Nanomechanics of Poly(catecholamine) Coatings in Aqueous Solutions

被引：197

作者：

Lim, Chanoong ^{[1
]}

Huang, Jun ^{[2
]}

Kim, Sunjin ^{[3
,4
]}

Lee, Haeshin ^{[3
,4
]}

Zeng, Hongbo ^{[2
]}

Hwang, Dong Soo ^{[1
]}

机构：

[1] Pohang Univ Sci & Technol POSTECH, Sch Environm Sci & Engn, Div Integrat Biosci & Biotechnol, Sch Interdisciplinary Biosci & Bioengn, Pohang 790784, South Korea

[2] Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 2V4, Canada

[3] Korea Adv Inst Sci & Technol, Dept Chem, Grad Sch Nanosci & Technol WCU, Daejeon 305701, South Korea

[4] Korea Adv Inst Sci & Technol, KAIST Inst NanoCentury, Daejeon 305701, South Korea

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2016年 / 55卷 / 10期

基金：

加拿大自然科学与工程研究理事会; 新加坡国家研究基金会;

关键词：

adhesive strength; catecholamine; cation-; interaction; coatings; interactions; CATION-PI INTERACTIONS; POLY(ETHYLENE GLYCOL); SURFACE-CHEMISTRY; ADHESIVE; CATECHOL; RECOGNITION; HYDROGELS; MEDIA; DOPA;

D O I：

10.1002/anie.201510319

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Mussel-inspired self-polymerized catecholamine coatings have been widely utilized as a versatile coating strategy that can be applied to a variety of substrates. For the first time, nanomechanical measurements and an evaluation of the contribution of primary amine groups to poly(catecholamine) coatings have been conducted using a surface-forces apparatus. The adhesive strength between the poly(catecholamine) layers is 30-times higher than that of a poly(catechol) coating. The origin of the strong attraction between the poly(catecholamine) layers is probably due to surface salt displacement by the primary amine, - stacking (the quadrupole-quadrupole interaction of indolic crosslinks), and cation- interactions (the monopole-quadrupole interaction between positively charged amine groups and the indolic crosslinks). The contribution of the primary amine group to the catecholamine coating is vital for the design and development of mussel-inspired catechol-based coating materials.

引用

页码：3342 / 3346

页数：5

共 55 条

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