Sublimation Process
Sublimation Process - Related Videos
05:39
Purification of Ferrocene by Sublimation
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2023
Source: Tamara M. Powers, Department of Chemistry, Texas A&M University Sublimation, the direct phase transition of a solid into a gas without first becoming a liquid, takes place at temperatures and pressures lower than that of the compound's triple point (Figure 1).The process of sublimation can be utilized to purify both organic and inorganic solids. During the purification technique, a solid is heated directly into the gas-phase. All non-volatile impurities are left behind while the...
02:33
Phase Transitions: Sublimation and Deposition
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2020
Some solids can transition directly into the gaseous state, bypassing the liquid state, via a process known as sublimation. At room temperature and standard pressure, a piece of dry ice (solid CO2) sublimes, appearing to gradually disappear without ever forming any liquid. Snow and ice sublimate at temperatures below the melting point of water, a slow process that may be accelerated by winds and the reduced atmospheric pressures at high altitudes. When solid iodine is warmed, the solid sublimes...
01:03
Sublimation
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2024
Sublimation is the direct transformation of a solid to a gaseous state. For instance, at standard pressure and room temperature, solid carbon dioxide sublimes to gaseous carbon dioxide. The phase diagram depicts the conditions required for sublimation. This process occurs at the solid-gas phase boundary and is not observed above the triple point of the substance. The reverse of sublimation is called deposition, where a gaseous substance condenses directly into a solid. Sublimation and...
08:36
Sublimation of DAN Matrix for the Detection and Visualization of Gangliosides in Rat Brain Tissue for MALDI Imaging Mass Spectrometry
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Cited by 43 •
2017
A protocol for the sublimation of DAN matrix onto rat brain tissue for the detection of gangliosides using MALDI Imaging Mass Spectrometry is presented.
06:25
Step-by-Step Guide for Harnessing Organic Light Emitting Diodes by Solution Processed Device Fabrication of a TADF Emitter
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Cited by 1 •
2025
Organic Light Emitting Diode (OLED) devices offer superior display quality with better contrast while propounding environmental benefits by lower energy consumption. Here, a simple strategy for the solution-processed OLED device fabrication is presented in a sequential manner.
FAQs
Temperature and pressure determine whether molecules can leave the solid surface and enter the vapor phase. In freeze-drying, lowering pressure allows frozen water to sublime while the product remains cold. Managing these conditions is therefore central to removing water while limiting heat exposure, which helps protect the stability of sensitive materials.
Keeping the product cold limits the heat delivered during water removal, an important consideration for temperature-sensitive specimens, reagents, and drug formulations. The combination of reduced pressure and low product temperature supports moisture removal without relying on substantial heating. This can improve storage stability and make later handling more consistent.
The critical variables are temperature and pressure, because they determine whether frozen water can escape as vapor while the product remains cold. Their control connects the physical phase change to the biological objective of preserving material stability. In cancer research, that relationship matters when preparing samples for reproducible molecular or therapeutic studies.
A supported workflow begins by freezing the material, then applying reduced pressure so water leaves as vapor while the product stays cold. The resulting dried material can then be stored and handled with less water present. This sequence is relevant when preserving specimens, diagnostic reagents, or drug formulations for later cancer research use.
The overview identifies three main categories: biological specimens, diagnostic reagents, and some drug formulations. Sublimation is especially relevant when these materials are sensitive to temperature or moisture-related instability. Preserving them can simplify sample handling and support more consistent preparation for molecular analyses, diagnostic work, or therapeutic investigations.
Improved stability can make sample handling more reliable and reduce variation associated with storing or preparing sensitive materials. In cancer research, that consistency can benefit downstream molecular studies, diagnostic investigations, and therapeutic work. The value is therefore not only longer or easier storage, but also more reproducible access to material for subsequent experiments.