Thermal analysis & NMR

We offer analytical services for various applications. Services can include method development, sample preparation, data acquisition and analysis. A selection of analytical services is also offered to the general public.

 

Thermal Analysis lab

Thermal analysis is a group of techniques that studies the relationship between sample property and temperature. The Thermal Analysis Lab at the Institute for Drug Research is equipped with two instruments:

  • Differential Scanning Calorimeter -METTLER TOLEDO DSC1
  • Thermogravimetric Analysis- METTLER TOLEDO TGA/DSC1

 

Instruments are accessible to the staff of the Faculty of Medicine who have been trained on their use and have passed a practical and theoretical exam.

Thermal analysis services are available to all inside and outside users, both academic and industrial.

 

The lab is located at the Faculty of Medicine, Ein Karem, School of Pharmacy Building, -1st Floor, Room 27.

 

 

Thermal Analysis Lab Instrumentation:

Differential Scanning Calorimeter (DSC)

In DSC the heat flow in and out of a sample and a reference material are measured as a function of temperature as the sample is heated, cooled, or held isothermally at constant temperature. The measurement signal is the energy absorbed or released by the sample.

METTLER TOLEDO DSC 1  is used in our thermal analysis laboratories to determine physical properties and processes such as:

  • Crystallization
  • Glass transition
  • Melting point
  • Thermal stability
  • Solid-solid transitions and polymorphism
  • Pyrolysis
  • Chemical reactions such as thermal decomposition or polymerization
  • Comparison of different batches of product

 

Our DSC covers a temperature ranging from -150 to 700°C, and the furnace chamber can be purged with nitrogen.

 

Thermogravimetric Analysis (TGA)

TGA is an experimental technique in which the mass of a sample is measured as a function of sample temperature or as a function of the time in isothermal experiments. The results of a TGA measurement are display as a curve of mass against temperature or time.

METTLER TOLEDO TGA/DSC1 instrument that is used in our thermal analysis laboratories, simultaneously measures heat flow in addition to weight change.

The effects that can cause a sample to lose mass include:

  • Evaporation of volatile constituents
  • Loss of water of crystallization
  • Oxidation of metals
  • Oxidative decomposition of organic substances
  • Thermal decomposition with the formation of gaseous products.

  

Our TGA covers a temperature ranging from RT to 1100°C and the furnace chamber can be purged with nitrogen.

 

Thermal Analysis Services

Thermal Analysis service is provided on DSC and TGA both for the Faculty of Medicine staff (Internal Services) as well as for external users, academic and industrial (External Services).

 

Samples may be submitted for measuring only or measuring and data analysis. The service offers specialist support and advice in thermal analysis includes:

  • Sample preparation
  • Performing the right measurements
  • Interpretation of DSC curve

Nuclear Magnetic Resonance (NMR) Unit

Lab instrumentation

            Varian Mercury 300 MHz NMR

            Bruker Avance III 500 MHz NMR

 

Nuclear Magnetic Resonance (NMR) Unit

Home

The NMR lab of the Institute for Drug Research is equipped with two NMR spectrometers including a 300 MHz instrument and a 500 MHz instrument. Our primary goal is to support the research at the Faculty of Medicine, by providing a variety of NMR applications such as:

  • Chemical structure analysis for detailed structural characterization for small molecules
  • Quantification of mixture components
  • Kinetic studies of reaction mixtures
  • Characterization of polymers.

 

The NMR lab instruments are accessible to staff and students of the Faculty of Medicine who have been trained on their use and have passed a practical and theoretical exam.

NMR services are available to all inside and outside users, both academic and industrial.

The NMR lab is located at The Faculty of Medicine Ein Karem, The Hebrew University, Jerusalem, School of Medicine building, -2 floor, room 5. 

 

 

Lab Instrumentation:

Varian Mercury 300 MHz NMR

Is used primarily for routine identification and standard work with small organic molecules.

  • Equipped with a 5mm auto-switchable 4-nuclei (1H/19F/13C/31P) probe
  • Suitable for preforming routine one- and two-dimensional experiments, such as APT, DEPT, 1D-NOESY, 1D-TOCSY, J-RESOLVE, COSY, NOESY, TOCSY, HSQC, HMBC, etc.
  • Instrument is accessible to staff of the Faculty of Medicine and Hadassah Medical Center who has been trained on their use and has passed a practical and theoretical exam.

 

    

 

 

Bruker Avance III 500MHz NMR.

  • Equipped with an auto-tuning multi-nuclear direct observation probe.
  • Has variable temperature (20°C to 80 °C)
  • Suitable for preforming a wide range of advanced 1D and 2D proton and carbon experiments such as APT, DEPT, 1D_NOESY, 1D_TOCSY, J-RESOLVE, COSY, NOESY, TOCSY, HSQC, HMBC,T1, T2, DOSY etc.
  • 31P, 19F, 11B, 2H 195Pt, 15N are also configured.
  • The spectrometer is running Bruker TopSpin software.
  • Instruments are accessible to staff of the Faculty of Medicine and Hadassah Medical Center, who have been trained on their use and have passed a practical and theoretical exam.


    

 

 Service

A NMR service is provided on 300 MHz NMR and 500 MHz NMR both for the Faculty of Medicine staff (Internal NMR Services) as well as for external users, academic and industrial (External NMR Services).

 

  • Internal NMR service

The Internal NMR service is available for all research at the Faculty of Medicine. Samples may be submitted for data collection only or data collection and data analysis. The NMR service includes specialist support and advice such as:

  • Guidance in the choice of experiment.
  • Help in setting up new experiments.
  • Quantitative and qualitative data acquisition and data analysis on the composition of a sample.
  • Opportunity to undertake collaborative research projects requiring NMR expertise.

 

  • External NMR Service

The NMR lab also offers an external NMR service for outside users, both academic and industrial. A full range of NMR experiments are offered on NMR 500 MHz, including advanced one- and two-dimensional experiments. We also offer advice on experiment selection, data interpretation and reports.

 

For price quote please contact - Dr. Aviva Friedman-Ezra, Tel: 87030,

E-mail:  aviva.friedman-ezra@mail.huji.ac.il

SAFETY

  • People with medical implants (such as cardiac implants, pacemakers, aneurysm clips, surgical clips or prostheses) should check with us before entering the NMR room.
  • All magnetic objects should be kept outside the NMR magnet room.
  • Keep electronics, credit cards and magnetic storage media outside of the NMR magnet room.

 

 

Contact Us

 

Dr. Aviva Friedman-Ezra

Faculty of Medicine ,School of Pharmacy Building

Ein Karem Campus

The Hebrew University

Tel: +972-2-6757030

Fax: +972-2-6757076

E-mail: aviva.friedman-ezra@mail.huji.ac.il