Laser-induced photochemistry of 4-nitroaromatic initiators of polymerization

被引：7

作者：

Costela, A

García-Moreno, I

García, O

Sastre, R

机构：

[1] CSIC, Inst Quim Fis Rocasolano, E-28006 Madrid, Spain

[2] Inst Ciencia & Tecnol Polimeros, E-28006 Madrid, Spain

来源：

CHEMICAL PHYSICS LETTERS | 2000年 / 322卷 / 3-4期

关键词：

D O I：

10.1016/S0009-2614(00)00421-8

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A structure-reactivity study on 4-nitro-1-naphthylamine (NNA) and N-acethyl-4-nitro-1-naphthylamine (ANNA), efficient photoinitiators of polymerization in the presence of N,N-dimethylaniline (DMA), was carried out applying time-resolved laser (337 nm) spectroscopy. The laser-induced phosphorescence of these initiators is efficiently quenched by DMA inducing the appearance of new emissions as result of radiationless processes. The spectral and temporal characteristics of these new bands together with their dependence on both the laser intensity and irradiation time allowed their assignation and provided evidence for the photosensitization process of DMA from the excited initiator to be the photoinitiation mechanism of polymerization. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：267 / 272

页数：6

共 14 条

[1] p-Nitronaphthylaniline in the presence of N,N-dimethylaniline as bimolecular photoinitiating system of polymerization [J].