaign 600 S. Mathews, 454 RAL Urbana-Champaign IL 61801 USA
| | - Martin D. Burke
- Department of Chemistry University of Illinois Urbana-Champaign 600 S. Mathews, 454 RAL Urbana-Champaign IL 61801 USA
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102
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Grzybowski BA, Fitzner K, Paczesny J, Granick S. From dynamic self-assembly to networked chemical systems. Chem Soc Rev 2018; 46:5647-5678. [PMID: 28703815 DOI: 10.1039/c7cs00089h] [Citation(s) in RCA: 192] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Although dynamic self-assembly, DySA, is a relatively new area of research, the past decade has brought numerous demonstrations of how various types of components - on scales from (macro)molecular to macroscopic - can be arranged into ordered structures thriving in non-equilibrium, steady states. At the same time, none of these dynamic assemblies has so far proven practically relevant, prompting questions about the field's prospects and ultimate objectives. The main thesis of this Review is that formation of dynamic assemblies cannot be an end in itself - instead, we should think more ambitiously of using such assemblies as control elements (reconfigurable catalysts, nanomachines, etc.) of larger, networked systems directing sequences of chemical reactions or assembly tasks. Such networked systems would be inspired by biology but intended to operate in environments and conditions incompatible with living matter (e.g., in organic solvents, elevated temperatures, etc.). To realize this vision, we need to start considering not only the interactions mediating dynamic self-assembly of individual components, but also how components of different types could coexist and communicate within larger, multicomponent ensembles. Along these lines, the review starts with the discussion of the conceptual foundations of self-assembly in equilibrium and non-equilibrium regimes. It discusses key examples of interactions and phenomena that can provide the basis for various DySA modalities (e.g., those driven by light, magnetic fields, flows, etc.). It then focuses on the recent examples where organization of components in steady states is coupled to other processes taking place in the system (catalysis, formation of dynamic supramolecular materials, control of chirality, etc.). With these examples of functional DySA, we then look forward and consider conditions that must be fulfilled to allow components of multiple types to coexist, function, and communicate with one another within the networked DySA systems of the future. As the closing examples show, such systems are already appearing heralding new opportunities - and, to be sure, new challenges - for DySA research.
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Affiliation(s)
- Bartosz A Grzybowski
- IBS Center for Soft and Living Matter, UNIST, UNIST-gil 50, Eonyang-eup, Ulju-gun, Ulsan, 689-798, Republic of Korea.
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103
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Baumgartner LM, Coley CW, Reizman BJ, Gao KW, Jensen KF. Optimum catalyst selection over continuous and discrete process variables with a single droplet microfluidic reaction platform. REACT CHEM ENG 2018. [DOI: 10.1039/c8re00032h] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A mixed-integer nonlinear program (MINLP) algorithm to optimize catalyst turnover number (TON) and product yield by simultaneously modulating discrete variables—catalyst types—and continuous variables—temperature, residence time, and catalyst loading—was implemented and validated.
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Affiliation(s)
| | - Connor W. Coley
- Department of Chemical Engineering
- Massachusetts Institute of Technology
- Cambridge
- USA
| | - Brandon J. Reizman
- Department of Chemical Engineering
- Massachusetts Institute of Technology
- Cambridge
- USA
| | - Kevin W. Gao
- Department of Chemical Engineering
- Massachusetts Institute of Technology
- Cambridge
- USA
- Department of Chemical and Biomolecular Engineering
| | - Klavs F. Jensen
- Department of Chemical Engineering
- Massachusetts Institute of Technology
- Cambridge
- USA
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104
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Abstract
The development of batch–flow hybrid processes is becoming an attractive prospect through which chemists can make use of the best aspects of both technologies.
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Affiliation(s)
- N. C. Neyt
- Department of Natural and Agricultural Sciences
- University of Pretoria
- Pretoria
- South Africa
| | - D. L. Riley
- Department of Natural and Agricultural Sciences
- University of Pretoria
- Pretoria
- South Africa
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105
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Giraudeau P, Felpin FX. Flow reactors integrated with in-line monitoring using benchtop NMR spectroscopy. REACT CHEM ENG 2018. [DOI: 10.1039/c8re00083b] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The state-of-the-art flow reactors integrated with in-line benchtop NMR are thoroughly discussed with highlights on the strengths and weaknesses of this emerging technology.
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Affiliation(s)
- Patrick Giraudeau
- UFR des Sciences et des Techniques
- CNRS UMR 6230
- CEISAM
- Université de Nantes
- 44322 Nantes Cedex 3
| | - François-Xavier Felpin
- UFR des Sciences et des Techniques
- CNRS UMR 6230
- CEISAM
- Université de Nantes
- 44322 Nantes Cedex 3
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106
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Cherkasov N, Bai Y, Expósito AJ, Rebrov EV. OpenFlowChem – a platform for quick, robust and flexible automation and self-optimisation of flow chemistry. REACT CHEM ENG 2018. [DOI: 10.1039/c8re00046h] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
OpenFlowChem – an open-access platform for automation of process control and monitoring optimised for flexibility.
