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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,

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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%

Quality Level

100

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)

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