Evidence map›Paper›PMID 30951313›Full record

ArticleThe journal of physical chemistry letters2019

Aromaticity and Antiaromaticity in the Excited States of Porphyrin Nanorings.

Martin D Peeks, Juliane Q Gong, Kirstie McLoughlin, Takayuki Kobatake, Renée Haver, Laura M Herz, Harry L Anderson

Abstract read
In one paragraph

Article in The journal of physical chemistry letters, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

12 citing papers in PubMed.

  1. Article
  2. Current-Density Calculations on Zn-PorphyrinThe journal of physical chemistry. A · 2023
    Article
  3. Aromaticity: Quo Vadis.Chemical science · 2023
    Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. How Aromatic Are Molecular Nanorings? The Case of a Six-Porphyrin Nanoring*.Angewandte Chemie (International ed. in English) · 2021
    Article
  9. Article
  10. Article
  11. Ring currents modulate optoelectronic properties of aromatic chromophores at 25 T.Proceedings of the National Academy of Sciences of the United States of America · 2020
    Article
  12. Global Aromaticity and Antiaromaticity in Porphyrin Nanoring Anions.Angewandte Chemie (International ed. in English) · 2019
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Martin D PeeksDepartment of Chemistry, Chemistry Research Laboratory , University of Oxford , Oxford OX1 3TA , United Kingdom.ORCID http://orcid.org/0000-0002-9057-9444
Juliane Q GongDepartment of Physics, Clarendon Laboratory , University of Oxford , Parks Road , Oxford OX1 3PU , United Kingdom.
Kirstie McLoughlinDepartment of Zoology , University of Oxford , Oxford OX1 3SZ , United Kingdom.
Takayuki KobatakeDepartment of Chemistry, Chemistry Research Laboratory , University of Oxford , Oxford OX1 3TA , United Kingdom.
Renée HaverDepartment of Chemistry, Chemistry Research Laboratory , University of Oxford , Oxford OX1 3TA , United Kingdom.
Laura M HerzDepartment of Physics, Clarendon Laboratory , University of Oxford , Parks Road , Oxford OX1 3PU , United Kingdom.ORCID http://orcid.org/0000-0001-9621-334X
Harry L AndersonDepartment of Chemistry, Chemistry Research Laboratory , University of Oxford , Oxford OX1 3TA , United Kingdom.ORCID http://orcid.org/0000-0002-1801-8132

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Aromaticity can be a useful concept for predicting the behavior of excited states. Here we show that π-conjugated porphyrin nanorings exhibit size-dependent excited-state global aromaticity and antiaromaticity for rings containing up to eight porphyrin subunits, although they have no significant global aromaticity in their neutral singlet ground states. Applying Baird's rule, even rings ([4 n] π-electrons) are aromatic in their lowest excited states, whereas the lowest excited states of odd rings ([4 n + 2] π-electrons) are antiaromatic. These predictions are borne out by density functional theory (DFT) studies of the nucleus-independent chemical shift (NICS) in the T

Identifiers

PMID30951313
PMCPMC6488184

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.