Article
Chemistry, Physical
Yunyang Zhao, Bingchen He, Enshan Liu, Jielei Li, Liming Wang, Shi Chen, Yeqing Chen, Zhan'ao Tan, Kar Wei Ng, Shuangpeng Wang, Zikang Tang, Songnan Qu
Summary: A one-step synthesis method of solid-state emissive CDs was developed by introducing AlCl3 in citric acid and urea, leading to enhanced green emissions with a PLQY of 72.7% in the solid state through Al-based cross-linked polymerization on the surface of the CDs.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Physical
Aqiang Liu, Chenghao Bi, Xuanhui Qu, Jianjun Tian
Summary: The formation process of colloidal lead halide perovskite nanocrystals undergoes three stages, with the need for PbBr64- octahedrons to form first in order to react with Cs+ ions to create perovskite crystals.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Inorganic & Nuclear
Sudi Huang, Jingjing Zhong, Xinyi Huang, Yuqing Jia, Zhaoguo Hong, Fu-Ping Huang
Summary: An atomically precise Cu(I) macrocyclic complex Cu8I was developed for chemodynamic therapy research. The Cu-8 macrocyclic skeleton forms gradually with the selective recognition of iodide ions. The formation process of Cu8I was studied using time-dependent electrospray ionization mass spectrometry, and the Cu(I)-mediated Fenton-like reaction in Cu8I catalyzes the production of toxic •OH from H2O2, leading to efficient tumor suppression.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Analytical
Ming Han, Yi Wang, Gang Xiang, Yinyin Chen, Zhouping Yang, Yunchun Li, Yu Zhang, Changfang Lu, Xianxiang Wang
Summary: A nanocomposite-based dual-emission fluorescent probe was developed for detecting ethylene thioureas (ETU). The probe consisted of sulfur quantum dots (SQDs) and gluta-thione stabilized gold clusters (GSH-AuNCs). The fluorescence intensities at 450 nm and 570 nm decreased due to aggregation fluorescence quenching, but the addition of ETU resulted in a partial recovery of fluorescence at 570 nm. The method showed high selectivity and sensitivity, and had good recovery of ETU in agricultural products.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Organic
Shixian Cao, Pan Wang, Xi Zeng, Zhu Tao, Xin-Long Ni
Summary: The study utilized the cucurbituril host-guest chemistry to assist in the formation of carbon dots with tunable particle size and high fluorescence emission. By retaining the original rigid macrocyclic skeletons of the hosts during the fabrication process, the CDs obtained were characterized by high quality and unique properties, offering potential applications in biosensors and other fields.
ORGANIC CHEMISTRY FRONTIERS
(2021)
Article
Chemistry, Multidisciplinary
Kameel Antami, Fazel Bateni, Mahdi Ramezani, Cory E. Hauke, Felix N. Castellano, Milad Abolhasani
Summary: This study introduces the in-flow hot injection synthesis method for cesium lead iodide nanocrystals, providing a comprehensive understanding of the competing reaction parameters controlling the morphology and properties of the nanocrystals. It reveals a change in the CsPbI3 formation mechanism at temperatures above 150 degrees C and demonstrates the deficiencies of batch reactors in reproducible and scalable synthesis of CsPbI3 nanocrystals. The developed modular flow chemistry route opens up new possibilities for high-temperature studies of solution-processed nanocrystals and enables consistent and reliable continuous nanomanufacturing for next-generation energy technologies.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Emanuele Marino, Oleg A. Vasilyev, Bas B. Kluft, Milo J. B. Stroink, Svyatoslav Kondrat, Peter Schall
Summary: Nanocrystal assembly is crucial in developing next-generation optoelectronic devices. By utilizing critical Casimir attraction and electrostatic repulsion, the deposition process can be biased towards forming 2D layers or 3D islands, enabling control over the morphology of the deposited superstructure from crystalline to amorphous. This demonstrates the potential of critical Casimir interaction in directing the growth of future artificial solids based on nanocrystals.
