#PiSky

3 weeks ago

Welcome in Zurich Arturo! 🫶🏼 Coming from warm Madrid from the group of Nazario Martín, he decided to do a three month internship with us, learning about radicals ✨ Happy you are with us! 🤗 #chemsky #pisky @michaljuricek.bsky.social

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1 month ago

#PiSky L-region APEX

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Dual‐State Photophysical Modulation via Bifurcated Hydrogen Bonding in a U‐Shaped Dipyridophenazine‐Cored Donor‐π‐Acceptor‐π‐Donor Fluorophore A donor–π–acceptor–π–donor (D–π–A–π–D) fluorophore bearing a U-shaped dipyridophenazine core forms bifurcated hydrogen bonds with neutral donors such as sulfonamides or water. This interaction modula...

2 months ago

Spent the evening yesterday celebrating Pauline's latest publication. A job well done - congrats!! 🤩🥳♥️ #chemsky #pisky @michaljuricek.bsky.social @chem.uzh.ch

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Josh Walsh

@joshuawalsh.bsky.social

2 months ago

We are hiring, two fully funded MSc/PhD positions available.
Please share! #Chemsky #Pisky

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Youhei Takeda

@takephos.bsky.social

2 months ago

Final 2025 paper in Chem Eur J! Bifurcated H-bonding enables dual-state photophysics in a U-shaped DPPZ fluorophore. International collaboration🇯🇵🇩🇰 with Piotr_deSilva and Yoichi Kobayashi. Congratulations the team! #JST #ASPIRE #OpenAccess #PiSky
doi.org/10.1002/chem...

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Michal Juríček

@michaljuricek.bsky.social

2 months ago

Enjoying the #Pacifichem2025 chemistry congress in Honolulu with @tomsolomek.bsky.social 🌊🌋🌺

@juriceklab.bsky.social #hawaii #pisky #chemsky

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How to juice your Google Scholar h-index, preprint by preprint A screenshot of Yousaf’s Google Scholar profile before it was removed. Muhammad Zain Yousaf, a postdoc at Zhejiang University in Hangzhou, China, became a scholar of note overnight. Or so it …

3 months ago

How to juice your Google Scholar h-index...

...just an increase case of what thousands of researchers out there are doing day by day, eroding #researchintegrity

...also in #chemsky, #compchemsky #pisky

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Highly soluble cyclic dibenzophenazine heterodimer enabled by a tetra-functionalized building block Abstract. A cyclic heterodimer of dibenzo[a,j]phenazine (DBPHZ) has been synthesized using a novel tetra-functionalized DBPHZ building block bearing bulky

3 months ago

Ending the week on a luminous note 👀✨ #fluorescentfriday #chemsky #pisky @michaljuricek.bsky.social

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Youhei Takeda

@takephos.bsky.social

3 months ago

Published! A soluble cyclic U-shaped dibenzophenazine dimer was developed and showed excimer-like emission in thin films. Proud to share our new joint work with
@mketherington.bsky.social in Chem. Lett. Congratulations to the team! doi.org/10.1093/chem...
#JST #ASPIRE #OpenAccess #PiSky

3 1 0 0

SEC digital calendar Scottish Episcopal Church digital calendar and lectionary in a digital format for importing into Google Calendar, Microsoft Outlook, etc

3 months ago

Congratulations Tara on your successful Bachelor's defence on Friday. Even though you've only been here for couple of weeks, you became part of the group so quickly. We will miss you and all the best for your future 💕✨ #chemistry #student #graduation #pisky #chemsky @michaljuricek.bsky.social

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Gareth J M Saunders

@garethjms.bsky.social

3 months ago

For the last 22 years I've created a digital version of the Scottish Episcopal Church calendar and lectionary.

The 2025-2026 version went live today. #pisky

www.seccalendar.org.uk

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Exclusive: ‘Highly problematic’ policy has Saudi university pressuring faculty to cite its research Prince Sultan University At Prince Sultan University in Saudi Arabia, faculty members must help raise their school’s academic standing not by doing impactful work, but by citing the institution’s r…

3 months ago

Manipulation of University Rankings = Destroys Confidence in Science
STOP Counting Numbers 🚫 #researchintegrity

[also concerns #chemsky #compchemsky #pisky]

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3 months ago

What brings chemists JOY? When molecules GLOW! ✨

UV in, visible out. Turn off the light, and enjoy the ambience!

@chem.uzh.ch #chemsky #pisky

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3 months ago

2nd Internat. Symposium on Emerging Photovoltaic Materials, Tsinghua SIGS, organized by Safakath Karuthedath

Thank you, Safakath, for the kind invitation to the 2 seminars, i.e. on our research #chemsky #PiSky , and on #researchintegrity

A great week with tutorials & discussions!

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3 months ago

Chiral Nanohoops as an Efficient Spin Polarization System #PiSky

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4 months ago

🙂 With Zengqi Xie at SCUT: research talks, tuturial & discussions on #chemsky #pisky

...and seminar & course on #researchintegrity

Thanks again, Zengqi & group, for 3 packed, great days!

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Creating and Manipulating π-Extended Quintulene on Surfaces - ChemistryViews A curved nitrogen-doped nanocarbon synthesized that can flip shape and trap a gold atom at its center

4 months ago

www.chemistryviews.org/creating-and... #PiSky

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Aggregation‐Induced Energy Transfer Within a Donor–Acceptor–Donor Compound Featuring Hydrophobic Mesogenic Self‐Assembling Units Hydrophobic mesogenic self-assembling units induce the aggregation of a structurally distinct dibenzophenazine-cored electronic donor–acceptor–donor organic emitter in aqueous environments. This aggr...

