Jorge S. Valera

El Prof. Emilio M. Pérez es nombrado nuevo director del Instituto IMDEA Nanociencia, continuando nuestra misión de impulsar la investigación de excelencia en nanociencia y nanotecnología.

+info nanociencia.imdea.org/es/imdea-nan...

Special kudos for the work to Marina González and Ana M. García! I would also like to thank all the reviewers for their good insights and their aid to clarify and to improve the concepts, characterization and, in general, the discussion included in the text. (9/9)

Thus, this work highlights the importance of the multiscale understanding of self-assembly processes of pi-conjugated systems, going from the monomer to the material and how this understanding can permit to unlock its full potential in organic electronics. (8/9)

The obtaining of single crystals permitted us to further understand this process and their quality and outstanding electronic properties, prompted us to study their optical waveguiding behavior, disclosing an optical loss coefficient which is among the best ones shown by organic molecules (7/9)

Subsequent pXRD studies permitted us to demonstrate how these aggregates increase their internal order with the increasement of dimensionality, thus proving that they act as 'precursors' of macroscopic crystals, which frankly, I think is pretty cool! (6/9)

Chiral and Morphological Anisotropy of Supramolecular Polymers Shaped by a Singularity in Solvent Composition Understanding the role of solvent in translating molecular anisotropy to supramolecular polymers is in the early stages. A solvent’s influence on the strength of different noncovalent interactions can explain anisotropic growth in some cases, but its effect on cooperative processes, particularly in mixed solvents, remains obscure. We report the self-assembly of a series of chiral perylene bisimides in water–cosolvent mixtures, and the results highlight the fascinating influence of solvent–solute interactions on supramolecular anisotropy, both chiral and morphological. The initial assembly is agnostic to solvent composition, resulting in weakly chiral, spherical nanostructures. In an extremely narrow solvent composition range, the nanospheres transform into long, prominently chiral supramolecular polymers. Further, chirality can be fully reversed by changing the good (achiral) cosolvent. We elucidate how solvent modulates specific noncovalent interactions and governs the kinetics and thermodynamics of key processes, such as spontaneous phase segregation, secondary nucleation, and cooperative growth. In the context of supramolecular polymerization, our results encourage one to steer the focus away from the physical attributes of a solvent (polarity, phase diagram, etc.) and toward the complexities of solvent–solute interactions.

...to aggregates of increasing dimensionality with 'certain crystallinity'. This reminded me to this work of my colleague T. Pal, although our process, given the partial precipitation, seems more in line with self-assembly on-route to non-classical crystallization (5/9)
pubs.acs.org/doi/10.1021/...

In our work, we study the self-assembly in solution of a BODIPY derivative and its behaviour in solid state, finally assessing its performance as optical waveguide.
In solution state, we observed different species depending on the water content, as well as a time-dependent process leading... (4/9)

Still, there are examples of supramolecular fibres which undergo subsequent non-classical crystallization, like shown by the group of Rybtchinski or in this beautiful work from Y. Ogawa, V. Praveen and coworkers, but still there is work to do....(3/9)
onlinelibrary.wiley.com/doi/full/10....

Despite the huge progress achieved in the supramolecular polymerization of pi-conjugated systems in solution, the translation of these features to the solid state are seldom understood. This limitation also stems from the different molecular designs required for each type of study. (2/9)

Take a look to our collaborative work with the group of Pilar Prieto (UCLM) exploring the self-assembly 'across scales' of a BODIPY derivative, just published in @chemicalscience.rsc.org with @davidgrlab.bsky.social Let's make a thread to talk about it...(1/9)

pubs.rsc.org/en/content/a...

And we close two intense weeks of science at the fabulous XXI Young Spanish Chemists Symposium in the wonderful Zaragoza. Discovering local flavours, meeting old colleagues, learning while having fun and getting in contact with the emerging talents of the spanish chemical community is unbeatable.

Last week I had the chance to present the results of my MSCA project with @davidgrlab.bsky.social in the MADPOL25 @madpol25.bsky.social at the beautiful Alcalá de Henares. It was awesome to meet brilliant researchers in polymer chemistry as well as lifelong friends in an idillic location!

También aprovechamos la ocasión para hablar de la carrera investigadora y las distintas líneas de investigación del grupo @davidgrlab.bsky.social. Esta actividad fue financiada por el grupo STM-RSEQ.

La semana pasada, con motivo de la Semana de la Ciencia, impartí, junto con mis compañeros Fátima,Jacobo y Bea nuestro taller "Química y Luz", con el objetivo de acercar a estudiantes de Bachillerato a conceptos básicos de química supramolecular y nanociencia.

1/ ECMO takes over heart and lung function, but current systems can damage blood and cause bleeding or clots.

