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Characterizing Theta-Emitter Generation for Use in Microdroplet Reactions
Jacob B Hatvany1, Emma-Le P Olsen1, Elyssia S Gallagher1
1Department of Chemistry & Biochemistry, Baylor University, One Bear Place #97348, Waco, Texas 76798, United States.
Journal of the American Society for Mass Spectrometry
|October 10, 2024
Summary
Researchers optimized the production of theta emitters, specialized glass tips for rapid chemical reactions. Adjusting pull parameters, particularly velocity, allows for consistent generation of various emitter sizes, enabling precise control over reaction times.
Area of Science:
- Analytical Chemistry
- Materials Science
Background:
- Theta emitters are crucial for rapid mixing reactions, facilitating microdroplet generation.
- Mixing occurs during electrospray ionization (ESI), with reaction times ranging from microseconds to milliseconds.
- Emitter size influences droplet size, desolvation time, and droplet lifetime, impacting reaction duration.
Purpose of the Study:
- To characterize the effect of pull parameters on generating distinct-sized theta emitters.
- To compare parameter effects between single-channel and theta capillaries.
- To provide resources for reproducible, versatile, and inexpensive rapid-mixing systems.
Main Methods:
- Utilized a P-1000 tip puller to systematically vary pull parameters.
- Characterized the impact of parameters like velocity on channel diameter.
- Compared tip-pulling characteristics of single-channel versus theta capillaries.
Main Results:
- The velocity parameter significantly influenced theta emitter channel diameter.
- Distinct emitter sizes were reproducibly generated by optimizing pull parameters.
- Differences in pulling parameters were observed between single-channel and theta capillaries due to the internal septum.
Conclusions:
- Optimized pull parameters enable consistent production of various theta emitter sizes.
- Theta emitters of different sizes allow for precise control of reaction times.
- This work facilitates the development of adaptable and cost-effective rapid-mixing systems for biological and chemical applications.
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