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首页> 外文期刊>Advanced Functional Materials >Building-Block Diversity in Polydopamine Underpins a Multifunctional Eumelanin-Type Platform Tunable Through a Quinone Control Point
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Building-Block Diversity in Polydopamine Underpins a Multifunctional Eumelanin-Type Platform Tunable Through a Quinone Control Point

机译：聚多巴胺中的构建基多样性支持可通过醌控制点调节的多功能Eumelanin型平台。

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摘要

Rational approaches to engineering polydopamine films with tailored properties for surface coating and functionalization are currently challenged by the lack of detailed information about the polymer structure and the mechanism of buildup. Using an integrated chemical and spectroscopic approach enables the demonstration of: a) a three-component structure of polydopamine, comprising uncyclized (catecholamine) and cyclized (indole) units, as well as novel pyrrolecarboxylic acid moieties; b) remarkable variations in the relative proportions of the cyclized and uncyclized units with starting dopamine concentration; c) the occurrence of oligomer components up to the tetramer level; d) the covalent incorporation of Tris buffer; and e) the role of dopamine quinone as a crucial control point for directing the buildup pathways and tuning the properties. The importance of the uncyclized amine-containing units in polydopamine adhesion is also highlighted. The proper selection of substrate concentration and buffer is thus proposed as a practical means of tailoring polydopamine functionality via control of competing pathways downstream of dopamine quinone.
机译：目前，由于缺乏有关聚合物结构和形成机理的详细信息，对具有定制特性的表面涂层和功能化工程聚多巴胺薄膜的合理方法提出了挑战。使用一体化的化学和光谱方法可以证明：a）聚多巴胺的三组分结构，包括未环化的（儿茶酚胺）和环化的（吲哚）单元，以及新型的吡咯羧酸部分； b）在多巴胺起始浓度下，环化和非环化单元的相对比例有显着变化； c）直至四聚体水平的低聚物组分的出现； d）Tris缓冲液的共价结合； e）多巴胺醌作为指导建立途径和调节性能的关键控制点的作用。还强调了未环化的含胺单元在聚多巴胺粘附中的重要性。因此，提出了适当选择底物浓度和缓冲液作为通过控制多巴胺醌下游竞争路径来调节聚多巴胺官能度的实用手段。

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  • 来源
    《Advanced Functional Materials》 |2013年第10期|1331-1340|共10页
  • 作者

    Nicola F. Delia Vecchia; Roberto Avolio; Michela Alfe; Maria E. Errico; Alessandra Napolitano; Marco dlschia;

  • 作者单位

    Department of Chemical Sciences University of Naples Federico 11 Via Cintia 4, 1-80126 Naples, Italy;

    Institute of Chemistry and Technology of Polymers National Council of Research (CNR) via Campi Flegrei 34, Pozzuoli 1- 80078, Italy;

    Combustion Research Institute National Council of Research (CNR) Piazzale V. Tecchio 80, 1-80125 Naples, Italy;

    Institute of Chemistry and Technology of Polymers National Council of Research (CNR) via Campi Flegrei 34, Pozzuoli 1- 80078, Italy;

    Department of Chemical Sciences University of Naples Federico 11 Via Cintia 4, 1-80126 Naples, Italy;

    Department of Chemical Sciences University of Naples Federico 11 Via Cintia 4, 1-80126 Naples, Italy;

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