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通过超临界二氧化碳沉积5,6-二羟基吲哚薄膜对二氧化硅气凝胶进行真黑素包覆

Eumelanin Coating of Silica Aerogel by Supercritical Carbon Dioxide Deposition of a 5,6-Dihydroxyindole Thin Film.

作者信息

Caputo Giuseppe, Bonadies Irene, Migliaccio Ludovico, Caso Maria Federica, Pezzella Alessandro

机构信息

Dipartimento Dell'Innovazione Industriale e Digitale-Ingegneria Chimica, Gestionale, Meccanica e Informatica, Università di Palermo, 90133 Palermo, Italy.

Institute for Polymers, Composites and Biomaterials (IPCB), CNR, Via Campi Flegrei 34, I-80078 Pozzuoli (Na), Italy.

出版信息

Materials (Basel). 2018 Aug 21;11(9):1494. doi: 10.3390/ma11091494.

DOI:10.3390/ma11091494
PMID:30134602
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6165250/
Abstract

Eumelanin integration in silica aerogel (SA) was achieved via supercritical adsorption of 5,6-dyhydroxyindole (DHI) from CO₂. Notably, after the supercritical treatment, DHI evolved towards spontaneous polymerization, which resulted in uniform pigment development over the SA. The new material was characterized for its morphological and physicochemical properties, disclosing the formation of a eumelanin-like coating, as confirmed by UV⁻vis and electron paramagnetic resonance (EPR) spectroscopy.

摘要

通过从二氧化碳中对5,6 - 二羟基吲哚（DHI）进行超临界吸附，实现了真黑素在二氧化硅气凝胶（SA）中的整合。值得注意的是，经过超临界处理后，DHI向自发聚合方向发展，这导致在SA上形成均匀的色素。对这种新材料的形态和物理化学性质进行了表征，紫外可见光谱和电子顺磁共振（EPR）光谱证实形成了类似真黑素的涂层。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aeb9/6165250/9300e347dd61/materials-11-01494-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aeb9/6165250/68fe99320bd4/materials-11-01494-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aeb9/6165250/aac4232caa02/materials-11-01494-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aeb9/6165250/34e272e0480f/materials-11-01494-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aeb9/6165250/9300e347dd61/materials-11-01494-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aeb9/6165250/68fe99320bd4/materials-11-01494-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aeb9/6165250/aac4232caa02/materials-11-01494-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aeb9/6165250/34e272e0480f/materials-11-01494-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aeb9/6165250/9300e347dd61/materials-11-01494-g004.jpg

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本文引用的文献

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J Mater Chem B. 2015 Jul 7;3(25):5070-5079. doi: 10.1039/c5tb00343a. Epub 2015 Apr 27.
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Aerogels-Airy Materials: Chemistry, Structure, and Properties.气凝胶——轻盈的材料：化学、结构与性质
Angew Chem Int Ed Engl. 1998 Feb 2;37(1-2):22-45. doi: 10.1002/(SICI)1521-3773(19980202)37:1/2<22::AID-ANIE22>3.0.CO;2-I.
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Surface-Functionalization of Nanostructured Cellulose Aerogels by Solid State Eumelanin Coating.
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Melanins and melanogenesis: from pigment cells to human health and technological applications.黑色素与黑色素生成：从色素细胞到人类健康及技术应用
Pigment Cell Melanoma Res. 2015 Sep;28(5):520-44. doi: 10.1111/pcmr.12393.
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Tailoring mechanical properties of aerogels for aerospace applications.为航空航天应用定制气凝胶的机械性能。
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Chemical and structural diversity in eumelanins: unexplored bio-optoelectronic materials.真黑素中的化学与结构多样性：未被探索的生物光电子材料
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