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Updated: Oct 8, 2025
10:13
A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks
Published on: April 28, 2023
2.6K
Summary
A novel spectrophotometer measures thin film transmissivity and reflectivity. This instrument is ideal for small samples (1 mm²) where reference samples are difficult to prepare.
Area of Science:
- Spectroscopy
- Optical Physics
- Materials Science
Background:
- Traditional spectrophotometry faces challenges with small or uniquely prepared samples.
- Preparing identical reference layers for thin films on substrates can be problematic.
- Existing instruments may have limitations with specific sample types or sizes.
Purpose of the Study:
- To develop a single light source-single detector spectrophotometer.
- To enable continuous measurement of transmissivity or reflectivity versus wavelength.
- To facilitate analysis of small-area thin film samples (1 mm² and smaller).
Main Methods:
- Construction of a custom spectrophotometer using commercially available components.
- Incorporation of a custom-made chopper blade.
- Utilization of reflecting optics for broad wavelength applicability.
Main Results:
- The instrument successfully records transmissivity or reflectivity as a function of wavelength.
- Measurements were performed on thin film samples as small as 1 mm².
- The use of reflecting optics eliminated wavelength limitations.
Conclusions:
- The developed spectrophotometer is effective for analyzing small-area thin film samples.
- The instrument overcomes challenges associated with reference sample preparation.
- Its design allows for versatile application across various wavelengths.
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