Skip to Content
Merck
All Photos(1)

Key Documents

View All Documentation

336408

Sigma-Aldrich

trans-4-[4-(Dimethylamino)styryl]-1-methylpyridinium iodide

Dye content 98 %

Synonym(s):

(E )-4-[4-(Dimethylamino)styryl]-1-methylpyridinium iodide, Pyridinium, 4-[2-[4-(dimethylamino)phenyl]ethenyl]-1-methyl-, iodide,

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

Empirical Formula (Hill Notation):
C16H19IN2
CAS Number:
68971-03-9
Molecular Weight:
366.24
MDL number:
MFCD00031907
UNSPSC Code:
12352103
PubChem Substance ID:
57648873
NACRES:
NA.23

composition

Dye content, 98%

mp

254-256 °C (lit.)

λmax

475 nm

SMILES string

[I-].[H]\C(=C(\[H])c1cc[n+](C)cc1)c2ccc(cc2)N(C)C

InChI

1S/C16H19N2.HI/c1-17(2)16-8-6-14(7-9-16)4-5-15-10-12-18(3)13-11-15;/h4-13H,1-3H3;1H/q+1;/p-1

InChI key

UJNFDSOJKNOBIA-UHFFFAOYSA-M

Related Categories

General description

trans-4-[4-(Dimethylamino)styryl]-1-methylpyridinium iodide (DASP) is a hemicyanine dye that can be used as a fluorescence probe. Its fluorescent property can be tuned by adjusting the pH of the solution. It can be photoexcited for internal twisting that forms intermolecular charge transfer state.
trans-4-[4-(dimethylamino)-styryl]-1-methylpyridinium iodide (DASPI) is a hemicyanine dye.

Application

DASP can be used to characterize the fluorescence of zeolite crystals which can further be used in the development of photofunctional materials.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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

Excited-state photophysics and dynamics of a hemicyanine dye in AOT reverse micelles
Kim J and Lee M
The Journal of Physical Chemistry A, 103(18), 3378-3382 (1999)
Groove binding of a styrylcyanine dye to the DNA double helix: the salt effect
Kumar CV, et al.
Journal of Photochemistry and Photobiology A: Chemistry, 74(2-3), 231-238 (1993)
Katja Jansen et al.
Macromolecular bioscience, 19(2), e1800412-e1800412 (2018-12-15)
The increasing prevalence of end-stage renal disease and persistent shortage of donor organs call for alternative therapies for kidney patients. Dialysis remains an inferior treatment as clearance of large and protein-bound waste products depends on active tubular secretion. Biofabricated tissues
Large fluorescence enhancement of a hemicyanine by supramolecular interaction with cucurbit [6] uril and its application as resettable logic gates
Li Z, et al.
Dyes and Pigments, 93(1-3), 1401-1407 (2012)
Excited-State Photophysics and Dynamics of a Hemicyanine Dye in AOT Reverse Micelles
Kim J and Lee M
The Journal of Physical Chemistry A, 103 (18), 3378?3382-3378?3382 null
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