Ionizing Matrix for Vacuum Ionization
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Solution Overview
Problem
Mass spectrometry requires difficult and time-consuming sample preparation, often necessitating high energy inputs to achieve ionized forms for analysis.
Innovation Solution
The use of specific ionizing matrix compounds that sublime or evaporate at sub-atmospheric pressure to produce gas-phase positive or negative ions of analyte compounds without the need for high voltage or laser energy, facilitating ionization through spontaneous charge separation upon exposure to vacuum conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high energy inputs (high voltage or laser) are applied to ionize analyte samples, then ionization efficiency is improved, but sample preparation complexity and time consumption increase
Solution Approach 1:
The patent introduces an ionizing matrix as an intermediary substance that facilitates ionization of the analyte. The matrix compounds (such as aromatic ring compounds with electron-withdrawing groups) act as mediators between the vacuum conditions and the analyte molecules, enabling spontaneous charge separation and ion formation without requiring direct application of high voltage or laser energy to the analyte itself.
Solution Approach 2:
The system enables self-ionization of the analyte through spontaneous charge separation when the matrix-analyte mixture is exposed to vacuum conditions. The matrix compounds automatically facilitate the ionization process without requiring external high energy inputs, allowing the sample to essentially ionize itself through the vacuum-induced sublimation and charge separation mechanism.
2Productivity
If high energy inputs (high voltage or laser) are used to produce gas-phase ions, then ion production is achieved, but the analysis time and energy consumption increase
Solution Approach 1:
The patent replaces the traditional mechanical/physical systems (high voltage fields, laser beams) with a chemical system based on matrix compounds that facilitate ionization through spontaneous charge separation. This substitution eliminates the need for high energy inputs while maintaining efficient ion production, as the vacuum conditions alone drive the sublimation and ionization process through the matrix-analyte interaction.
Solution Approach 2:
The method utilizes phase transition of the matrix compounds from solid to gas phase through sublimation under vacuum conditions. This phase transition naturally provides the energy needed for ionization, as the sublimation process itself facilitates charge separation and ion formation, eliminating the need for additional high energy inputs.
3Productivity
If traditional ionization methods are used, then analyte ions are produced, but fragile molecules may be damaged and sample preparation is time-consuming
Solution Approach 1:
The matrix-analyte mixture performs self-ionization through spontaneous charge separation when exposed to vacuum, eliminating the need for external high energy inputs that could damage fragile molecules. The process occurs naturally as the matrix compounds sublime and facilitate charge separation, gently ionizing even sensitive analytes without causing molecular damage.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method, known as Matrix-Assisted Ionization Vacuum (MAIV), enables efficient production of analyte ions with high sensitivity and selectivity, reducing the need for external energy sources and allowing analysis of a broad range of compounds, including fragile molecules, directly from surfaces, with improved charge state and fragmentation efficiency.
Implementation Method 1
The ionizing matrix in the sample is then sublimed or evaporated to produce gas-phase positive or negative ions of the analyte
Implementation Method 2
The ionizing matrix in the sample is then sublimed or evaporated to produce gas-phase positive or negative ions of the analyte
Implementation Method 3
certain matrix compounds produce analyte ions when a mixture of the matrix compound and the analyte is exposed to vacuum conditions
Data Source
AI summary
The invention provides ionizing matrix compounds. These compounds are useful for mass spectrometry and ion mobility spectrometry as ionizing matrices facilitating transfer of diverse classes of analyte compounds from solid or solution states to gas-phase ions.