Tri-ureasil gel as a multifunctional organic-inorganic hybrid matrix

被引：25

作者：

Molina, Eduardo Ferreira ^{[1
]}

Marcal, Liziane ^{[1
]}

Pereira de Carvalho, Hudson Wallace ^{[2
]}

Nassar, Eduardo Jose ^{[1
]}

Ciuffi, Katia Jorge ^{[1
]}

机构：

[1] Univ Franca, BR-14404600 Franca, SP, Brazil

[2] Karlsruhe Inst Technol, D-76131 Karlsruhe, Germany

来源：

POLYMER CHEMISTRY | 2013年 / 4卷 / 05期

基金：

巴西圣保罗研究基金会;

关键词：

MESOPOROUS SILICA SPHERES; ION-CONDUCTING ORMOLYTES; DRUG-RELEASE; PPO HYBRID; NANOCOMPOSITES; DELIVERY; DERIVATIVES; SYSTEMS;

D O I：

10.1039/c2py21049e

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

We report on a novel transparent, flexible, rubbery, and insoluble tri-ureasil organic-inorganic hybrid material with multifunctional characteristics and potential application in drug delivery, water purification, and photochromic materials. We obtained the tri-ureasil gels by the one-pot sol-gel route using 3-isocyanatopropyltriethoxysilane and glyceryl poly(oxypropylene) triamine of molecular weight 5000 g mol(-1) (Jeffamine (R) T5000). This approach generated a silica backbone covalently connected with poly(oxyalkylene) chains PPO(OCH-CH3CH2)(n) through urea bridges. We characterized the obtained materials by DSC, swelling tests, XRD, Si-29 NMR, and small-angle X-ray scattering (SAXS). The results attested that the tri-ureasil hybrids are potentially applicable as photochromic devices, drug delivery systems, and adsorbents of pollutants from contaminated waters.

引用

页码：1575 / 1582

页数：8

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