#Porphyrins
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birdingtothemax.bsky.social
Owl feathers contain porphyrins, which fluoresce pink under ultraviolet light. Recently grown feathers fluoresce, while older feathers don’t, as porphyrins fade with age. First-year (1 flight feather generation) and second-year (2 generations) Northern Saw-whet Owls are pictured. 🇨🇦🧪🌎 #birdringing
1CY Northern Saw-whet Owl. Metchosin, British Columbia, Canada. 17 November 2025. 2CY Northern Saw-whet Owl. Metchosin, British Columbia, Canada. 17 November 2025.
November 24, 2025 at 6:41 AM
mathiassenge.bsky.social
new preprint out in @chemrxiv.org on how fixate #porphyrin #atropisomers via metal coordination chemrxiv.org/engage/chemr...
work at @ias-tum.bsky.social @tcddublin.bsky.social and supported by @tum.de @researchireland.ie stay tuned 😉
Porphyrin atropisomerism is an outstanding tool for the accessibility of shape specific molecules, yet over twenty years after the unusual rotational barriers of nonplanar porphyrins was observed, a quantitative relationship remains at large. There is a growing need to control this phenomenon in nonplanar porphyrin systems due to the mounting interest in these systems as enzyme-mimics and organocatalysts. Hence, in this work the influence of steric bulk on the stability of nonplanar 5,10,15,20-tetraaryl-2,3,7,8,12,13,17,18-octaethyl-porphyrin atropisomers was explored. The library of atropisomeric porphyrins synthesized herein emphasizes the delicate balance that must be achieved between steric bulk without inducing an undesired amount of macrocycle flexibility to obtain an atropisomer with a predictable rotational barrier. To overcome this challenge, a stabilization strategy was devised by exploiting metal coordination to the peripheral porphyrin functionalities, leading to an atroposelective superstructure formation.
November 20, 2025 at 6:21 PM
helixbrief.bsky.social
This comprehensive study employs advanced multiconfigurational methods to investigate the electronic excited states of two molecular qubit candidates: vanadyl and copper tetraphenyl porphyrins.
November 14, 2025 at 12:10 AM
helixbrief.bsky.social
Unraveling the quantum secrets of molecular qubits! Groundbreaking research reveals the complex interplay of electronic excited states in vanadyl and copper porphyrins, paving the way for...

🧵 Thread below

Full analysis: https://helixbrief.com/article/9dc77cdc-a137-44b4-b787-970c0be8a123
November 14, 2025 at 12:10 AM
alexandrepiquet.bsky.social
we propose the porphyrins could originate from commensal bacteria."

link.springer.com/article/10.1...

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particularly for an animal likely not to be able to detect red light, we surmise that the fluorescence is incidental and of no direct importance to the hedgehog. Supplementary Information The online version contains supplemen- tary material available at https://doi.org/10.1007/s10886-021-01279-6 Conclusion This study confirms that the red fluorescence of hedgehog spines results from a mixture of the free-base porphyrins coproporphyrin III, uroporphyrin III, and protoporphyrin IX. We thus provide molecular resolution to the phenomenon of hedgehog spine fluorescence. We also offer circumstantial evidence for a commensal bacteria-based origin theory of the fluorescence that possibly can also be extended to the red fluorescence in keratinaceous tissues of other terrestrial ani- mals. Furthermore, since it is difficult to envision a behav- ioral signaling role of any red fluorescence for a nocturnal animal as it requires UV-visible light to be induced, and
November 8, 2025 at 11:38 AM
natbiotech.nature.com
Porphyrins are produced at scale through metabolic engineering and optimization of CPIII purification go.nature.com/3Ks4YCi
rdcu.be/eNakD
High-yield porphyrin production through metabolic engineering and biocatalysis - Nature Biotechnology
Porphyrins are produced at scale through metabolic engineering and optimization of CPIII purification.
go.nature.com
November 1, 2025 at 1:10 AM
birdsconnectsea.bsky.social
Happy Halloween! Here's a fun fact about owls for spooky season. Owls fluoresce pink under UV light. This is due to pigments called porphyrins, and helps researchers age owls. There are more pigments on new feathers, so younger owls glow more uniformly bright pink.
October 31, 2025 at 3:22 PM
kkmurray.bsky.social
(Talanta) Paper plate-assisted two-step - fractionation and speciation - for the evaluation of nickel and vanadium porphyrins via laser ablation inductively coupled plasma mass spectrometry: Publication date: 1 February 2026

