Tag Archives: mid-IR


在2010 年即将过去之际,我将于利用十一月十七日的机会再一次回顾实时原位FTIR在促进学术界化学研究中起的作用。这次网络研讨会是一个系列里的第六部:学术界通过使用实时原位FTIR在有机化学研究上的新进展。在准备此研讨会的过程中,我意识到了原位中红外(in situ mid-IR)的使用是如何地广泛,涉及宽广的化学领域。为了方便起见,我把注意力集中在美国化学学会(ACS)杂志的研究文章上。

从2010年起,美国化学学会(ACS)杂志上发表了28篇列举ReactIR™使用的研究文章 (作为本博客的读者,我设想你们多数都知道ReactIR™ 是一个用中红外光谱专门开发出来进行实时原位分析的专用系统) 。这些文章发表在ACS杂志的Macromolecules, Inorganic Chemistry, JACS, Organometallics, JOC, Organic Letters, 和 Analytical Chemistry。另外, 有两本书的章节里列举了ReactIR™。同时,我注意到三分之一的文章发表在ACS 杂志的Macromolecules 和 Inorganic Chemistry上。

在这即将到来的网络研讨会中,我将通过六篇选出的文章回顾ReactIR™在提供化学洞察力上的作用,从而示范说明原位FTIR 的广泛应用。这些文章出自以下化学研究组:

  • Donald Darensbourg (Texas A&M University)
  • Bernard Rieger (Technical University of Munich, Germany)
  • Ming-Hsi Chiang (Academia Sinica, Tapei, Taiwan)
  • Jason Kingsbury (Boston College)
  • Clark Landis (University of Wisconsin-Madison)
  • David MacMillon (Princeton University)



Recent Chemistry Research from ACS Journals Citing Use of In Situ FTIR

As 2010 comes to a close, I am taking one more opportunity to review the role that real-time in situ FTIR has played in advancing chemical research in academia on November 17. This online seminar is the sixth installment in the series: Recent Advances in Organic Chemistry Research in Academia Through the Use of Real-time In Situ FTIR.  In preparing for this webinar, I have come realize how pervasive the use of in situ mid-IR is across a wide range of chemistry disciplines.  For convenience sake, I focused only on the American Chemical Society (ACS) Journals research articles.

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Process Analytical Technology (PAT) in Fermentation

In Situ Monitoring of Biomass, Cell Growth and Cell Agglomeration

Real-time monitoring of the cell population within a bioreactor provides invaluable information regarding biomass concentration and growth kinetics that can be essential for detailed characterization and control of the fermentation process. Additionally, real-time information related to cell morphology, aggregation, and floc size have also been documented and shown to aid in the understanding and optimization of bioprocesses. Continue reading

How Real-Time In Situ FTIR Advances Organic Chemistry

Advances in Organic Chemistry in Academia

Recent Advances in Organic Chemistry

Paul Scholl will present a free online seminar – Recent Advances in Organic Chemistry in Academia Using Real-Time In Situ FTIR – on July 28.  This on-going series reviews recent advances in organic chemistry by academia where real-time in situ mid-infrared (mid-IR) analytics played a role in the advancement of organic chemistry research.

During the Recent Advances in Organic Chemistry seminar, Paul will discuss several recent publications by academia illustrating how real-time in situ Fourier Transform Infrared spectroscopy (FTIR) was used to help advance the fundamental understanding of organic chemistry. During this series, the following research areas have been discussed:
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Pfizer YouTube video: Process Analytical Technology – Using Mid-IR spectroscopy to monitor a telescoped chemical reaction

Ian Clegg, an Associate Research Fellow at Pfizer Global Research and Development Sandwich Laboratories, United Kingdom recently posted a discussion on LinkedIn’s Process Analytical Technology (PAT) group site titled “PAT data (Mid-IR) posted onto YouTube.”

This YouTube video is entitled “Process Analytical Technology: Using Mid-IR spectroscopy to monitor a telescoped chemical reaction.”


In this video, 3 sequential chemical reactions are run in one vessel without stopping or isolating between reactions, and ReactIR™ (real-time in situ reaction analysis) is used to monitor all 3 reaction phases. All of the key reagents, intermediates and products produce unique peaks which show reaction progression without having to take samples. The video shows the spectra of the reaction as a function of time and how the spectra change. The video shows clearly which peaks were monitored and to which components those peaks correlate.

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Reducing Time to Manufacturing Using Real-time In Situ FTIR Analytics as a Process Analytical Technology (PAT) Tool – On-Demand Webinar

The on-demand version of the Reducing Time to Manufacturing Using Real-time In Situ FTIR Analytics as a Process Analytical Technology (PAT) Tool webinar that I presented on January 20 is now available.

View the Reducing Time to Manufacturing On-Demand Webinar.


During this on-demand webinar, I review case studies from the pharmaceutical industry to show how real-time mid-infrared (mid-IR) analytics provide critical information that results in shorter process development timelines, including:

  • Intermediate detection during an indazole alkylation and scale-up – Pfizer
  • Hazardous gas detection during tetrazole synthesis – Merck
  • Monitoring a Grignard reaction at the multikilogram scale – Bristol-Myers Squibb
  • Scale-up involving a sensitive enolate – Johnson and Johnson (J&J)

If you have any questions or would like to discuss this further, then please contact me.