With a #HealthResearch grant, @hermanslab.bsky.social is developing a system that transports blood safely, reducing damage. 👇

https://tinyurl.com/4694utw9

Light-intensity-dependent out-of-equilibrium processes toward dimensionally distinct nanopolymorphs Precise control over out-of-equilibrium states is key to creating smart materials. Here, we report a synthetic supramolecular polymer system that forms distinct out-of-equilibrium structures of different dimensionalities depending on light intensity. Real-time high-speed AFM imaging revealed the underlying mechanisms, including light-driven facet-selective polymorphic transformation and Ostwald ripening. This study offers a general design principle for adaptive materials whose structures and functions are finely tuned by the amount of energy input.

Online now: Light-intensity-dependent out-of-equilibrium processes toward dimensionally distinct nanopolymorphs

Today #GoogleDoodle is about #DNA 🧬 the molecule of life 🧬 which is just 2 nanometres wide!

At IMDEA Nanociencia, we use this remarkable molecule to probe and measure nanoscale phenomena.
↪️ Check out our latest featured research: nanociencia.imdea.org/home-en/news...

#SmallIsDifferent

Chemical kinetics course - YouTube Chemical kinetics course Class 1: Historical introduction Class 2: 0-2nd order, equilibrium (analytical) Class 3: Reactions in series/parallel, Michaelis-Men...

Want to learn chemical kinetics? Watch my online course (master level): youtube.com/playlist?list=PLMOBJket5g1zsNs-a8hlJ7ImVcWE180KR&si=FhqmABYzb2MDS-p3

vMASC Call For Abstracts (for 2025/26) vMASC Early-Career Seminars: Call for Abstracts The organising committee of the virtual Macrocyclic and Supramolecular Chemistry (vMASC) seminar series are inviting abstracts from all early-career …

📣 Call for Abstracts - vMASC 📣

We are currently inviting abstracts from all early-career researchers (Master’s, PhD, PDRA) for oral presentations in 2025/2026 as part of our monthly vMASC seminar series.

Submission deadline 📆 18th Aug 2025

Find out more on mascgroup.co.uk/vmasc-4/vmas...

An information ratchet improves selectivity in molecular recognition under non-equilibrium conditions - Nature Nanotechnology An abiotic information ratchet mechanism increases selectivity for the correct DNA duplex from 2:1 at equilibrium to 6:1 under energy-dissipating conditions.

Information ratchets drive many molecular motors, but we can also use them for other nonequilibrium processes like performing error correction in a molecular recognition process to increase selectivity. Published today in @natnano.nature.com
www.nature.com/articles/s41...

The Ascent of Supramolecular Polymers and Gels in Asymmetric Catalysis SPs and gels emerged as modular platforms for asymmetric catalysis. This review ranks literature reports according to the achiral or chiral nature of the monomers bearing the catalytic site. New para...

Great pleasure to write "state-of-the-art" on the use of supramolecular polymers and gels in asymmetric catalysis. Hope it will be helful for the community: chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/...

Magnificent days in Bilbao attending the XL Bienal RSEQ, where I had the opportunity to show my current research at @davidgrlab.bsky.social. Combining awesome food (and city) with outstanding discussions with brilliant researchers of the spanish scientific community made the past week unforgettable!

Awesome, Roberto!!! Super congrats!! 😊😊

We are very proud to share our latest work about our Clip-off Chemistry approach applied to COFs for the synthesis of novel macrocycles, now in @science.org. Huge congratulations to all our amazing team and collaborators that made this project possible!! ✨

🚀 New diffusion mechanism in biomolecular #condensates!
In our latest work in @natnano.nature.com, we report ballistic wave diffusion — a fundamentally different transport mode featuring ultrasharp fronts that propagate linearly in time. Congrats to Weixiang Chen! www.nature.com/articles/s41...

Self-assembled nanotubes from the supramolecular polymerization of discrete cyclic entities Inspired by the extraordinary attributes displayed by nanotubes in Nature, the creation of self-assembled nano-sized hollow tubes is an area of significant and growing interest given its potential app...

Take a look to our last review in @chemsocrev.rsc.org, where we discuss the different strategies to obtain self-assembled nanotubes from the supramolecular polymerization of discrete cyclic entities. Congrats to Marina, Jacobo, Paula, Fátima and @davidgrlab.bsky.social
pubs.rsc.org/en/content/a...

Un mural gigante cosido con dos décadas de investigaciones lanza la protesta en la Complutense contra el “recorte” de Ayuso www.eldiario.es/madrid/somos...

Congrats to Aritra! New in @angewandtechemie.bsky.social "Photoactivated Enzymatic Reaction Network Enables Spatiotemporal Programming of Thiol/Disulfide Redox Systems"
onlinelibrary.wiley.com/doi/abs/10.1... #systemschemistry #photochemistry #CRN #Noneqsys @humboldt-foundation.de #SFB1552

#NoOlvidamos
#Faltan7291
#NoIbanAMorirIgual

I’m excited to share that I will be moving to the University of Ulm as a junior group leader and I have a fully-funded open PhD position co-supervised by me and Max von Delius @mvdelius.bsky.social . Apply at benjamin.roberts@unipd.it, any shares would be appreciated!

www.bmwrlab.com/work-with-us