Enhanced intersystem crossing in carbonylpyrenes

Literature Information

Publication Date 2017-10-03
DOI 10.1039/C7CP04834C
Impact Factor 3.676
Authors

Shinaj K. Rajagopal, Ajith R. Mallia, Mahesh Hariharan


View Original

Abstract

Ultrafast intersystem crossing of carbonylpyrenes in chloroform was investigated by femtosecond pump–probe spectroscopy. When compared to the dominant fluorescence decay pathway in pyrene, carbonyl functionalized pyrenes display near-unity triplet formation upon photoexcitation. The excited singlet state (Sp) undergoes rapid intersystem crossing (kISC) concomitantly with internal conversion (kIC) to lower excited singlet states (Sn) within a timescale of 5–11 ps (1/τ2 = kIC + kISC). Furthermore, intersystem crossing from lower excited singlet states (Sn) proceeds through coupling with receiver triplet states, eventually leading to high triplet quantum yields (ΦT = 97%; tetraacetylpyrene). Followed by internal conversion in the triplet manifolds, phosphorescence decay on a microsecond timescale is observed from the emitter triplet state.

Related Literature

Practical phosphorylation of polymers: an easy access to fully alcohol soluble synthetically and industrially important polymers

Gokhan Sagdic, Ozgun Daglar, Ufuk Saim Gunay, Emrah Cakmakci, Gurkan Hizal, Umit Tunca, Hakan Durmaz

2021-07-05 Paper

DOI: 10.1039/D1PY00726B

Front cover

2021-04-13 Cover

DOI: 10.1039/D1PY90051J

Amphiphilic poly(ether urethanes) carrying associative terpyridine side groups with controlled spacing

Katharina Breul, Sebastian Seiffert

2021-03-23 Paper

DOI: 10.1039/D1PY00121C

Mediating covalent crosslinking of single-chain nanoparticles through solvophobicity in organic solvents

Georg M. Scheutz, Justine Elgoyhen, Kyle C. Bentz, Hao Sun, Junpeng Zhao, Daniel A. Savin, Brent S. Sumerlin

2021-07-27 Communication

DOI: 10.1039/D1PY00780G

Introducing a 1,1-diphenylethylene analogue for vinylpyridine: anionic copolymerisation of 3-(1-phenylvinyl)pyridine (m-PyPE)

Marcel Fickenscher, Tom Reimers, Holger Frey

2021-05-31 Paper

DOI: 10.1039/D1PY00302J

Synthesis of fully degradable cationic polymers with various topological structures via postpolymerization modification by using thio-bromo “click” reaction

Yunkai Dai, Zhitao Hu, Xiaoying Wang, Xingliang Liu, Yuanchao Li, Yi Shi, Yongming Chen

2021-04-05 Paper

DOI: 10.1039/D1PY00106J

Droplet nucleation in miniemulsion thiol–ene step photopolymerization

Marc Schmutz

2021-03-08 Paper

DOI: 10.1039/D1PY00139F

Synthesis and characterization of a pH-responsive mesalazine-polynorbornene supramolecular assembly

Vajk Farkas, Gábor Turczel, János Deme, László Trif, Anvar Mirzaei, Dang Vu Hai, Sándor Kéki, Péter Huszthy, Róbert Tuba

2021-03-05 Paper

DOI: 10.1039/D1PY00194A

NMR investigations of polytrifluoroethylene (PTrFE) synthesized by RAFT

Vincent Bouad, Marc Guerre, Sami Zeliouche, Bruno Améduri, Cédric Totée, Gilles Silly, Rinaldo Poli, Vincent Ladmiral

2021-03-15 Paper

DOI: 10.1039/D0PY01753A

You might also like

Compound Q&A

How should waste containing 2-Ethyl-4-Methyl-1H-Imidazole-5-Carbaldehyde (CAS: 88634-80-4) be handled?

Waste containing 2-Ethyl-4-Methyl-1H-Imidazole-5-Carbaldehyde (CAS: 88634-80-4) ...

88634-80-42-Ethyl-4-Methyl-1H-...
Compound Q&A

What industries use Triethoxy(octyl)silane (CAS: 1385031-14-0)?

Triethoxy(octyl)silane (CAS: 1385031-14-0) is widely used in the pharmaceuticals...

1385031-14-0Triethoxy(octyl)sila...
Compound Q&A

Are there alternatives to 3-iodo-7-nitro-1H-indazole (CAS: 864724-64-1) in synthesis?

Several alternatives to 3-iodo-7-nitro-1H-indazole (CAS: 864724-64-1) exist in t...

864724-64-13-iodo-7-nitro-1H-in...
Compound Q&A

Are there alternatives to Benzene, bis[(trimethoxysilyl)ethyl] (CAS: 266317-71-9) in synthesis?

Yes, there are alternatives to Benzene, bis[(trimethoxysilyl)ethyl] (CAS: 266317...

266317-71-9Benzene, bis[(trimet...
Compound Q&A

Is Isothiazole-3-carbonitrile (CAS: 1452-17-1) safe?

Isothiazole-3-carbonitrile (CAS: 1452-17-1) is generally considered safe when us...

1452-17-1Isothiazole-3-carbon...
Compound Q&A

Is (3-Chlorophenyl)methanol (CAS: 873-63-2) safe?

(3-Chlorophenyl)methanol (CAS: 873-63-2) is considered low to moderately toxic. ...

873-63-2(3-Chlorophenyl)meth...
Compound Q&A

How is (2S,3S)-2-Hydroxy-3-({[(2-methyl-2-propanyl)oxy]carbonyl}amino)-3-(2-naphthyl)propanoic acid (CAS: 959583-98-3) typically synthesized?

(2S,3S)-2-Hydroxy-3-({[(2-methyl-2-propanyl)oxy]carbonyl}amino)-3-(2-naphthyl)pr...

959583-98-3(2S,3S)-2-Hydroxy-3-...
Compound Q&A

What precautions should be taken when handling Methyl 2-(bromomethyl)-5-methoxybenzoate (CAS: 788081-99-2)?

Proper handling of methyl 2-(bromomethyl)-5-methoxybenzoate requires the use of ...

788081-99-2Methyl 2-(bromomethy...
Compound Q&A

What is 6,8-Dibromoimidazo[1,2-a]pyridine-2-carboxylic acid (CAS: 904805-36-3)?

6,8-Dibromoimidazo[1,2-a]pyridine-2-carboxylic acid (CAS: 904805-36-3) is an aro...

904805-36-36,8-Dibromoimidazo[1...
Compound Q&A

Is 3-Amino-5-bromo-2-pyridinecarbonitrile (CAS: 573675-27-1) safe?

3-Amino-5-bromo-2-pyridinecarbonitrile is considered safe when handled under pro...

573675-27-13-Amino-5-bromo-2-py...

Source Journal

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

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.

Recommended Compounds

Recommended Suppliers

Disclaimer
This page provides academic journal information for reference and research purposes only. We are not affiliated with any journal publishers and do not handle publication submissions. For publication-related inquiries, please contact the respective journal publishers directly.
If you notice any inaccuracies in the information displayed, please contact us at support@chemtradehub.com. We will promptly review and address your concerns.