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906808

Sigma-Aldrich

Water-soluble TPO based nanoparticle photoinitiator

contains ionic surfactant

Synonym(s):

Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide, TPO

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About This Item

UNSPSC Code:
12352005
NACRES:
NA.25

form

powder or solid

color

white to off-white

SMILES string

O=P(C1=CC=CC=C1)(C(C2=C(C)C=C(C)C=C2C)=O)C3=CC=CC=C3

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Application

The water-dispersible photoinitiator nanoparticle contains 10% (w/w) of the type I photoinitiator diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide (TPO). TPO is highly efficient but water-insoluble. This water-soluble TPO based photoinitiator enables rapid 3D printing of structures prepared in aqueous solutions while bringing environmental advantages by using low-energy curing systems and avoiding the need for solvents.

The extinction coefficient of the new water-dispersible nanoparticles of TPO is more than 300 times larger than the best and most used commercially available water-soluble photoinitiator, Irgacure 2959. The TPO nanoparticles absorb significantly in the range from 385 to 420 nm, making them suitable for use in commercially available, low-cost, light-emitting diode-based 3D printers and UV-curing devices.

Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Chronic 3 - Eye Dam. 1 - Repr. 2 - Skin Irrit. 2 - Skin Sens. 1

Storage Class Code

11 - Combustible Solids

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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3D printing of responsive hydrogels for drug-delivery systems
Magdassi S. et al.
Journal of 3D printing in medicine, 1(4), 219-229 (2017)
Amol A Pawar et al.
Science advances, 2(4), e1501381-e1501381 (2016-04-07)
In the absence of water-soluble photoinitiators with high absorbance in the ultraviolet (UV)-visible range, rapid three-dimensional (3D) printing of hydrogels for tissue engineering is challenging. A new approach enabling rapid 3D printing of hydrogels in aqueous solutions is presented on

Articles

Water-dispersible photoinitiator nanoparticles enable novel formulations for 3D bioprinting, tissue engineering, and device manufacturing.

Water-dispersible photoinitiator nanoparticles enable novel formulations for 3D bioprinting, tissue engineering, and device manufacturing.

Water-dispersible photoinitiator nanoparticles enable novel formulations for 3D bioprinting, tissue engineering, and device manufacturing.

Water-dispersible photoinitiator nanoparticles enable novel formulations for 3D bioprinting, tissue engineering, and device manufacturing.

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Tissue engineering fabricates tissues cultures from scaffolds, living cells, and biologically active molecules by simulating the microenvironment of the body to repair or replace damaged tissue.

Tissue engineering fabricates tissues cultures from scaffolds, living cells, and biologically active molecules by simulating the microenvironment of the body to repair or replace damaged tissue.

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