Time-resolved spectroscopy of the ensembled photoluminescence of nitrogen- and boron/nitrogen-doped carbon dots
Literature Information
Sunghu Kim, Byung-Kuk Yoo, Yuri Choi, Oh-Hoon Kwon
Carbon dots (CDs) have potential applications in various fields such as energy, catalysis, and bioimaging due to their strong and tuneable photoluminescence (PL), low toxicity, and robust chemical inertness. Although several PL mechanisms have been proposed, the origin of PL in CDs is still in debate because of the ensembled nature of the heterogeneous luminophores present in the CDs. To unravel the origin of PL in CDs, we performed time-resolved spectroscopy on two types of CDs: nitrogen-doped (N-CD) and boron–nitrogen co-doped (BN-CD). The PL decays were fitted by stretched exponential functions to estimate the distribution of the decay kinetics in the CDs, which have different PL lifetime distributions. Both CDs displayed main, blue emission decaying in 15 ns, which originates from the dominant molecular state. The analysis of the non-exponential PL decay using stretched exponential fits revealed that the functional surface luminophores are of less variety but of more environmental heterogeneity and have much lower populations in BN-CD than in N-CD.
Related Literature
First-principles study on thermodynamic stability of the hybrid interfacial structure of LiMn2O4 cathode and carbonate electrolyte in Li-ion batteries
Daehyeon Choi, Joonhee Kang, Jinwoo Park, Byungchan Han
DOI: 10.1039/C7CP08037A
Size-dependent magnetic and inductive heating properties of Fe3O4 nanoparticles: scaling laws across the superparamagnetic size
Jeotikanta Mohapatra, Fanhao Zeng, Kevin Elkins, Meiying Xing, Madhav Ghimire, Sunghyun Yoon, Sanjay R. Mishra, J. Ping Liu
DOI: 10.1039/C7CP08631H
On the regioselectivity of the Diels–Alder cycloaddition to C60 in high spin states
Ouissam El Bakouri, Rosa M. Girón, Salvatore Filippone, Miquel Solà
DOI: 10.1039/C7CP07965F
Collisional excitation of interstellar PO(X2Π) by He: new ab initio potential energy surfaces and scattering calculations
François Lique, Izaskun Jiménez-Serra, Serena Viti, Sarantos Marinakis
DOI: 10.1039/C7CP05605B
Li deposition and desolvation with electron transfer at a silicon/propylene-carbonate interface: transition-state and free-energy profiles by large-scale first-principles molecular dynamics
Tsukuru Ohwaki, Taisuke Ozaki, Yukihiro Okuno, Hideto Imai, Minoru Otani
DOI: 10.1039/C7CP08569A
Phase transition dynamics of single optically trapped aqueous potassium carbonate particles
Kıvanç Esat, Grégory David, Theodoros Poulkas, Mikhail Shein, Ruth Signorell
DOI: 10.1039/C8CP00599K
Fine-structure transitions of interstellar atomic sulfur and silicon induced by collisions with helium
J. Kłos, S. D. Le Picard
DOI: 10.1039/C7CP05092E
Low temperature kinetics and theoretical studies of the reaction CN + CH3NH2: a potential source of cyanamide and methyl cyanamide in the interstellar medium
Chantal Sleiman, Gisèle El Dib, Marzio Rosi, Dimitrios Skouteris, Nadia Balucani, André Canosa
DOI: 10.1039/C7CP05746F
You might also like
What are the main uses of 1-(3-Aminophenyl)-3-[(3R)-1-(3,3-dimethyl-2-oxobutyl)-2-oxo-5-(2-pyridinyl)-2,3-dihydro-1H-1,4-benzodiazepin-3-yl]urea (CAS: 155412-88-7)?
This compound is mainly used as an intermediate in the synthesis of antipsychoti...
How should waste containing 1-(D-Ribofuranosyl)-1,4-dihydro-3-pyridinecarboxamide (CAS: 19132-12-8) be handled?
Waste containing 1-(D-Ribofuranosyl)-1,4-dihydro-3-pyridinecarboxamide (CAS: 191...
What regulatory guidelines apply to 2-Methyl-2-propanyl 3-bromo-3-(hydroxymethyl)-1-azetidinecarboxylate (CAS: 2007919-81-3)?
2-Methyl-2-propanyl 3-bromo-3-(hydroxymethyl)-1-azetidinecarboxylate (CAS: 20079...
What is N-(4-Chloro-2-pyridinyl)acetamide (CAS: 245056-66-0)?
N-(4-Chloro-2-pyridinyl)acetamide (CAS: 245056-66-0) is a chemical compound with...
What is 5-Chloro-2-hydroxybenzoic acid (CAS: 321-14-2)?
5-Chloro-2-hydroxybenzoic acid, also known as 5-chlorosalicylic acid, is an arom...
What precautions should be taken when handling 1,1-Dichloro-1-fluoroethane (CAS: 1717-00-6)?
When handling 1,1-Dichloro-1-fluoroethane (CAS: 1717-00-6), it is important to u...
What are the physical and chemical properties of Fmoc-(2S,3R)-3-phenylpyrrolidine-2-carboxylic acid (CAS: 281655-32-1)?
Fmoc-(2S,3R)-3-phenylpyrrolidine-2-carboxylic acid is a white crystalline solid ...
What are the main uses of 4-Amino-5-bromo-2-pyridinecarboxylic acid (CAS: 1363381-01-4)?
4-Amino-5-bromo-2-pyridinecarboxylic acid is primarily used as a precursor in th...
What precautions should be taken when handling (S)-tert-butyl 2-((2-(4-bromophenyl)-2-oxoethyl)carbamoyl)pyrrolidine-1-carboxylate (CAS: 1007881-98-2)?
Handling this compound should be done with personal protective equipment (PPE) i...
What precautions should be taken when handling 8-bromo-2,2-dimethyl-3,4-dihydro-2H-1,4-benzoxazin-3-one (CAS: 688363-73-7)?
When handling 8-bromo-2,2-dimethyl-3,4-dihydro-2H-1,4-benzoxazin-3-one, use prop...
Source Journal
Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.













![tert-Butyl N-[(2-chloropyridin-4-yl)methyl]carbamate structure tert-Butyl N-[(2-chloropyridin-4-yl)methyl]carbamate structure](https://static.chemtradehub.com/structs/916/916210-27-0-9f95.webp)
![4-Chloro-3-(trifluoromethyl)-1H-pyrrolo[2,3-b]pyridine structure 4-Chloro-3-(trifluoromethyl)-1H-pyrrolo[2,3-b]pyridine structure](https://static.chemtradehub.com/structs/869/869335-75-1-a9d0.webp)