Metal Coordination Polymer Networks for 1-MCP Adsorption
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Solution Overview
Problem
The volatility and flammability of 1-methylcyclopropene (1-MCP) pose challenges for its storage and handling, limiting its use in extending the shelf life of plant products by inhibiting ethylene responses, as existing methods are costly and inefficient due to the need for expensive molecular encapsulation agents like α-cyclodextrin.
Innovation Solution
Metal coordination polymeric networks (MCPNs) are used to adsorb 1-MCP, providing a cost-effective and stable means of storage and release, without the need for a 'lock and key' structure, allowing for safer handling and extended use in plant preservation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If 1-MCP is stored in gaseous state, then it can be used to inhibit ethylene responses in plants, but it cannot be stored for long periods due to volatility and oxidation
Solution Approach 1:
The patent embeds 1-MCP molecules within the porous structure of metal coordination polymeric networks, creating a nested configuration where the volatile gas is contained within the solid framework. This nesting approach allows long-term storage without requiring molecular encapsulation agents, resolving the contradiction between storage duration and chemical stability.
Solution Approach 2:
The patent utilizes porous metal coordination polymeric networks with controlled pore sizes to adsorb and retain 1-MCP molecules. The porous structure provides high surface area for adsorption while protecting the volatile 1-MCP from oxidation, enabling long-term stable storage of the gas-phase compound.
2Quantity of substance
If 1-MCP gas is compressed for storage, then storage density is improved, but explosion risk increases due to flammability
Solution Approach 1:
The patent employs porous MCPNs that can adsorb large quantities of 1-MCP gas within their internal pore structures, achieving high storage density without compression. The solid porous framework isolates the flammable gas molecules, eliminating explosion hazards while maintaining high storage capacity.
Solution Approach 2:
The patent creates composite structures where 1-MCP gas is integrated within the metal coordination polymeric network framework. This composite approach combines the high storage capacity of porous materials with the safety of solid-state containment, resolving the contradiction between storage density and explosion risk.
3Stability of the object's composition
If molecular encapsulation agents like α-cyclodextrin are used to store 1-MCP, then storage stability is improved, but cost and complexity increase
Solution Approach 1:
The patent changes the fundamental parameters of the storage system by transitioning from molecular encapsulation with organic compounds to inorganic metal coordination polymeric networks. This parameter change enables 1-MCP storage with enhanced stability while eliminating the need for complex molecular encapsulation agents, thereby reducing system complexity and cost.
Solution Approach 2:
The patent develops metal coordination polymeric networks that serve multiple functions: they provide structural stability for long-term storage, offer可调 pore sizes for different gas molecules, and enable controlled release of 1-MCP. This multi-functionality replaces the need for specialized molecular encapsulation agents, simplifying the overall system.
4Reliability
If 1-MCP is handled in gaseous form, then application to plants is effective, but handling safety and ease of operation deteriorate
Solution Approach 1:
The patent performs preliminary adsorption of 1-MCP gas onto metal coordination polymeric networks before application. This preliminary action converts the volatile gas into a stable solid complex that can be safely handled, transported, and stored. The 1-MCP is then released in controlled amounts directly at the application site, maintaining effectiveness while improving handling safety.
Solution Approach 2:
The patent introduces metal coordination polymeric networks as intermediary carriers between the 1-MCP gas source and the plant target. This intermediary material enables safe handling and transport of 1-MCP while ensuring controlled delivery to plants, resolving the contradiction between application effectiveness and handling ease.
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
MCPNs effectively adsorb and release 1-MCP, inhibiting ethylene responses in plants, extending shelf life while being more economical and stable than traditional cyclodextrin-based methods, with efficient retention and release characteristics.
Implementation Method 1
Metal coordination polymeric networks (MCPNs) are used to adsorb 1-MCP
Data Source
AI summary
Disclosed are adsorption complexes that include 1-methylcyclopropene (1-MCP) and a metal coordination polymer network (MCPN), wherein the MCPN is a porous material, and the 1-MCP is adsorbed into the MCPN. Also disclosed are kits for containing 1-MCP that include the adsorption complex in a 1-MCP-impermeable package. Also disclosed are methods of releasing 1-methylcyclopropene (1-MCP) from the kit that include the application of aqueous fluids, heat, and/or pressure.