NANOSCALE HORIZONS
(2021)
Article
Agriculture, Multidisciplinary
Hengye Chen, Liuna Wei, Xiaoming Guo, Chengying Hai, Lu Xu, Lei Zhang, Wei Lan, Chunsong Zhou, Yuanbin She, Haiyan Fu
Summary: A high-sensitivity paper-based fluorescent sensor was developed to detect l-theanine in tea water accurately. By combining chemometrics, this method proved to be efficient in analyzing the grade and quality of tea.
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2021)
Article
Physics, Applied
Ningning Zhang, Yuekai Hao, Youyuan Yao, Liang Gao, Tian Miao, Huiyong Hu, Liming Wang, Zhenyang Zhong
Summary: Based on the spatial matching of two components, we present unique emission characteristics of a Ge QD-nanodisk array system. The two-order-of-magnitude emission enhancement is derived from self-assembled QDs, which is related to the orientation of excitons in QDs coinciding with a vertical-polarized Mie mode. In addition, the emission efficiency is strongly dependent on the position of the QDs in nanodisks. Optimal spatial matching can be achieved when the orientation of the emitter matches with the polarized mode and the QD is located at the maximum of the field.
APPLIED PHYSICS LETTERS
(2023)
Article
Optics
Pengfei Li, Shanshan Xue, Lu Sun, Xupeng Zong, Li An, Dan Qu, Xiayan Wang, Zaicheng Sun
Summary: Carbon dots (CDs) as an advanced fluorescent carbon nanomaterial have great potential, but the complexity of their PL mechanism and structure-function relationship poses major challenges to their development and applications. This study synthesized red emissive CDs and found that their PL mechanism is similar to DHQP, providing insights for the further development of tunable CDs.
LIGHT-SCIENCE & APPLICATIONS
(2022)
Article
Chemistry, Physical
Li Liu, Keliang Pan, Ke Xu, Xitian Peng, Jin Z. Zhang
Summary: Mn2+-doped amino lead halide molecular clusters were synthesized using amine as passivating ligand and MnX2 as the Mn2+ doping source at room temperature. Their optical properties and formation mechanism were investigated, including the blue shift in electronic absorption caused by MnCl2 doping and the proposed model of substitution mechanism.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Green & Sustainable Science & Technology
Yanpeng Zhang, Junjie Qi, Mengying Li, Dong Gao, Chengfen Xing
Summary: Graphene quantum dots (GQDs) are used as a sensitive probe to detect formaldehyde in aqueous solutions through static quenching, showing good selectivity and sensitivity. They display a linear relationship between formaldehyde concentration and fluorescence intensity, with a detection limit of 0.0515 μg/mL. Additionally, GQDs have potential applications in food inspection for monitoring formaldehyde concentrations.
Article
Chemistry, Multidisciplinary
Jinming Zhu, Zhaopeng Cao, Yongcheng Zhu, Nelson Rowell, Yan Li, Shanling Wang, Chunchun Zhang, Gang Jiang, Meng Zhang, Jianrong Zeng, Kui Yu
Summary: This study provides a detailed description of the transformation pathway of CdSe nanospecies from one absorption doublet to another, as well as the role of precursor compounds in enabling this transformation. The research also sheds light on the structural nature and evolutionary behavior of these nanospecies with sharp doublets in optical absorption.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Theodore A. Gazis, Peter D. Matthews
Summary: Indium phosphide magic-sized clusters (MSCs) play a crucial role in the growth of InP quantum dots (QDs). This study identifies additional intermediate species and demonstrates particle growth at lower temperatures, providing further insights into the growth mechanism of InP.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Lauren M. Pellows, Mark A. Willis, Jesse L. Ruzicka, Bhanu P. Jagilinki, David W. Mulder, Zhi-Yong Yang, Lance C. Seefeldt, Paul W. King, Gordana Dukovic, John W. Peters
Summary: This study investigates the binding interactions between CdS quantum dots and MoFe protein using microscale thermophoresis. The results demonstrate that the interactions are mainly electrostatic and are sensitive to the diameter of the quantum dots, with smaller dots exhibiting stronger interactions.