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Multifunctional Carbon Dots with Solid–Liquid State Orange Light Emission for Vitamin B12 Sensing, Cellular Imaging, and Red/White Light-Emitting Diodes
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2020-07-01 , DOI: 10.1021/acsanm.0c01003 Wei He 1 , Wenting Weng 1, 2 , Xiangying Sun 1 , Yujing Pan 3 , Xiaoyuan Chen 1 , Bin Liu 1 , Jiangshan Shen 1
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2020-07-01 , DOI: 10.1021/acsanm.0c01003 Wei He 1 , Wenting Weng 1, 2 , Xiangying Sun 1 , Yujing Pan 3 , Xiaoyuan Chen 1 , Bin Liu 1 , Jiangshan Shen 1
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In the current research work, safranine T (ST) was chosen to be the guest, and the preparation of carbon dots (CDs) was done by a one-step hydrothermal methodology with citric acid (CA) to be the precursor, besides the surface passivation species in the consequent host–guest CDs. In addition, the CDs that had high-luminescence properties were prepared in the solid and liquid states, respectable fluorescence quantum yield of 15.2% (liquid) and 39.9% (solid), which is higher as compared with the majority of the reported orange fluorescent CDs. Meanwhile, red light-emitting diodes (LEDs) were fabricated with the use of a combination of CDs and UV LED chips. The constructed white LEDs possess excellent white light properties with the Commission Internationale de L’Eclairage chromaticity coordinate of (0.33, 0.34), coupled with the normal correlated color temperature of 5347 K as well as elevated color rendering index of 81 (>80), which seems appropriate for indoor lighting. Moreover, vitamine B12 (VB12) has the potential of productively quenching the fluorescence of CDs on the basis of the inner filter effect. Besides that, the system possessed the elevated selectivity with regard to VB12 that had the detection limit of 60.78 nM, which could further have been illustrated in not just VB12 tablets but in vitamin drink and human serum samples as well. Moreover, the CDs with the positive biocompatibility as well as ignorable cytotoxicity were extended for sensing VB12 in the living cell. These properties suggest that CDs have immense potential in the field of sensors, cell imaging, and optical devices.
中文翻译：
固态碳橙色发光多功能碳点，用于维生素B12感测，细胞成像和红色/白色发光二极管
在当前的研究工作中，番红花T（ST）被选为客体，并且通过一步水热法以柠檬酸（CA）为前体，除表面以外，制备碳点（CD）。随之而来的宿主－客体CD中的钝化物种。此外，以固态和液态制备了具有高发光性能的CD，可观的荧光量子产率分别为15.2％（液体）和39.9％（固体），与大多数报道的橙色荧光相比更高CD。同时，结合CD和UV LED芯片制造了红色发光二极管（LED）。构造的白色LED具有出色的白光特性，国际照明委员会色度坐标为（0.33，0.34），加上正常的相关色温5347 K，以及显色指数提高到81（> 80），这似乎适合室内照明。此外，维生素B12（VB12）可能会基于内部过滤效果而有效地淬灭CD的荧光。除此之外，该系统对VB12的选择性更高，检测极限为60.78 nM，这不仅可以在VB12片剂中得到证实，而且在维生素饮料和人血清样品中也可以得到证明。此外，具有积极的生物相容性和可忽略的细胞毒性的CD扩展到了感测活细胞中的VB12。这些特性表明CD在传感器，细胞成像和光学设备领域具有巨大的潜力。
更新日期：2020-08-28
中文翻译：
固态碳橙色发光多功能碳点，用于维生素B12感测，细胞成像和红色/白色发光二极管
在当前的研究工作中，番红花T（ST）被选为客体，并且通过一步水热法以柠檬酸（CA）为前体，除表面以外，制备碳点（CD）。随之而来的宿主－客体CD中的钝化物种。此外，以固态和液态制备了具有高发光性能的CD，可观的荧光量子产率分别为15.2％（液体）和39.9％（固体），与大多数报道的橙色荧光相比更高CD。同时，结合CD和UV LED芯片制造了红色发光二极管（LED）。构造的白色LED具有出色的白光特性，国际照明委员会色度坐标为（0.33，0.34），加上正常的相关色温5347 K，以及显色指数提高到81（> 80），这似乎适合室内照明。此外，维生素B12（VB12）可能会基于内部过滤效果而有效地淬灭CD的荧光。除此之外，该系统对VB12的选择性更高，检测极限为60.78 nM，这不仅可以在VB12片剂中得到证实，而且在维生素饮料和人血清样品中也可以得到证明。此外，具有积极的生物相容性和可忽略的细胞毒性的CD扩展到了感测活细胞中的VB12。这些特性表明CD在传感器，细胞成像和光学设备领域具有巨大的潜力。
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