Description

Polydiacetylene is a conjugated polymer known for its unique optical and electronic properties, including a distinctive colorimetric response to external stimuli. This material is of significant commercial interest for its ability to act as a highly sensitive, reversible sensor platform. It is primarily utilized in advanced material science and nanotechnology applications where precise detection and signaling are required. Industries developing smart packaging, biosensors, and security features find this compound particularly valuable.

Application

• Biosensor Development: Used as the active sensing layer in colorimetric and fluorescent biosensors for the detection of pathogens, viruses, and specific biomolecules.
• Smart Packaging & Labeling: Incorporated into films and inks to create time-temperature indicators or freshness sensors for food and pharmaceutical products.
• Security & Anti-Counterfeiting: Employed in inks and coatings for documents, currency, and high-value goods due to its irreversible color change upon specific triggers.
• Chemical Sensing Arrays: Serves as a key component in electronic nose systems and sensor arrays for detecting volatile organic compounds (VOCs) and environmental toxins.
• Photonic & Electronic Devices: Investigated for use in non-linear optical devices, field-effect transistors (FETs), and other organic electronic components.
• Research & Development: A critical material in academic and industrial R&D for studying polymer physics, supramolecular assembly, and stimulus-responsive materials.

Basic Information

Item	Detail
Product Name	Polydiacetylene
CAS No.	27987-87-7
Molecular Formula	(C≡C-C≡C)n (Representative monomer unit varies)
Molecular Weight	Polymer - Weight varies by degree of polymerization
Synonyms	PDA; Poly(diacetylene); Polydiyne; 1,3-Butadiyne, homopolymer; Diacetylene polymer; Conjugated polymer from diacetylene; Carbynoid polymer
EINECS	Contact for details

Quality Control

Our Polydiacetylene is produced and tested under rigorous quality management protocols to ensure batch-to-batch consistency and performance reliability. Quality is assessed through parameters including polymerization degree, color transition properties, and purity. A comprehensive Certificate of Analysis (COA) detailing specific test results is provided with each shipment to support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (typically 15-25°C). Minimize exposure to heat and moisture to maintain the polymer's stability and sensing performance.

Specification

Item	Specification
Appearance	Blue to purple powder or film
Identification (IR)	Conforms to structure
Color Transition	Blue to red upon stimulus (e.g., heat, pH change)
Solubility	Varies by side-chain modification (typically in select organic solvents)
Thermal Stability	Up to specified temperature (varies by grade)

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.