4 months ago

On-Surface Synthesis of a Nitrogen-Doped Curved Cycloarene: π-Extended Pentaazaquintulene and Its Gold Complex | Journal of the American Chemical Society pubs.acs.org/doi/10.1021/... #PiSky

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Youhei Takeda

@takephos.bsky.social

4 months ago

Our latest paper is out in Chemistry – An Asian Journal! Water-based aggregation triggers energy transfer—like watching an aurora in your test tube 🌌 Huge thanks to Go Watanabe & Tsuneaki Sakurai! #JST #ASPIRE #OpenAccess #PiSky

doi.org/10.1002/asia...

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Precise Synthesis of Pyrene-Based Molecular Nanocarbons Driven by Dehydro-Diels–Alder Reactions Molecular nanocarbons are critical bridges between small polycyclic aromatic hydrocarbons and extended graphene lattices, driving advances across materials science, optoelectronics, and quantum technologies. However, the atomically precise synthesis of such systems, particularly those featuring K-region and cove-type topologies, remains an enduring challenge. Here, we present a de novo modular strategy that overcomes this constraint by directing K-region growth via annulation of preorganized aryl acetylnaphthalene precursors with acetylenedicarboxylate. The strategy mirrors the hierarchical construction of pyrene by formally inserting naphthalene fragments into spatially defined molecular scaffolds. This method integrates Suzuki–Miyaura coupling with a Zn(OTf)2-catalyzed cascade comprising Friedel–Crafts alkylation, dehydro-Diels–Alder cycloaddition, and dehydrogenative aromatization. The platform affords structurally diverse pyrene-based molecular nanocarbons with programmable control over topology and dimensionality, spanning linear, contorted, and three-dimensional π-architectures. These results establish a generalizable blueprint for bottom-up synthesis of complex carbon-rich architectures with atomic precision.

4 months ago

pubs.acs.org/doi/10.1021/... #PiSky

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Size and Geometry Impact the Chiroptical Properties of Double Nanohoops Conjugated nanohoops have attracted much attention in recent years due to their unique optoelectronic properties. A more complex geometry, in which two nanohoops are covalently linked to form a so-cal...

4 months ago

Size and Geometry Impact the Chiroptical Properties of Double Nanohoops | Journal of the American Chemical Society pubs.acs.org/doi/10.1021/... #PiSky

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(Chiro)optical Properties of π-Extended Spiro-Double Carbo[7]helicene Helical nanographenes are a fascinating class of π-extended chiral nanocarbons, where structural helicity imparts intrinsic chirality and unique optoelectronic properties to the rigid carbon framework. In this work, we synthesized a hexa-peri-hexabenzocoronene-based π-extended spiro-double carbo[7]helicene. The helical distortion of the structure was unambiguously confirmed by X-ray crystallography. The optical properties were explored through UV–Vis absorption, fluorescence, and phosphorescence measurements, complemented by density functional theory (DFT) calculations. Remarkably, the π-extended spiro-double carbo[7]helicene exhibited thermally activated delayed fluorescence (TADF) at room temperature and phosphorescence at low temperatures. Chiral HPLC successfully resolved the enantiomers into three fractions: (PP), (MM), and the meso forms (PM)/(MP), and chiroptical studies of the pure enantiomers revealed a moderately high glum value of 1.58 × 10–3. Finally, the origin of the observed dissymmetry factors was rationalized by analyzing the transition electric dipole moments (TEDM) and transition magnetic dipole moments (TMDM) derived from time-dependent density functional theory (TD-DFT) calculations.

4 months ago

(Chiro)optical Properties of π-Extended Spiro-Double Carbo[7]helicene | The Journal of Physical Chemistry Letters pubs.acs.org/doi/abs/10.1... #PiSky

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putin's I.B.S.

@putinsibs.bsky.social

4 months ago

#1st Separate Assault Company of the #DUK_PS, and later the battalion “#Da_Vinci_Wolves” within the Armed Forces of #Ukraine.

Nine years on the front line, eight of them as a volunteer. Battles for #Pisky, #Avdiivka, #Savur_Mohyla, #Shchastia, and #Bakhmut. The first volunteer awarded the title

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[n]Helicenes with Red to Near‐Infrared (NIR) Emissions and Circularly Polarized Luminescence Helicenes, chiral molecules with helical structures, are promising candidates for circularly polarized luminescence (CPL) materials. This review summarizes recent advances in red-to-NIR CPL-active he...

4 months ago

[n]Helicenes with Red to Near‐Infrared (NIR) Emissions and Circularly Polarized Luminescence - Li - Chemistry – A European Journal - Wiley Online Library chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/... #PiSky

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A Persistent Open-Shell m-QDM-Type Diindenoanthracene Diradicaloid with a Large Diradical Character Indenofluorenes (IFs) have received great interest owing to their intrinsic antiaromaticity, open-shell diradical character, and narrow band gaps. Herein, we report the synthesis and comprehensive cha...

4 months ago

A Persistent Open-Shell m-QDM-Type Diindenoanthracene Diradicaloid with a Large Diradical Character pubs.acs.org/doi/10.1021/... #PiSky

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Symmetry‐Breaking in Carbon Nanohoops Enables Room‐Temperature Ternary Single‐Molecule Switching Three pyrene-embedded nanohoops with distinct molecular symmetries were synthesized. Symmetry engineering discretizes the tunneling pathways, yielding three stable conductance states at room temperat...

4 months ago

Symmetry‐Breaking in Carbon Nanohoops Enables Room‐Temperature Ternary Single‐Molecule Switching - Chang - Angewandte Chemie International Edition - Wiley Online Library onlinelibrary.wiley.com/doi/10.1002/... #PiSky

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