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Affiliation(s)
- Nikolay Cherkasov
- School of Engineering
- University of Warwick
- Coventry CV4 7AL
- UK
- Stoli Catalysts Ltd
| | - Yang Bai
- Stoli Catalysts Ltd
- Coventry CV3 4DS
- UK
| | | | - Evgeny V. Rebrov
- School of Engineering
- University of Warwick
- Coventry CV4 7AL
- UK
- Stoli Catalysts Ltd
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107
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Glotz G, Kappe CO. Design and construction of an open source-based photometer and its applications in flow chemistry. REACT CHEM ENG 2018. [DOI: 10.1039/c8re00070k] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
An inexpensive and easy to build photometer using a movable measuring cell for flow chemistry applications was designed with temporal resolution down to 1 ms.
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Affiliation(s)
- Gabriel Glotz
- Center for Continuous Flow Synthesis and Processing (CC FLOW)
- Research Center Pharmaceutical Engineering GmbH (RCPE)
- Graz
- Austria
- Institute of Chemistry
| | - C. Oliver Kappe
- Center for Continuous Flow Synthesis and Processing (CC FLOW)
- Research Center Pharmaceutical Engineering GmbH (RCPE)
- Graz
- Austria
- Institute of Chemistry
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108
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Glotz G, Lebl R, Dallinger D, Kappe CO. Integration of Bromine and Cyanogen Bromide Generators for the Continuous-Flow Synthesis of Cyclic Guanidines. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201708533] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Gabriel Glotz
- Center for Continuous Flow Synthesis and Processing (CC FLOW); Research Center Pharmaceutical Engineering GmbH (RCPE); Inffeldgasse 13 8010 Graz Austria
- Institute of Chemistry, NAWI Graz; University of Graz; Heinrichstrasse 28 8010 Graz Austria
| | - René Lebl
- Center for Continuous Flow Synthesis and Processing (CC FLOW); Research Center Pharmaceutical Engineering GmbH (RCPE); Inffeldgasse 13 8010 Graz Austria
- Institute of Chemistry, NAWI Graz; University of Graz; Heinrichstrasse 28 8010 Graz Austria
| | - Doris Dallinger
- Institute of Chemistry, NAWI Graz; University of Graz; Heinrichstrasse 28 8010 Graz Austria
| | - C. Oliver Kappe
- Center for Continuous Flow Synthesis and Processing (CC FLOW); Research Center Pharmaceutical Engineering GmbH (RCPE); Inffeldgasse 13 8010 Graz Austria
- Institute of Chemistry, NAWI Graz; University of Graz; Heinrichstrasse 28 8010 Graz Austria
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109
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Glotz G, Lebl R, Dallinger D, Kappe CO. Integration of Bromine and Cyanogen Bromide Generators for the Continuous-Flow Synthesis of Cyclic Guanidines. Angew Chem Int Ed Engl 2017; 56:13786-13789. [DOI: 10.1002/anie.201708533] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Indexed: 12/13/2022]
Affiliation(s)
- Gabriel Glotz
- Center for Continuous Flow Synthesis and Processing (CC FLOW); Research Center Pharmaceutical Engineering GmbH (RCPE); Inffeldgasse 13 8010 Graz Austria
- Institute of Chemistry, NAWI Graz; University of Graz; Heinrichstrasse 28 8010 Graz Austria
| | - René Lebl
- Center for Continuous Flow Synthesis and Processing (CC FLOW); Research Center Pharmaceutical Engineering GmbH (RCPE); Inffeldgasse 13 8010 Graz Austria
- Institute of Chemistry, NAWI Graz; University of Graz; Heinrichstrasse 28 8010 Graz Austria
| | - Doris Dallinger
- Institute of Chemistry, NAWI Graz; University of Graz; Heinrichstrasse 28 8010 Graz Austria
| | - C. Oliver Kappe
- Center for Continuous Flow Synthesis and Processing (CC FLOW); Research Center Pharmaceutical Engineering GmbH (RCPE); Inffeldgasse 13 8010 Graz Austria
- Institute of Chemistry, NAWI Graz; University of Graz; Heinrichstrasse 28 8010 Graz Austria
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110
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111
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Winkler DA. Biomimetic molecular design tools that learn, evolve, and adapt. Beilstein J Org Chem 2017; 13:1288-1302. [PMID: 28694872 PMCID: PMC5496546 DOI: 10.3762/bjoc.13.125] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Accepted: 06/09/2017] [Indexed: 12/17/2022] Open
Abstract
A dominant hallmark of living systems is their ability to adapt to changes in the environment by learning and evolving. Nature does this so superbly that intensive research efforts are now attempting to mimic biological processes. Initially this biomimicry involved developing synthetic methods to generate complex bioactive natural products. Recent work is attempting to understand how molecular machines operate so their principles can be copied, and learning how to employ biomimetic evolution and learning methods to solve complex problems in science, medicine and engineering. Automation, robotics, artificial intelligence, and evolutionary algorithms are now converging to generate what might broadly be called in silico-based adaptive evolution of materials. These methods are being applied to organic chemistry to systematize reactions, create synthesis robots to carry out unit operations, and to devise closed loop flow self-optimizing chemical synthesis systems. Most scientific innovations and technologies pass through the well-known "S curve", with slow beginning, an almost exponential growth in capability, and a stable applications period. Adaptive, evolving, machine learning-based molecular design and optimization methods are approaching the period of very rapid growth and their impact is already being described as potentially disruptive. This paper describes new developments in biomimetic adaptive, evolving, learning computational molecular design methods and their potential impacts in chemistry, engineering, and medicine.
