Mesoporous Acrylamide Polymer Solid-State Fluorescence
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Solution Overview
Problem
Conjugated and unconjugated polymeric fluorescent materials face limitations in fluorescence efficiency in the solid state, making them unsuitable for applications in organic light emitting diodes and solar cells, and they typically emit light of a specific wavelength, requiring multiple substances for white or blue light emission.
Innovation Solution
A mesoporous acrylamide polymer with a specific repeating unit structure that allows for dense stacking of arylene groups, enabling broad wavelength light absorption and efficient fluorescence emission across the visible spectrum, even in solid forms like thin films and fibers, through radical polymerization and RAFT polymerization processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional conjugated polymers are used as fluorescent materials, then they show fluorescence in liquid state, but fluorescence efficiency drops significantly in solid state
Solution Approach 1:
The patent introduces a porous structure within the polymer matrix that prevents molecular aggregation and maintains molecular spacing, thereby preserving fluorescence efficiency in the solid state while enabling practical device applications
Solution Approach 2:
The patent creates a composite fluorescent material combining conjugated polymer chains with a porous matrix structure, integrating the fluorescent properties of conjugated polymers with the structural benefits of porous materials to maintain high fluorescence efficiency in solid state
2Adaptability or versatility
If multiple fluorescent substances are used to achieve white or blue light emission, then wavelength coverage improves, but device complexity and production process complexity increase
Solution Approach 1:
The patent designs a single polymeric fluorescent material capable of emitting across multiple wavelengths including blue and white light regions, eliminating the need for multiple separate fluorescent substances and simplifying device structure and production processes
3Reliability
If unconjugated isotactic polystyrene polymer with stacked phenyl groups is used, then fluorescence is achieved without conjugation, but production requires special catalysts and fluorescence level remains insufficient
Solution Approach 1:
The patent modifies the chemical structure parameters of the polymer by introducing specific side chains and controlling molecular architecture to achieve efficient fluorescence through conventional polymerization methods without requiring special catalysts or conditions
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 mesoporous acrylamide polymer exhibits high fluorescence efficiency and thermal stability, allowing it to be used as a standalone white or blue light-emitting substance in various devices with a simple production process, overcoming previous limitations in solid-state fluorescence and wavelength specificity.
Implementation Method 1
enabling broad wavelength light absorption and efficient fluorescence emission across the visible spectrum
Implementation Method 2
which can emit fluorescence with higher efficiency even in a solid state
Data Source
AI summary
The present invention relates to a polymeric fluorescent material, which comprises a novel acrylamide polymer so that it may emit fluorescence with higher efficiency and can be available especially for a white or blue light emitting material. The polymeric fluorescent material comprises a mesoporous acrylamide polymer including at least one repeating unit.