Source: Talanta, Volume 298, Part B

Author(s):… #Talanta #MassSpecRSS
Paper plate-assisted two-step - fractionation and speciation - for the evaluation of nickel and vanadium porphyrins via laser ablation inductively coupled plasma mass spectrometry
Publication date: 1 February 2026 Source: Talanta, Volume 298, Part B Author(s): Eduarda Q. Machado, Bárbara B.E. Salles, Leandro W. Hantao, Cleverson J.F. de Oliveira, Marco A.Z. Arruda
dlvr.it
October 20, 2025 at 11:02 PM
helixbrief.bsky.social
Laser-writing porphyrins onto complex surfaces unlocks precise, multi-functional materials. Operando monitoring optimizes grafting, preserving photophysics for customized, layered designs.

🧵 Thread below

Full analysis: https://helixbrief.com/article/2597c8cd-c343-419f-b24a-9185e095eb22
October 16, 2025 at 4:48 PM
bigearthdata.bsky.social
Model thiophene-decorated nickel porphyrins for tandem CO
->Nature | More from Lil' Dr Glen at BigEarthData.ai
Model thiophene-decorated nickel porphyrins for tandem CO
Dresselhaus, M. S. & Thomas, I. L. Alternative energy technologies. Nature 414, 332–337 (2001). Chu, S. & Majumdar, A. Opportunities and challenges for a sustainable energy future. Nature 488, 294–303 (2012). Seh, Z. W. et al. Combining theory and experiment...
www.nature.com
October 9, 2025 at 3:38 PM
natsynth.nature.com
Now online:

Article by Aoni Xu, Sung-Fu Hung & co-workers

Model thiophene-decorated nickel porphyrins for tandem CO2 reduction

www.nature.com/articles/s44... ($)
#Chemsky
Model thiophene-decorated nickel porphyrins for tandem CO2 reduction - Nature Synthesis
Model thiophene-decorated nickel porphyrins are synthesized to examine how sulfur promotes CO2-to-CO conversion and tandem CO2-to-C2 product conversion in electrocatalytic CO2 reduction. Combined theoretical and experimental analyses show that thiophene substituents generate a ligand hole character that modulates the nickel-centred electronic structure, enhancing overall catalytic performance.
www.nature.com
October 9, 2025 at 12:16 PM
physicschemph-bot.bsky.social
auner, et al.: Decoding Shake-up Satellites in XPS through Large-Scale ab initio Simulations: Spectral Signatures of Ring Fusion in Porphyrins https://arxiv.org/abs/2509.26057 https://arxiv.org/pdf/2509.26057 https://arxiv.org/html/2509.26057
October 1, 2025 at 6:47 AM
mofpapers.bsky.social
Synthesis, Oxygen-Sensing Properties, and Photodegradation of PCN-224-Type Metal–Organic Frameworks Based on Partly Fluorinated Tetrakis(4-carboxyphenyl)porphyrins http://dx.doi.org/10.1021/acsaom.5c00257
September 24, 2025 at 1:21 PM
helixbrief.bsky.social
These findings expand the understanding of phosphorus(V)-porphyrins and their potential applications in various fields, such as functional dyes and materials.
September 23, 2025 at 5:46 PM
mathiassenge.bsky.social
This Friday is #EuropeanResearchersNight ⚗️🧪Come visit us and other research groups @TCD_Chemistry
in @tcdTBSI @TCD_Chemistry @tcddublin.bsky.social . Everyone is welcome 📢! Great science and fun people 👨‍🔬👩‍🔬😀#porphyrins #chlorophyll #cubane #BODIPY #PDT #bicyclopentane @researchireland.ie
September 23, 2025 at 3:15 PM
mindlabpt.bsky.social
Bioinspiring Copper: Recent Research by @MINDlabpt.bsky.social
Embedding Copper Centers into Corroles and Porphyrins for Mild Catalytic Functionalization of Hydrocarbons.
Molecular Catalysis, 2025, 587, 115470.
doi.org/10.1016/j.mc...
#scicomm #chemistry #chemsky #catalysis
September 21, 2025 at 11:27 PM
gltch.io
✨Scientists built a colossal molecule—an 8nm ring of 18 porphyrins!🤯 It's the largest *ever* to glow with full, ring-wide aromaticity! ⚛️ #chemistry

