Skip to Content
MilliporeSigma
All Photos(2)

Key Documents

View All Documentation

328510

Sigma-Aldrich

4′-Pentyl-4-biphenylcarbonitrile

liquid crystal (nematic), 98%

Synonym(s):

4-Cyano-4-pentylbiphenyl, 4-Pentyl-4-cyanobiphenyl, 5CB

Sign Into View Organizational & Contract Pricing
All Photos(2)

About This Item

Linear Formula:
CH3(CH2)4C6H4C6H4CN
CAS Number:
40817-08-1
Molecular Weight:
249.35
EC Number:
255-093-2
MDL number:
MFCD00036350
UNSPSC Code:
12352103
PubChem Substance ID:
24859381
NACRES:
NA.23

Quality Level

100

assay

98%

form

liquid crystal (nematic)

refractive index

n20/D 1.532 (lit.)

bp

140-150 °C/0.5 mmHg (lit.)

density

1.008 g/mL at 25 °C (lit.)

SMILES string

CCCCCc1ccc(cc1)-c2ccc(cc2)C#N

InChI

1S/C18H19N/c1-2-3-4-5-15-6-10-17(11-7-15)18-12-8-16(14-19)9-13-18/h6-13H,2-5H2,1H3

InChI key

HHPCNRKYVYWYAU-UHFFFAOYSA-N

General description

4′-Pentyl-4-biphenylcarbonitrile (5CB) is a nematic liquid crystal. 5CB undergoes phase transition from crystalline to nematic then to isotropic state at 18oC and 35oC respectively. It may be produced by modifying biphenyl.2

Application

Attaching 5CB to an aqueous-liquid crystal interface by redox active surfactant has been investigated.

pictograms

Exclamation mark
GHS07

signalword

Warning

hcodes

H317

Hazard Classifications

Skin Sens. 1

Storage Class

10 - Combustible liquids

wgk_germany

WGK 3

ppe

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Active Control of the Anchoring of 4`-Pentyl-4-cyanobiphenyl (5CB) at an Aqueous?Liquid Crystal Interface By Using a Redox-Active Ferrocenyl Surfactant
Brake JM, et al.
Langmuir, 19 (21), 8629?8637-8629?8637 null
H A Fuster et al.
Science advances, 6(25), eabb1327-eabb1327 (2020-07-01)
Asymmetric interactions such as entropic (e.g., encoded by nonspherical shapes) or surface forces (e.g., encoded by patterned surface chemistry or DNA hybridization) provide access to functional states of colloidal matter, but versatile approaches for engineering asymmetric van der Waals interactions
Zongdai Liu et al.
Soft matter, 15(28), 5638-5643 (2019-06-28)
For nematic liquid crystals (LCs), a disclination line is formed when the director of the LCs changes abruptly. In this study, we demonstrate an approach to form dynamic disclination lines by flowing the nematic liquid crystal 4-cyano-4'-pentylbiphenyl (5CB) in rectangular
Jeffrey M Brake et al.
Langmuir : the ACS journal of surfaces and colloids, 23(16), 8497-8507 (2007-06-28)
We report a study of the interactions of proteins with monolayers of phospholipids (D/L-alpha-dipalmitoyl phosphatidylcholine and L-alpha-dilauroyl phosphatidylcholine) spontaneously assembled at an interface between an aqueous phase and a 20-microm-thick film of a nematic liquid crystal (4'-pentyl-4-cyanobiphenyl). Because the orientation
Beom-Kyu Lee et al.
Scientific reports, 7(1), 15916-15916 (2017-11-23)
It is generally thought that colloidal particles in a nematic liquid crystal do not generate the first multipole term called deformation elastic charge as it violates the mechanical equilibrium. Here, we demonstrate theoretically and experimentally that this is not the
View All Related Papers

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service