5,5′′′′-Bis(2′′′′′,2′′′′′-dicyanovinyl)-2,2′:5′,2̸

CAS 1256724-81-8C28H12N4S5Organic & Printed Electronics

5,5′′′′-Bis(2′′′′′,2′′′′′-dicyanovinyl)-2,2′:5′,2̸ (CAS: 1256724-81-8) is a sophisticated organic semiconductor with a molecular weight of 564.75 g/mol. This material is primarily utilised in advanced materials science research, particularly for organic electronics. It serves as a key component in the development of high-efficiency organic photovoltaic (OPV) devices and organic field-effect transistors (OFETs), contributing to the advancement of printed and flexible electronics.

IUPAC: 2,2′-Bis(2,2-dicyanovinyl)-quinquethiophene,2,2′-[2,2′:5′,2′′:5′′,2′′′:5′′′,2′′′′-Quinquethien-5,5′′′′- diylbis(methane-1-yl-1-ylidine)]dimalononitrile
Synonyms: 2&#8242:5&#8242,2&#824,1256724-81-8, C28H12N4S5, 2,2′-Bis(2,2-dicyanovinyl)-quinquethiophene,2,2′-[2,2′:5′,2′′:5′′,2′′′:5′′′,2′′′′-Quinquethien-5,5′′′′- diylbis(methane-1-yl-1-ylidine)]dimalononitrile

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5,5′′′′-Bis(2′′′′′,2′′′′′-dicyanovinyl)-2,2′:5′,2̸ (C28H12N4S5) — chemical structure, CAS 1256724-81-8; Materials Science, fine chemical supplied by Tech Serve Solutions

Donor MaterialsMaterials ScienceSmall Molecules

01 /Applications

Organic Photovoltaics (OPVs)

This compound acts as a donor material in the fabrication of small-BHJ solar cells. A representative device structure (ITO/C60/DCV5T: C60/BPAPF/Spiro-NPB/Al) achieved a short-circuit current density (JSC) of 11.1 mA/cm², an open-circuit voltage (VOC) of 0.97 V, and a power conversion efficiency (PCE) of 5.2%.

Organic Field-Effect Transistors (OFETs)

As a p-type organic semiconductor, this material is investigated for its potential in OFET applications. Its molecular structure is designed to facilitate charge transport, making it suitable for research into next-generation electronic devices.

Materials Science Research

The compound is utilised in broader materials science investigations, focusing on the development of novel organic electronic materials. Its properties are of interest for applications requiring specific electronic or optoelectronic characteristics.

02 /Properties

Molecular weight	564.75
Empirical formula	C28H12N4S5
Assay	≥97%
Form	powder
Application	VAC-processed single high-efficiency Small-BHJ solar cell:OPV Device Structure: ITO/C60/DCV5T: C60/BPAPF/Spiro-NPB/Al• JSC = 11.1 mA/cm2• VOC = 0.97 V• FF = 0.49• PCE = 5.2%
Melting point	283-286 °C

03 /Identifiers & registry

CAS number

1256724-81-8

MDL number

MFCD25976527

04 /Additional specifications

Absorption	530 nm in DMSO

05 /Quality & supply

Documentation

Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.

Supply & logistics

Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.

06 /Frequently asked questions

What is 5,5′′′′-Bis(2′′′′′,2′′′′′-dicyanovinyl)-2,2′:5′,2̸ used for?

This compound is primarily used in materials science research, particularly for developing organic photovoltaic (OPV) devices and organic field-effect transistors (OFETs).

What is the CAS number and formula for this compound?

The CAS number is 1256724-81-8 and the empirical formula (Hill notation) is C28H12N4S5.

What grade and purity does Tech Serve Solutions supply?

Tech Serve Solutions supplies this product with an assay of ≥97%. It is typically considered a research or technical grade material and is not represented as USP, BP, EP, or pharmaceutical grade.

How should 5,5′′′′-Bis(2′′′′′,2′′′′′-dicyanovinyl)-2,2′:5′,2̸ be handled safely?

Based on the provided data, this compound has a WGK Germany classification of 3, indicating it is hazardous to water. Appropriate safety precautions should be taken to avoid environmental release. Consult the Safety Data Sheet (SDS) for detailed handling and safety information.

Is this chemical available for international export?

Yes, Tech Serve Solutions specialises in the global supply and export of fine chemicals, pharmaceutical intermediates, and laboratory reagents.

How can I request a sample or quote?

To request a sample or quote, please contact our sales team through the TSS website or via direct inquiry, providing the product name and CAS number (1256724-81-8).