Tanwar Swati, Sharma Bhagwati, Kaur Vishaldeep, Sen Tapasi
Institute of Nano Science and Technology Mohali, Phase-10, Sector-64 Punjab-160062 India
RSC Adv. 2019 May 21;9(28):15997-16006. doi: 10.1039/c9ra02012h. eCollection 2019 May 20.
White light emitting mixture (WLEM) was produced by controlled mixing of blue emitting silicon quantum dots (Si QDs) and orange red emitting gold nanoclusters (Au NCs). The chromaticity color co-ordinate of the WLEM studied using CIE (Commission Internationale del'Eclairage) diagram was found to be (0.33, 0.32), which was very close to that of perfect white light emitting source. The WLEM can also be achieved in the form of gel, solid and film with nearly the same CIE co-ordinates which enhances its utility as white light-emitting source in solid state devices. The reversible and thermo-responsive behaviour of the WLEM broadens its application in thermal sensing. Furthermore, the system was found to be showing fast, sensitive and selective detection of Hg ions and thiol containing amino acid cysteine.
通过将发射蓝光的硅量子点（Si QDs）和发射橙红色光的金纳米团簇（Au NCs）进行可控混合，制备出了白光发射混合物（WLEM）。使用国际照明委员会（CIE）色度图研究发现，该WLEM的色度坐标为(0.33, 0.32)，与完美白光发射源的色度坐标非常接近。WLEM还可以制成凝胶、固体和薄膜形式，其CIE坐标几乎相同，这增强了它在固态器件中作为白光发射源的实用性。WLEM的可逆和热响应行为拓宽了其在热传感方面的应用。此外，该系统还能快速、灵敏且选择性地检测汞离子和含硫醇的氨基酸半胱氨酸。
