In Pursuit of Low Energy Phosphorescence: Late Metal Coordination Complexes of the Planar, π-extended Bipyridyl Ligand 6,6',7,7'-Biphenanthridine.

Dion B Nemez, Robert J Ortiz, Keighlynn A Veilleux, J A Gareth Williams, David E Herbert

Abstract read

In one paragraph

Article in Chemistry (Weinheim an der Bergstrasse, Germany), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

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0cells of the map it votes in

1citing 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

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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

1 citing paper in PubMed.

Deep red photocatalysisChemical science · 2026
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

5 authors.

Dion B NemezDepartment of Chemistry and the Manitoba Institute for Materials, University of Manitoba, Winnipeg, Manitoba, R3T 2N2, Canada.ORCID https://orcid.org/0000-0003-0410-730X

Robert J OrtizDepartment of Chemistry and the Manitoba Institute for Materials, University of Manitoba, Winnipeg, Manitoba, R3T 2N2, Canada.ORCID https://orcid.org/0000-0001-9078-765X

Keighlynn A VeilleuxDepartment of Chemistry and the Manitoba Institute for Materials, University of Manitoba, Winnipeg, Manitoba, R3T 2N2, Canada.ORCID https://orcid.org/0009-0005-6430-557X

J A Gareth WilliamsDepartment of Chemistry, Durham University, Durham, DH1 3LE, UK.ORCID https://orcid.org/0000-0002-4688-3000

David E HerbertDepartment of Chemistry and the Manitoba Institute for Materials, University of Manitoba, Winnipeg, Manitoba, R3T 2N2, Canada.ORCID https://orcid.org/0000-0001-8190-2468

Funding

Natural Sciences and Engineering Research Council of Canada RGPIN-2022-04501

6 · The paper itself

Abstract

The coordination chemistry of the planar, doubly π-extended bipyridine analog, 6,6',7,7'-biphenanthridine (p-biphe), is presented. The phenanthridine units in p-biphe are fused together at the 6- and 7- positions, and the resulting rigid ligand is compared with the more flexible parent "biphe" fused only at the 6-positions. p-Biphe is intensely fluorescent in solution with a much higher quantum yield, but, unlike biphe, at 77 K the fluorescence is not accompanied by any significant phosphorescence. Two four-coordinate Cu(I) complexes and pseudo-octahedral Ru(II) and Ir(III) complexes are described: [Cu(p-biphe)

Identifiers

PMID40916856

DOI10.1002/chem.202501802

PMCPMC12619056

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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.