Poly Vinyl Cinnamate Absorption Photocycloaddition Polymer - Chinaprice: contact company for price
cinnamate) (PVCi) films undergo cross-linking due to [2 + 2]
photocycloaddition between cinnamoyl groups. Consequently, electronic
configuration of lateral polymer groups changes and also leads to the
drop of the refractive index in the visible range. This mechanism is
studied with regards to the level of the electronic absorption of
cinnamate centered at 278 nm. It acts on refractive index by shifting
the absorption UV band. Most of the time, this influence vanishes in the
near infrared region (NIR). It is due to antagonist phenomena acting at
the expense of the index lowering. The causes analysis leads us to
optimize the irradiation spectrum, providing higher index contrasts
between irradiated and nonirradiated area. We show that strong index
changes can be achieved in PVCi film, up to 2.5 10-2 even in the NIR,
enabling us, for example, to perform optical photoprinting waveguides
for telecommunication wavelengths (1300-1550 nm).
Poly Vinyl Cinnamate
For any questions and needs please contact us below
- Posted By: Yuancheng Pharmaceutical Company., Ltd.
- Phone: 862788320830
- Address: NO.496 Zhongshang Road, Wuchang, Wuhan, Hubei, 430, wuhan, China
- Website: http://www.ycphar.com/en
Published date: September 7, 2012 -
- Business Description: involved in international trade import export of goods, products, and services
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