Rivera Tito Harry Anderson, Hernández-Sosa Gerardo, Romero-Nieto Carlos, Regulska Elzbieta, Jürgensen Nils, Zimmermann Johannes, Salazar-Salinas Karim, Quintana Caceda María Esther
Center for the Development of Advanced Materials and Nanotechnology, National University of Engineering Av. Tupac Amaru 210 Lima 25 Peru
Light Technology Institute, Karlsruhe Institute of Technology Engesserstr. 13 76131 Karlsruhe Germany.
RSC Adv. 2020 Oct 6;10(60):36695-36703. doi: 10.1039/d0ra05543c. eCollection 2020 Oct 1.
The molecule 2'--apiosyl-6'--crotonic acid-betanin (called Achkiy) was obtained after an ecofriendly and low-cost purification process of the extract from the ayrampo seed cuticle. Results from EDS give us an idea of the organic elements present in the ayrampo cuticle layer composed of carbon, oxygen and nitrogen. Further characterization analysis of ayrampo extract by Fourier Transform Infrared Spectrophotometry (FTIR) corroborated the presence of characteristic functional groups corresponding to carboxyl, carbonyls, hydroxyls and secondary amines. On the other hand, we have confirmed by absortion peak the glucose, apiosyl, crotonic acid and betanin at 227 nm, 276 nm, 291 nm and 534 nm bands respectively. Mass Spectrometry (MS) characterization was used finally to identify the electroactive Achkiy molecule. This molecule was tested in an Organic Light Emitting Diode (OLED) achieving a luminance of 4.8 Cd m when bias voltage of 16.5 V and a current of 34.1 mA was applied. In addition, the irradiance generated by the Achkiy layer reaches a value of ≈ 113.3 μW m emitting light with a ≈ 390.10 nm. These preliminary results report an interesting molecule extracted from a natural pigment wich emits light in the blue region.
通过对阿扬波种子表皮提取物进行环保且低成本的纯化过程，得到了分子2'-芹菜糖基-6'-巴豆酸-甜菜红素（称为Achkiy）。能谱分析结果让我们了解到阿扬波表皮层中存在的有机元素，包括碳、氧和氮。通过傅里叶变换红外光谱法（FTIR）对阿扬波提取物进行的进一步表征分析证实了对应羧基、羰基、羟基和仲胺的特征官能团的存在。另一方面，我们通过吸收峰分别在227nm、276nm、291nm和534nm波段确认了葡萄糖、芹菜糖基、巴豆酸和甜菜红素。最后使用质谱（MS）表征来鉴定电活性Achkiy分子。当施加16.5V的偏置电压和34.1mA的电流时，该分子在有机发光二极管（OLED）中进行测试，实现了4.8坎德拉每平方米的亮度。此外，Achkiy层产生的辐照度达到约113.3微瓦每平方米，发射波长约为390.10nm的光。这些初步结果报道了一种从天然色素中提取的有趣分子，其在蓝色区域发光。
