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
A supramolecular red to near-infrared fluorescent probe for the detection of drugs in urine
Gyan H. Aryal, Kenneth W. Hunter, Liming Huang
DOI: 10.1039/C8OB02180E
Molecular engineering of logic gate types by module rearrangement in ‘Pourbaix Sensors’: the effect of excited-state electric fields
Jake C. Spiteri, Sergey A. Denisov, Gediminas Jonusauskas, Sylwia Klejna, Konrad Szaciłowski, Nathan D. McClenaghan, David C. Magri
DOI: 10.1039/C8OB00485D
Chiral β3-isocyanopropionates for multicomponent synthesis of peptides and depsipeptides containing a β-amino acid fragment
Danil P. Zarezin, Olga I. Shmatova, Valentine G. Nenajdenko
DOI: 10.1039/C8OB01507D
Campestarenes: new building blocks with 5-fold symmetry
Seong Nam, David C. Ware
DOI: 10.1039/C8OB00957K
Synthesis of 2-aminobenzophenones through acylation of anilines with α-oxocarboxylic acids assisted by tert-butyl nitrite
Xinying Zhang, Xuesen Fan
DOI: 10.1039/C8OB01846D
Recent developments and applications of cyanamides in electrophilic cyanation
Manthena Chaitanya, Pazhamalai Anbarasan
DOI: 10.1039/C8OB01770K
A DFT/PCM-based methodology for predicting solvolytic reactivities of organic carbonates
Mirela Matić, Bernard Denegri
DOI: 10.1039/C8OB00917A
I2-Triggered N–O cleavage of ketoxime acetates for the synthesis of 3-(4-pyridyl)indoles
Qinghe Gao, Yakun Wang, Qianqian Wang, Yanping Zhu, Zhaomin Liu, Jixia Zhang
DOI: 10.1039/C8OB02230E
Novel binaphthyl and biphenyl α- and β-amino acids and esters: organocatalysis of asymmetric Diels–Alder reactions. A combined synthetic and computational study
Philip C. Bulman Page, Francesca S. Kinsey, Yohan Chan, Ian R. Strutt, Alexandra M. Z. Slawin, Garth A. Jones
DOI: 10.1039/C8OB01795F
Umpolung cyclization reaction of N-cinnamoylthioureas in the presence of DBU
Rei Saito, Naohiro Uemura, Hiroki Ishikawa, Akina Magara, Yoshio Kasashima
DOI: 10.1039/C8OB02066C
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.












![Pyrazolo[1,5-a]pyridine-3-carbothioamide structure Pyrazolo[1,5-a]pyridine-3-carbothioamide structure](https://static.chemtradehub.com/structs/885/885275-44-5-aae0.webp)