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Affiliation(s)
- David A Winkler
- CSIRO Manufacturing, Bayview Avenue, Clayton 3168, Australia
- Monash Institute of Pharmaceutical Sciences, 392 Royal Parade, Parkville 3052, Australia
- Department of Chemistry and Physics, La Trobe Institute for Molecular Science, La Trobe University, Kingsbury Drive, Melbourne, Victoria 3086, Australia
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112
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Groves LM, Schotten C, Beames J, Platts JA, Coles SJ, Horton PN, Browne DL, Pope SJA. From Ligand to Phosphor: Rapid, Machine-Assisted Synthesis of Substituted Iridium(III) Pyrazolate Complexes with Tuneable Luminescence. Chemistry 2017; 23:9407-9418. [DOI: 10.1002/chem.201701551] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Indexed: 12/12/2022]
Affiliation(s)
- Lara M. Groves
- School of Chemistry, Main Building, Park Place; Cardiff University; Cardiff CF10 3AT UK
| | - Christiane Schotten
- School of Chemistry, Main Building, Park Place; Cardiff University; Cardiff CF10 3AT UK
| | - Joseph Beames
- School of Chemistry, Main Building, Park Place; Cardiff University; Cardiff CF10 3AT UK
| | - James A. Platts
- School of Chemistry, Main Building, Park Place; Cardiff University; Cardiff CF10 3AT UK
| | - Simon J. Coles
- UK National Crystallographic Service, Chemistry; University of Southampton, Highfield; Southampton SO17 1BJ UK
| | - Peter N. Horton
- UK National Crystallographic Service, Chemistry; University of Southampton, Highfield; Southampton SO17 1BJ UK
| | - Duncan L. Browne
- School of Chemistry, Main Building, Park Place; Cardiff University; Cardiff CF10 3AT UK
| | - Simon J. A. Pope
- School of Chemistry, Main Building, Park Place; Cardiff University; Cardiff CF10 3AT UK
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113
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An autonomous organic reaction search engine for chemical reactivity. Nat Commun 2017; 8:15733. [PMID: 28598440 PMCID: PMC5472751 DOI: 10.1038/ncomms15733] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Accepted: 04/22/2017] [Indexed: 11/14/2022] Open
Abstract
The exploration of chemical space for new reactivity, reactions and molecules is limited by the need for separate work-up-separation steps searching for molecules rather than reactivity. Herein we present a system that can autonomously evaluate chemical reactivity within a network of 64 possible reaction combinations and aims for new reactivity, rather than a predefined set of targets. The robotic system combines chemical handling, in-line spectroscopy and real-time feedback and analysis with an algorithm that is able to distinguish and select the most reactive pathways, generating a reaction selection index (RSI) without need for separate work-up or purification steps. This allows the automatic navigation of a chemical network, leading to previously unreported molecules while needing only to do a fraction of the total possible reactions without any prior knowledge of the chemistry. We show the RSI correlates with reactivity and is able to search chemical space using the most reactive pathways. While automated reaction systems typically work for the synthesis of pre-defined molecules, automated systems to discover reactivity are more challenging. Here the authors report an autonomous organic reaction search engine that allows discovery of the most reactive pathways in a multi-reagent, multistep reaction system.
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114
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Zhang J, Wang K, Teixeira AR, Jensen KF, Luo G. Design and Scaling Up of Microchemical Systems: A Review. Annu Rev Chem Biomol Eng 2017; 8:285-305. [DOI: 10.1146/annurev-chembioeng-060816-101443] [Citation(s) in RCA: 154] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The past two decades have witnessed a rapid development of microreactors. A substantial number of reactions have been tested in microchemical systems, revealing the advantages of controlled residence time, enhanced transport efficiency, high product yield, and inherent safety. This review defines the microchemical system and describes its components and applications as well as the basic structures of micromixers. We focus on mixing, flow dynamics, and mass and heat transfer in microreactors along with three strategies for scaling up microreactors: parallel numbering-up, consecutive numbering-up, and scale-out. We also propose a possible methodology to design microchemical systems. Finally, we provide a summary and future prospects.
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Affiliation(s)
- Jisong Zhang
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
| | - Kai Wang
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
| | - Andrew R. Teixeira
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
| | - Klavs F. Jensen
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
| | - Guangsheng Luo
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
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115
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Plutschack MB, Pieber B, Gilmore K, Seeberger PH. The Hitchhiker's Guide to Flow Chemistry ∥. Chem Rev 2017; 117:11796-11893. [PMID: 28570059 DOI: 10.1021/acs.chemrev.7b00183] [Citation(s) in RCA: 1047] [Impact Index Per Article: 149.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Flow chemistry involves the use of channels or tubing to conduct a reaction in a continuous stream rather than in a flask. Flow equipment provides chemists with unique control over reaction parameters enhancing reactivity or in some cases enabling new reactions. This relatively young technology has received a remarkable amount of attention in the past decade with many reports on what can be done in flow. Until recently, however, the question, "Should we do this in flow?" has merely been an afterthought. This review introduces readers to the basic principles and fundamentals of flow chemistry and critically discusses recent flow chemistry accounts.
