3D visualization of additive occlusion and tunable full-spectrum fluorescence in calcite.
3D visualization of additive occlusion and tunable full-spectrum fluorescence in calcite.
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DOI：
10.1038/ncomms13524
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发表时间：
2016-11-18
影响因子：
16.6
通讯作者：
Meldrum, Fiona C.
中科院分区：
文献类型：
--
作者：
Green, David C.;Ihli, Johannes;Thornton, Paul D.;Holden, Mark A.;Marzec, Bartosz;Kim, Yi-Yeoun;Kulak, Alex N.;Levenstein, Mark A.;Tang, Chiu;Lynch, Christophe;Webb, Stephen E. D.;Tynan, Christopher J.;Meldrum, Fiona C.
从生物矿化到合成，有机添加剂提供了控制结晶过程的有效手段。有越来越多的证据表明，这些添加剂往往是封闭在晶格。这是一种创造纳米复合材料和调整物理性能的优雅方法。在这里，我们使用磺化荧光染料的掺入，以获得新的理解添加剂闭塞方解石（碳酸钙），并连接形态变化闭塞机制。我们证明，这些添加剂被纳入特定区域内，所定义的生长条件，并显示如何闭塞可以管理晶体形状的变化。荧光光谱和寿命成像显微镜也表明，染料在不同的区域内经历独特的局部环境。我们的策略，然后扩展到同时纳入染料的混合物，其荧光级联创建方解石纳米粒子，荧光白色。这为产生生物相容性和稳定的荧光纳米颗粒提供了一种简单的策略，其输出可以根据需要进行调整。 将有机客人引入晶体是定制其性质的方便方法。在这里，作者将荧光染料封闭在方解石中，以揭示添加剂可以占据晶体的不同区域，并策略性地嵌入绿色、蓝色和红色染料以产生白色荧光方解石。
From biomineralization to synthesis, organic additives provide an effective means of controlling crystallization processes. There is growing evidence that these additives are often occluded within the crystal lattice. This promises an elegant means of creating nanocomposites and tuning physical properties. Here we use the incorporation of sulfonated fluorescent dyes to gain new understanding of additive occlusion in calcite (CaCO3), and to link morphological changes to occlusion mechanisms. We demonstrate that these additives are incorporated within specific zones, as defined by the growth conditions, and show how occlusion can govern changes in crystal shape. Fluorescence spectroscopy and lifetime imaging microscopy also show that the dyes experience unique local environments within different zones. Our strategy is then extended to simultaneously incorporate mixtures of dyes, whose fluorescence cascade creates calcite nanoparticles that fluoresce white. This offers a simple strategy for generating biocompatible and stable fluorescent nanoparticles whose output can be tuned as required. Introducing organic guests to a crystal is a convenient way to tailor its properties. Here, the authors occlude fluorescent dyes within calcite to reveal that additives can occupy distinct zones of a crystal, and strategically embed green, blue, and red dyes to create white fluorescent calcite.
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影响因子：
16.6
作者：
Barbon, A;Bellinazzi, M;Rohl, AL
通讯作者：
Rohl, AL
影响因子：
3.8
作者：
Bracco, Jacquelyn N.;Grantham, Meg C.;Stack, Andrew G.
通讯作者：
Stack, Andrew G.
影响因子：
16.6
作者：
Ihli J;Wong WC;Noel EH;Kim YY;Kulak AN;Christenson HK;Duer MJ;Meldrum FC
通讯作者：
Meldrum FC
影响因子：
29.4
作者：
Brif, Anastasia;Ankonina, Guy;Pokroy, Boaz
通讯作者：
Pokroy, Boaz
影响因子：
15
作者：
Benedict, JB;Cohen, DE;Kahr, B
通讯作者：
Kahr, B