Metal Tin Cyclized Perylene Diimide for Red Shifted Absorption
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Solution Overview
Problem
Current perylene diimide derivatives do not incorporate metal atoms at the bay position, limiting the exploration of their optical properties and applications in optoelectronic materials.
Innovation Solution
A metal tin cyclized perylene diimide derivative is developed, with a specific structure formula and a method for preparation involving the reaction of a compound A with hexa-n-butyl ditin, catalysts, and organic solvents, which introduces a metal tin element to form a five-membered ring, enhancing its optoelectronic properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal atoms are introduced at the bay position of perylene diimide to form heterocycles, then the optical properties and electronic structure are regulated and improved, but currently no metal tin cyclization has been achieved at the bay position, representing a gap in existing research
Solution Approach 1:
The patent introduces metal tin atoms at the bay position of perylene diimide, changing the chemical composition parameter from non-metallic to metallic atoms. This parameter change enables regulation of optical properties and electronic structure, achieving the desired improvement while overcoming the limitation of previous non-metallic-only heterocycle formation
Solution Approach 2:
The patent creates a composite structure by combining metal tin atoms with the organic perylene diimide framework to form a heterocyclic compound. This composite approach integrates the beneficial properties of both the organic semiconductor backbone and the metal center, enabling enhanced optoelectronic performance
2Reliability
If a five-membered ring is formed by introducing metal tin at the bay position, then the conjugation plane is increased and electronic structure is regulated, but the synthesis complexity increases due to the need for specific reaction conditions with hexa-n-butyl ditin and catalysts
Solution Approach 1:
The patent employs preliminary action by pre-functionalizing the perylene diimide with bromine at the bay position before introducing the metal tin. This preliminary bromination step facilitates the subsequent metalation reaction, making the synthesis more controllable and efficient despite the multi-step nature of the process
Solution Approach 2:
The patent uses catalysts as intermediaries to facilitate the reaction between the brominated perylene diimide and hexa-n-butyl ditin. These catalysts mediate the complex metalation process, enabling the formation of the tin-containing heterocycle under controlled conditions and reducing the overall synthesis complexity
3Reliability
If metal tin is cyclized at the bay position, then the ultraviolet-visible absorption spectrum shows significant red shift and triplet state generation increases, but the cytotoxicity concerns arise that need to be addressed for photodynamic therapy applications
Solution Approach 1:
The patent applies local quality by introducing the metal tin specifically at the bay position of the perylene diimide molecule, creating a localized modification that enhances optical properties (red shift and triplet state generation) while maintaining the overall molecular structure. This localized approach allows optimization of photodynamic properties with controlled cytotoxicity effects
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
The derivative exhibits a significant red shift in ultraviolet-visible absorption spectrum, increased triplet state generation, and lower cytotoxicity, making it suitable for photodynamic therapy and catalytic oxidation reactions, with potential applications in solar cells, light-emitting diodes, and organic field effect transistors.
Implementation Method 1
introduction of heteroatoms (including selenium atoms, nitrogen atoms, oxygen atoms, and silicon atoms) at the bay position of perylene diimide to form a ring
Implementation Method 2
The derivative exhibits a significant red shift in ultraviolet-visible absorption spectrum
Implementation Method 3
increased triplet state generation, and lower cytotoxicity, making it suitable for photodynamic therapy
Data Source
AI summary
A metal tin cyclized perylene diimide derivative, having a structure formula of:where R1 and R2 are each independently selected from a hydrogen atom or a group containing or not containing a substituent. The group containing or not containing a substituent is an alkyl having between 1 and 60 carbon atoms, an alkoxy having between 1 and 60 carbon atoms, a cycloalkyl having between 3 and 60 carbon atoms, an aryl having between 5 and 60 atoms, an alkylaryl having between 1 and 60 carbon atoms, an alkylheteroaryl having between 1 and 60 carbon atoms, an alkylheterocyclyl having between 1 and 60 carbon atoms, an alkyleneoxyalkyl having between 1 and 60 carbon atoms, an alkyleneoxyaryl having between 1 and 60 carbon atoms, an alkyleneoxyheteroaryl having between 1 and 60 carbon atoms, or an alkyleneoxyheterocyclyl having between 1 and 60 carbon atoms.