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Affiliation(s)
- Matthew B Plutschack
- Department of Biomolecular Systems, Max-Planck Institute of Colloids and Interfaces , Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Bartholomäus Pieber
- Department of Biomolecular Systems, Max-Planck Institute of Colloids and Interfaces , Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Kerry Gilmore
- Department of Biomolecular Systems, Max-Planck Institute of Colloids and Interfaces , Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Peter H Seeberger
- Department of Biomolecular Systems, Max-Planck Institute of Colloids and Interfaces , Am Mühlenberg 1, 14476 Potsdam, Germany.,Institute of Chemistry and Biochemistry, Department of Biology, Chemistry and Pharmacy, Freie Universität Berlin , Arnimallee 22, 14195 Berlin, Germany
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116
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Loren BP, Wleklinski M, Koswara A, Yammine K, Hu Y, Nagy ZK, Thompson DH, Cooks RG. Mass spectrometric directed system for the continuous-flow synthesis and purification of diphenhydramine. Chem Sci 2017; 8:4363-4370. [PMID: 28979759 PMCID: PMC5580336 DOI: 10.1039/c7sc00905d] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Accepted: 04/10/2017] [Indexed: 12/30/2022] Open
Abstract
A highly integrated approach to the development of a process for the continuous synthesis and purification of diphenhydramine is reported. Mass spectrometry (MS) is utilized throughout the system for on-line reaction monitoring, off-line yield quantitation, and as a reaction screening module that exploits reaction acceleration in charged microdroplets for high throughput route screening. This effort has enabled the discovery and optimization of multiple routes to diphenhydramine in glass microreactors using MS as a process analytical tool (PAT). The ability to rapidly screen conditions in charged microdroplets was used to guide optimization of the process in a microfluidic reactor. A quantitative MS method was developed and used to measure the reaction kinetics. Integration of the continuous-flow reactor/on-line MS methodology with a miniaturized crystallization platform for continuous reaction monitoring and controlled crystallization of diphenhydramine was also achieved. Our findings suggest a robust approach for the continuous manufacture of pharmaceutical drug products, exemplified in the particular case of diphenhydramine, and optimized for efficiency and crystal size, and guided by real-time analytics to produce the agent in a form that is readily adapted to continuous synthesis.
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Affiliation(s)
- Bradley P Loren
- Department of Chemistry , Purdue University , West Lafayette , IN 47907 , USA . ;
| | - Michael Wleklinski
- Department of Chemistry , Purdue University , West Lafayette , IN 47907 , USA . ;
| | - Andy Koswara
- Department of Chemical Engineering , Purdue University , West Lafayette , IN 47907 , USA .
| | - Kathryn Yammine
- Department of Chemistry , Purdue University , West Lafayette , IN 47907 , USA . ;
| | - Yanyang Hu
- Department of Chemistry , Purdue University , West Lafayette , IN 47907 , USA . ;
| | - Zoltan K Nagy
- Department of Chemical Engineering , Purdue University , West Lafayette , IN 47907 , USA .
| | - David H Thompson
- Department of Chemistry , Purdue University , West Lafayette , IN 47907 , USA . ;
| | - R Graham Cooks
- Department of Chemistry , Purdue University , West Lafayette , IN 47907 , USA . ;
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117
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Dembowski M, Colla CA, Hickam S, Oliveri AF, Szymanowski JES, Oliver AG, Casey WH, Burns PC. Hierarchy of Pyrophosphate-Functionalized Uranyl Peroxide Nanocluster Synthesis. Inorg Chem 2017; 56:5478-5487. [DOI: 10.1021/acs.inorgchem.7b00649] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Mateusz Dembowski
- Department
of Chemistry and Biochemistry and §Department of Civil and Environmental Engineering
and Earth Sciences, University of Notre Dame, Notre Dame, Indiana 46556, United States
- Department of Earth and Planetary
Sciences and ∥Department of Chemistry, University of California, Davis, California 95616, United States
| | - Christopher A. Colla
- Department
of Chemistry and Biochemistry and §Department of Civil and Environmental Engineering
and Earth Sciences, University of Notre Dame, Notre Dame, Indiana 46556, United States
- Department of Earth and Planetary
Sciences and ∥Department of Chemistry, University of California, Davis, California 95616, United States
| | - Sarah Hickam
- Department
of Chemistry and Biochemistry and §Department of Civil and Environmental Engineering
and Earth Sciences, University of Notre Dame, Notre Dame, Indiana 46556, United States
- Department of Earth and Planetary
Sciences and ∥Department of Chemistry, University of California, Davis, California 95616, United States
| | - Anna F. Oliveri
- Department
of Chemistry and Biochemistry and §Department of Civil and Environmental Engineering
and Earth Sciences, University of Notre Dame, Notre Dame, Indiana 46556, United States
