Carbon Nanoparticle Luminescence via Polymer Passivation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing luminescent nanoparticles, such as silicon and quantum dots, are expensive, complex to produce, and often toxic, limiting their use in large-scale applications and medical or biological contexts, while there is a need for inexpensive, abundant materials that can be easily scaled up to form large quantities of luminescent materials with unique properties.
Innovation Solution
Development of photoluminescent carbon nanoparticles with a carbon core smaller than 100 nm, passivated with polymers or biopolymers, and potentially embedded with metals, which can be formed through methods like laser ablation or electric arc discharge, enabling scalable production and biocompatibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If silicon nanoparticles or quantum dots are used as luminescent materials, then photoluminescence properties are achieved, but production cost increases and scalability decreases
Solution Approach 1:
The patent replaces expensive quantum dots and silicon nanoparticles with carbon dots that can be produced from inexpensive carbon-containing materials. The carbon dots achieve comparable photoluminescence properties while being vastly more cost-effective and scalable, embodying the principle of substituting expensive materials with cheaper alternatives that maintain functional performance
Solution Approach 2:
The patent changes the material composition parameter from silicon or semiconductor quantum dots to carbon-based materials. This parameter change enables production through simple carbonization processes of abundant carbon-containing materials, dramatically improving scalability and reducing cost while maintaining photoluminescence functionality
2Reliability
If quantum dots are used for luminescence, then desired optical characteristics are obtained, but material toxicity increases
Solution Approach 1:
The patent substitutes toxic heavy metal quantum dots (containing lead or cadmium) with carbon dots derived from carbon-containing materials. This substitution eliminates material toxicity while preserving photoluminescence properties, enabling safe use in medical and biological applications
Solution Approach 2:
The patent converts potentially harmful carbon-containing materials into beneficial luminescent carbon dots through controlled carbonization. The carbonization process transforms ordinary carbon sources into safe, non-toxic luminescent materials, turning potentially harmful substances into beneficial applications
3Reliability
If surface treatment is applied to silicon nanoparticles to achieve photoluminescence, then luminescence is obtained, but production complexity increases
Solution Approach 1:
The patent extracts the luminescence functionality from complex surface-treated silicon nanoparticles and achieves it directly through carbonization of carbon-containing materials. This eliminates the need for multiple surface treatment steps, reducing production complexity while maintaining photoluminescence
Solution Approach 2:
The patent enables carbon dots to self-organize and self-passivate during the carbonization process, eliminating the need for external surface treatment steps. The carbon dots automatically develop their luminescent properties and surface characteristics through the carbonization process itself, simplifying production
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 carbon nanoparticles exhibit strong luminescence, are environmentally and biologically compatible, and can be used in various applications, including detection and labeling, offering a cost-effective and scalable alternative to traditional luminescent materials.
Implementation Method 1
a photoluminescent nanoparticle that includes a carbon core
Implementation Method 2
Coupled to the carbon core can be a passivation agent
Implementation Method 3
forming a carbon core, for example via laser ablation of graphite
Implementation Method 4
electric arc discharge of a carbon powder
Data Source
AI summary
Disclosed are photoluminescent particles. The particles include a core nano-sized particle of carbon and a passivation agent bound to the surface of the nanoparticle. The passivation agent can be, for instance, a polymeric material. The passivation agent can also be derivatized for particular applications. For example, the photoluminescent carbon nanoparticles can be derivatized to recognize and bind to a target material, for instance a biologically active material, a pollutant, or a surface receptor on a tissue or cell surface, such as in a tagging or staining protocol.