Source: https://phys.org/news/2025-09-member-nanoring-boundaries-global-aromaticity.html
18-member nanoring pushes the boundaries of global aromaticity
Pushing the limits of size constraints in chemistry, an 8-nanometer 18-porphyrin nanoring (c-P18) becomes the largest known cyclic molecule to exhibit detectable global aromaticity. This phenomenon, where π-electrons are delocalized not just over individual aromatic units but around the entire macrocyclic ring, is mostly seen in smaller aromatic molecules but rarely found in macrocyclic entities.
phys.org
September 21, 2025 at 3:34 PM
biorxiv-pathology.bsky.social
TSPO deficiency reveals a novel role for porphyrins in regulating white adipose tissue lipid metabolism https://www.biorxiv.org/content/10.1101/2025.09.14.676078v1
September 17, 2025 at 9:01 PM
biorxivpreprint.bsky.social
TSPO deficiency reveals a novel role for porphyrins in regulating white adipose tissue lipid metabolism https://www.biorxiv.org/content/10.1101/2025.09.14.676078v1
September 17, 2025 at 9:01 PM
purescience.news
Porphyrin ring pushes the size limit for fully aromatic molecules #Science #Chemistry #OrganicChemistry #Porphyrins #AromaticCompounds
Porphyrin ring pushes the size limit for fully aromatic molecules
Nanoring structure features 18 porphyrin units linked together by butadiyne units
purescience.news
September 17, 2025 at 6:45 PM
glacierpique.bsky.social
Plant matter concentrates V in anoxic sediments, and V porphyrins are shaped like chlorophyll, but Mannardite itself is inorganic. Nature is perfect chemical refinery. I don’t know about neutrality. Crude oil, shale, and V are so integral to each other, they seem hard to separate.
September 17, 2025 at 4:40 AM
newjchem.rsc.org
🧪The outside front cover of this week's issue features an Open Access article by Jonathan S. Lindsey & co. entitled Synthesis of compact water-soluble bioconjugatable porphyrins for life sciences applications - read it here: doi.org/10.1039/D5NJ...
The front cover of NJC Volume 49, Number 36. The featured article is entitled Synthesis of compact water-soluble bioconjugatable porphyrins for life sciences applications, by Jonathan S. Lindsey and coworkers. The cover art shows a river flowing through a forest, overlaid with the molecular structure of a bioconjugated porphyrin.
September 16, 2025 at 1:43 PM
glacierpique.bsky.social
It’s the porphyrin chemistry. Plant porphyrins have a role concentrating the V, but #Mannardite is an inorganic mineral. Iron porphyrins are hemoglobin. Mg = chlorophyll. Ni =Abelsonite. Porphs have diverse optical properties and biochem functions.

pmc.ncbi.nlm.nih.gov/articles/PMC...
Chemistry of porphyrins in fossil plants and animals
Porphyrins are macrocyclic tetrapyrrole derivatives that are widely distributed in nature. They are often complexed with a metal ion located in the center of the ring system and may be modified by var...
pmc.ncbi.nlm.nih.gov
September 16, 2025 at 1:28 PM
glacierpique.bsky.social
I was pretty excited - not gonna lie - to learn about V porphyrins and relationships between V and crude oil, especially how V porphyrins are incorporated into keragens abiotically. What?!? But what did the mineralization process look like during pre-Cambrian times, before we had organic matter?
September 16, 2025 at 4:19 AM
glacierpique.bsky.social
Why is V so concentrated in crude oil and oil shales?

Anoxic waters, H2S reduction, formation of porphyrin complexes, precipitation, clay adsorption, shale deposition, mineralization.

Tiny, V-rich #Mannardite punches above its weight.
#MinCup25
#Porphyrins
Prism of black Mannardite contrast with white matrix. Image from mindat’s website, copyright Alessio Becucci Silver prism of Mannardite contrasts with white matrix. Image from mindat’s website, copyright Chinellato Matteo
September 16, 2025 at 1:55 AM