- Department of Earth and Planetary
Sciences and ∥Department of Chemistry, University of California, Davis, California 95616, United States
| | - Jennifer E. S. Szymanowski
- Department
of Chemistry and Biochemistry and §Department of Civil and Environmental Engineering
and Earth Sciences, University of Notre Dame, Notre Dame, Indiana 46556, United States
- Department of Earth and Planetary
Sciences and ∥Department of Chemistry, University of California, Davis, California 95616, United States
| | - Allen G. Oliver
- Department
of Chemistry and Biochemistry and §Department of Civil and Environmental Engineering
and Earth Sciences, University of Notre Dame, Notre Dame, Indiana 46556, United States
- Department of Earth and Planetary
Sciences and ∥Department of Chemistry, University of California, Davis, California 95616, United States
| | - William H. Casey
- Department
of Chemistry and Biochemistry and §Department of Civil and Environmental Engineering
and Earth Sciences, University of Notre Dame, Notre Dame, Indiana 46556, United States
- Department of Earth and Planetary
Sciences and ∥Department of Chemistry, University of California, Davis, California 95616, United States
| | - Peter C. Burns
- Department
of Chemistry and Biochemistry and §Department of Civil and Environmental Engineering
and Earth Sciences, University of Notre Dame, Notre Dame, Indiana 46556, United States
- Department of Earth and Planetary
Sciences and ∥Department of Chemistry, University of California, Davis, California 95616, United States
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118
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Oosthoek-de Vries AJ, Bart J, Tiggelaar RM, Janssen JWG, van Bentum PJM, Gardeniers HJGE, Kentgens APM. Continuous Flow 1H and 13C NMR Spectroscopy in Microfluidic Stripline NMR Chips. Anal Chem 2017; 89:2296-2303. [PMID: 28194934 PMCID: PMC5337998 DOI: 10.1021/acs.analchem.6b03784] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2016] [Accepted: 01/23/2017] [Indexed: 12/28/2022]
Abstract
Microfluidic stripline NMR technology not only allows for NMR experiments to be performed on small sample volumes in the submicroliter range, but also experiments can easily be performed in continuous flow because of the stripline's favorable geometry. In this study we demonstrate the possibility of dual-channel operation of a microfluidic stripline NMR setup showing one- and two-dimensional 1H, 13C and heteronuclear NMR experiments under continuous flow. We performed experiments on ethyl crotonate and menthol, using three different types of NMR chips aiming for straightforward microfluidic connectivity. The detection volumes are approximately 150 and 250 nL, while flow rates ranging from 0.5 μL/min to 15 μL/min have been employed. We show that in continuous flow the pulse delay is determined by the replenishment time of the detector volume, if the sample trajectory in the magnet toward NMR detector is long enough to polarize the spin systems. This can considerably speed up quantitative measurement of samples needing signal averaging. So it can be beneficial to perform continuous flow measurements in this setup for analysis of, e.g., reactive, unstable, or mass-limited compounds.
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Affiliation(s)
| | - Jacob Bart
- Institute
of Molecules and Materials, Radboud University, 6525 HP Nijmegen, The Netherlands
- Mesoscale
Chemical Systems, MESA+ Institute of Nanotechnology, University of Twente, 7522
NB Enschede, The Netherlands
| | - Roald M. Tiggelaar
- Mesoscale
Chemical Systems, MESA+ Institute of Nanotechnology, University of Twente, 7522
NB Enschede, The Netherlands
| | - Johannes W. G. Janssen
- Institute
of Molecules and Materials, Radboud University, 6525 HP Nijmegen, The Netherlands
| | - P. Jan M. van Bentum
- Institute
of Molecules and Materials, Radboud University, 6525 HP Nijmegen, The Netherlands
| | - Han J. G. E. Gardeniers
- Mesoscale
Chemical Systems, MESA+ Institute of Nanotechnology, University of Twente, 7522
NB Enschede, The Netherlands
| | - Arno P. M. Kentgens
- Institute
of Molecules and Materials, Radboud University, 6525 HP Nijmegen, The Netherlands
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119
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Gomez MV, de la Hoz A. NMR reaction monitoring in flow synthesis. Beilstein J Org Chem 2017; 13:285-300. [PMID: 28326137 PMCID: PMC5331343 DOI: 10.3762/bjoc.13.31] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Accepted: 02/03/2017] [Indexed: 01/06/2023] Open
Abstract
Recent advances in the use of flow chemistry with in-line and on-line analysis by NMR are presented. The use of macro- and microreactors, coupled with standard and custom made NMR probes involving microcoils, incorporated into high resolution and benchtop NMR instruments is reviewed. Some recent selected applications have been collected, including synthetic applications, the determination of the kinetic and thermodynamic parameters and reaction optimization, even in single experiments and on the μL scale. Finally, software that allows automatic reaction monitoring and optimization is discussed.
