Permatasari Fitri Aulia, Nakul Fitriyanti, Mayangsari Tirta Rona, Aimon Akfiny Hasdi, Nuryadin Bebeh Wahid, Bisri Satria Zulkarnaen, Ogi Takashi, Iskandar Ferry
Department of Electrical Engineering, Politeknik Negeri Batam Jalan Ahmad Yani Batam Riau 29461 Indonesia.
Department of Electrical Engineering, Politeknik Negeri Batam Batam Indonesia.
RSC Adv. 2021 Dec 16;11(63):39917-39923. doi: 10.1039/d1ra07290k. eCollection 2021 Dec 13.
Tunable emissive solid-state carbon nanoparticles (CNPs) have been successfully synthesized by a facile synthesis through microwave irradiation. Modulating microwave interaction with the sample to generate abrupt localized heating is a long-term challenge to tailor the photoluminescence properties of CNPs. This study systematically revealed that the sample temperature through microwave irradiation plays a crucial role in controlling the photoluminescence properties over other reaction conditions, such as irradiation time and microwave duty cycle. When the sample temperature reached 155 °C in less than three minutes, the CNP sample exhibited a green-yellowish emission with the highest quantum yield (QY) of 14.6%. Time-dependent density functional theory (TD-DFT) study revealed that the tunable photoluminescence properties of the CNPs can possibly be ascribed to their nitrogen concentrations, which were dictated by the sample temperature during irradiation. This study opens up a promising route for the well-controlled synthesis of luminescent CNPs through microwave irradiation.
通过微波辐射的简便合成方法成功合成了可调谐发光固态碳纳米颗粒（CNPs）。调节微波与样品的相互作用以产生突然的局部加热，是调整CNPs光致发光特性的长期挑战。本研究系统地揭示，与其他反应条件（如辐照时间和微波占空比）相比，微波辐射下的样品温度在控制光致发光特性方面起着关键作用。当样品温度在不到三分钟内达到155°C时，CNP样品呈现出绿黄色发射，最高量子产率（QY）为14.6%。含时密度泛函理论（TD-DFT）研究表明，CNPs的可调谐光致发光特性可能归因于其氮浓度，而氮浓度由辐照期间的样品温度决定。本研究为通过微波辐射精确控制合成发光CNPs开辟了一条有前景的途径。