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Affiliation(s)
- M Victoria Gomez
- Área Química Orgánica, Facultad de Químicas, Universidad de Castilla-La Mancha, Avda. Camilo José Cela nº 10, E-13071 Ciudad Real, Spain and Instituto Regional de Investigación Científica Aplicada (IRICA), Avda. Camilo José Cela s/n, E-13071 Ciudad Real, Spain
| | - Antonio de la Hoz
- Área Química Orgánica, Facultad de Químicas, Universidad de Castilla-La Mancha, Avda. Camilo José Cela nº 10, E-13071 Ciudad Real, Spain and Instituto Regional de Investigación Científica Aplicada (IRICA), Avda. Camilo José Cela s/n, E-13071 Ciudad Real, Spain
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120
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Echtermeyer A, Amar Y, Zakrzewski J, Lapkin A. Self-optimisation and model-based design of experiments for developing a C-H activation flow process. Beilstein J Org Chem 2017; 13:150-163. [PMID: 28228856 PMCID: PMC5301945 DOI: 10.3762/bjoc.13.18] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Accepted: 01/05/2017] [Indexed: 12/18/2022] Open
Abstract
A recently described C(sp3)-H activation reaction to synthesise aziridines was used as a model reaction to demonstrate the methodology of developing a process model using model-based design of experiments (MBDoE) and self-optimisation approaches in flow. The two approaches are compared in terms of experimental efficiency. The self-optimisation approach required the least number of experiments to reach the specified objectives of cost and product yield, whereas the MBDoE approach enabled a rapid generation of a process model.
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Affiliation(s)
- Alexander Echtermeyer
- Aachener Verfahrenstechnik – Process Systems Engineering, RWTH Aachen University, Aachen, Germany
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, United Kingdom
| | - Yehia Amar
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, United Kingdom
| | - Jacek Zakrzewski
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, United Kingdom
| | - Alexei Lapkin
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, United Kingdom
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121
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Capel AJ, Wright A, Harding MJ, Weaver GW, Li Y, Harris RA, Edmondson S, Goodridge RD, Christie SDR. 3D printed fluidics with embedded analytic functionality for automated reaction optimisation. Beilstein J Org Chem 2017; 13:111-119. [PMID: 28228852 PMCID: PMC5302008 DOI: 10.3762/bjoc.13.14] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Accepted: 12/29/2016] [Indexed: 11/23/2022] Open
Abstract
Additive manufacturing or ‘3D printing’ is being developed as a novel manufacturing process for the production of bespoke micro- and milliscale fluidic devices. When coupled with online monitoring and optimisation software, this offers an advanced, customised method for performing automated chemical synthesis. This paper reports the use of two additive manufacturing processes, stereolithography and selective laser melting, to create multifunctional fluidic devices with embedded reaction monitoring capability. The selectively laser melted parts are the first published examples of multifunctional 3D printed metal fluidic devices. These devices allow high temperature and pressure chemistry to be performed in solvent systems destructive to the majority of devices manufactured via stereolithography, polymer jetting and fused deposition modelling processes previously utilised for this application. These devices were integrated with commercially available flow chemistry, chromatographic and spectroscopic analysis equipment, allowing automated online and inline optimisation of the reaction medium. This set-up allowed the optimisation of two reactions, a ketone functional group interconversion and a fused polycyclic heterocycle formation, via spectroscopic and chromatographic analysis.
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Affiliation(s)
- Andrew J Capel
- Department of Chemistry, Loughborough University, Loughborough, LE11 3TU, UK
| | - Andrew Wright
- Department of Chemistry, Loughborough University, Loughborough, LE11 3TU, UK
| | - Matthew J Harding
- Department of Chemistry, Loughborough University, Loughborough, LE11 3TU, UK
| | - George W Weaver
- Department of Chemistry, Loughborough University, Loughborough, LE11 3TU, UK
| | - Yuqi Li
- Department of Chemistry, Loughborough University, Loughborough, LE11 3TU, UK
| | - Russell A Harris
- School of Mechanical Engineering, University of Leeds, Leeds, LS2 9JT, UK
| | - Steve Edmondson
- School of Materials, The University of Manchester, Manchester, M13 9PL, UK
| | - Ruth D Goodridge
- Faculty of Engineering, The University of Nottingham, Nottingham, NG7 2RD, UK
| | - Steven D R Christie
- Department of Chemistry, Loughborough University, Loughborough, LE11 3TU, UK
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122
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Okafor O, Weilhard A, Fernandes JA, Karjalainen E, Goodridge R, Sans V. Advanced reactor engineering with 3D printing for the continuous-flow synthesis of silver nanoparticles. REACT CHEM ENG 2017. [DOI: 10.1039/c6re00210b] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
3D printing has been employed to manufacture advanced reactor geometries based on miniaturised continuous-flow oscillatory baffled reactors (mCOBRs) and they have been applied for the fouling free continuous-flow synthesis of silver nanoparticles with optimal size control.
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Affiliation(s)
- Obinna Okafor
- Faculty of Engineering
- University of Nottingham
- Nottingham
- UK
| | - Andreas Weilhard
- Faculty of Engineering
- University of Nottingham
- Nottingham
- UK
- GSK Carbon Neutral Laboratory
| | | | | | - Ruth Goodridge
- Faculty of Engineering
- University of Nottingham
- Nottingham
- UK
| | - Victor Sans
- Faculty of Engineering
- University of Nottingham
- Nottingham
- UK
- GSK Carbon Neutral Laboratory
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123
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Heiland JJ, Warias R, Lotter C, Mauritz L, Fuchs PJW, Ohla S, Zeitler K, Belder D. On-chip integration of organic synthesis and HPLC/MS analysis for monitoring stereoselective transformations at the micro-scale. LAB ON A CHIP 2016; 17:76-81. [PMID: 27896351 DOI: 10.1039/c6lc01217e] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We present a microfluidic system, seamlessly integrating microflow and microbatch synthesis with a HPLC/nano-ESI-MS functionality on a single glass chip. The microfluidic approach allows to efficiently steer and dispense sample streams down to the nanoliter-range for studying reactions in quasi real-time. In a proof-of-concept study, the system was applied to explore amino-catalyzed reactions, including asymmetric iminium-catalyzed Friedel-Crafts alkylations in microflow and micro confined reaction vessels.
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Affiliation(s)
- Josef J Heiland
- Institute of Analytical Chemistry, University of Leipzig, Linnéstr. 3, D-04103 Leipzig, Germany.
| | - Rico Warias
- Institute of Analytical Chemistry, University of Leipzig, Linnéstr. 3, D-04103 Leipzig, Germany.
| | - Carsten Lotter
- Institute of Analytical Chemistry, University of Leipzig, Linnéstr. 3, D-04103 Leipzig, Germany.
| | - Laura Mauritz
- Institute of Analytical Chemistry, University of Leipzig, Linnéstr. 3, D-04103 Leipzig, Germany.
| | - Patrick J W Fuchs
- Institute of Organic Chemistry, University of Leipzig, Johannisallee. 29, D-04103 Leipzig, Germany
| | - Stefan Ohla
- Institute of Analytical Chemistry, University of Leipzig, Linnéstr. 3, D-04103 Leipzig, Germany.
| | - Kirsten Zeitler
- Institute of Organic Chemistry, University of Leipzig, Johannisallee. 29, D-04103 Leipzig, Germany
| | - Detlev Belder
- Institute of Analytical Chemistry, University of Leipzig, Linnéstr. 3, D-04103 Leipzig, Germany.
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124
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Lotter C, Poehler E, Heiland JJ, Mauritz L, Belder D. Enantioselective reaction monitoring utilizing two-dimensional heart-cut liquid chromatography on an integrated microfluidic chip. LAB ON A CHIP 2016; 16:4648-4652. [PMID: 27824367 DOI: 10.1039/c6lc01138a] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Chip-integrated, two-dimensional high performance liquid chromatography is introduced to monitor enantioselective continuous micro-flow synthesis. The herein described development of the first two-dimensional HPLC-chip was realized by the integration of two different columns packed with reversed-phase and chiral stationary phase material on a microfluidic glass chip, coupled to mass spectrometry. Directed steering of the micro-flows at the joining transfer cross enabled a heart-cut operation mode to transfer the chiral compound of interest from the first to the second chromatographic dimension. This allows for an interference-free determination of the enantiomeric excess by seamless hyphenation to electrospray mass spectrometry. The application for rapid reaction optimization at micro-flow conditions is exemplarily shown for the asymmetric organocatalytic continuous micro-flow synthesis of warfarin.
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Affiliation(s)
- Carsten Lotter
- Institute of Analytical Chemistry, Leipzig University, Linnéstraße 3, 04103 Leipzig, Germany.
| | - Elisabeth Poehler
- Institute of Analytical Chemistry, Leipzig University, Linnéstraße 3, 04103 Leipzig, Germany.
| | - Josef J Heiland
- Institute of Analytical Chemistry, Leipzig University, Linnéstraße 3, 04103 Leipzig, Germany.
| | - Laura Mauritz
- Institute of Analytical Chemistry, Leipzig University, Linnéstraße 3, 04103 Leipzig, Germany.
| | - Detlev Belder
- Institute of Analytical Chemistry, Leipzig University, Linnéstraße 3, 04103 Leipzig, Germany.
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125
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Liang Y, Watson C, Malinski T, Tepera J, Bergbreiter DE. Soluble polymer supports for homogeneous catalysis in flow reactions. PURE APPL CHEM 2016. [DOI: 10.1515/pac-2016-0801] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
AbstractThe use of polyisobutylene and poly(4-dodecylstyrene) bound catalysts that contain transition metal or organocatalysts for cyclopropanation, ring-closing metathesis, and nucleophilic catalysis in flow chemistry schemes is described and compared with similar catalysts used in batch reactions. These Rh(II) carboxylate catalysts, N-heterocyclic carbene-ligated Ru(II) benzylidene catalysts, and analogs of 4-dimethylaminopyridine catalysts were used in reactions in heptane in flow and then separated in a gravity based liquid/liquid separation using a biphasic heptane/acetonitrile mixture. The less dense catalyst-containing phase in that separation was continuously used in flow with fresh substrate solution. Leaching of catalysts, yields, and turnover frequencies in these flow reactions were comparable with prior results obtained with the same phase isolable catalysts in batch reactions.
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Affiliation(s)
- Yannan Liang
- 1Department of Chemistry, Texas A&M University, College Station, TX 77843, United States of America
| | - Christopher Watson
- 1Department of Chemistry, Texas A&M University, College Station, TX 77843, United States of America
| | - Thomas Malinski
- 1Department of Chemistry, Texas A&M University, College Station, TX 77843, United States of America
| | - Justin Tepera
- 1Department of Chemistry, Texas A&M University, College Station, TX 77843, United States of America
| | - David E. Bergbreiter
- 1Department of Chemistry, Texas A&M University, College Station, TX 77843, United States of America
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126
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Cortés-Borda D, Kutonova KV, Jamet C, Trusova ME, Zammattio F, Truchet C, Rodriguez-Zubiri M, Felpin FX. Optimizing the Heck–Matsuda Reaction in Flow with a Constraint-Adapted Direct Search Algorithm. Org Process Res Dev 2016. [DOI: 10.1021/acs.oprd.6b00310] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Daniel Cortés-Borda
- Université
de Nantes, UFR des Sciences et des Techniques, CNRS UMR 6241, LINA, 2 rue de la Houssinière, 44322 Nantes Cedex 3, France
- Université
de Nantes, UFR des Sciences et des Techniques, CNRS UMR 6230, CEISAM, 2 rue de la Houssinière, 44322 Nantes Cedex 3, France
| | - Ksenia V. Kutonova
- Department
of Biotechnology and Organic Chemistry, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - Corentin Jamet
- Université
de Nantes, UFR des Sciences et des Techniques, CNRS UMR 6241, LINA, 2 rue de la Houssinière, 44322 Nantes Cedex 3, France
| | - Marina E. Trusova
- Department
of Biotechnology and Organic Chemistry, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - Françoise Zammattio
- Université
de Nantes, UFR des Sciences et des Techniques, CNRS UMR 6241, LINA, 2 rue de la Houssinière, 44322 Nantes Cedex 3, France
| | - Charlotte Truchet
- Université
de Nantes, UFR des Sciences et des Techniques, CNRS UMR 6230, CEISAM, 2 rue de la Houssinière, 44322 Nantes Cedex 3, France
| | - Mireia Rodriguez-Zubiri
- Université
de Nantes, UFR des Sciences et des Techniques, CNRS UMR 6241, LINA, 2 rue de la Houssinière, 44322 Nantes Cedex 3, France
| | - François-Xavier Felpin
- Université
de Nantes, UFR des Sciences et des Techniques, CNRS UMR 6241, LINA, 2 rue de la Houssinière, 44322 Nantes Cedex 3, France
- Institut Universitaire
de France, 1 rue Descartes, 75231 Paris Cedex 05, France
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127
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Monaghan T, Harding MJ, Harris RA, Friel RJ, Christie SDR. Customisable 3D printed microfluidics for integrated analysis and optimisation. LAB ON A CHIP 2016; 16:3362-3373. [PMID: 27452498 DOI: 10.1039/c6lc00562d] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The formation of smart Lab-on-a-Chip (LOC) devices featuring integrated sensing optics is currently hindered by convoluted and expensive manufacturing procedures. In this work, a series of 3D-printed LOC devices were designed and manufactured via stereolithography (SL) in a matter of hours. The spectroscopic performance of a variety of optical fibre combinations were tested, and the optimum path length for performing Ultraviolet-visible (UV-vis) spectroscopy determined. The information gained in these trials was then used in a reaction optimisation for the formation of carvone semicarbazone. The production of high resolution surface channels (100-500 μm) means that these devices were capable of handling a wide range of concentrations (9 μM-38 mM), and are ideally suited to both analyte detection and process optimisation. This ability to tailor the chip design and its integrated features as a direct result of the reaction being assessed, at such a low time and cost penalty greatly increases the user's ability to optimise both their device and reaction. As a result of the information gained in this investigation, we are able to report the first instance of a 3D-printed LOC device with fully integrated, in-line monitoring capabilities via the use of embedded optical fibres capable of performing UV-vis spectroscopy directly inside micro channels.
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Affiliation(s)
- T Monaghan
- Wolfson School of Mechanical and Manufacturing Engineering, Loughborough University, Ashby Road, Loughborough, LE11 3TU, UK.
| | - M J Harding
- Department of Chemistry, Loughborough University, Epinal Way, Loughborough, LE11 3TU, UK.
| | - R A Harris
- School of Mechanical Engineering, University of Leeds, Leeds, LS2 9JT, UK
| | - R J Friel
- Wolfson School of Mechanical and Manufacturing Engineering, Loughborough University, Ashby Road, Loughborough, LE11 3TU, UK.
| | - S D R Christie
- Department of Chemistry, Loughborough University, Epinal Way, Loughborough, LE11 3TU, UK.
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128
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Archambault CM, Leadbeater NE. A benchtop NMR spectrometer as a tool for monitoring mesoscale continuous-flow organic synthesis: equipment interface and assessment in four organic transformations. RSC Adv 2016. [DOI: 10.1039/c6ra19662d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
An approach is reported for monitoring continuous-flow reactions by means of a low-field benchtop NMR spectrometer.
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129
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Fitzpatrick DE, Ley SV. Engineering chemistry: integrating batch and flow reactions on a single, automated reactor platform. REACT CHEM ENG 2016. [DOI: 10.1039/c6re00160b] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Synthesis chemistry need not be limited to either only batch or only flow; rather, in the future we expect that it will consist of an amalgamation of the best and most appropriate methods.
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Affiliation(s)
| | - S. V. Ley
- Department of Chemistry
- University of Cambridge
- Cambridge CB2 1EW
- UK
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