Grateful to all who made this work possible - especially Zhichen, Hanjun, Yi, @ProfSavoie, @DouLetian. This closes an important chapter that started at Purdue, and opens a new one at @universityofga . Much more to explore in how crystals break symmetry and acquire chirality.

##IonicLiquids significantly enhance #Perovskite solar cell stability, enabling devices to retain 90% performance after 1,500 hours at 90°C under continuous sunlight. @NatureEnergyJnl doi.org/hbdc4h techxplore.com/news/2025-12-…

Our latest work in @DouLetian lab just published! @NatureChemistry We synthesized and obtained single crystal of intralayer bidentate "B-D" phase 2D perovskites which show superior stability in films and devices! nature.com/articles/s41557-0…

I'm excited to announce my new role as Assistant Professor in the Dept. of Chem @universityofga! Huge THANK YOU♥️to my Ph.D. advisor, Dr. Jinsang Kim, postdoc advisor @DouLetian, and friends @UGAChemistry P.S. To honor UGA's mascot, my 🐶 is in the profile chem.uga.edu/directory/peopl…

In theory, every polymer returns to monomer above its ceiling temperature. But for the bulk of plastic waste streams, simple “heat it up” strategies for recovering monomer are defeated by competitive thermal degradation. For the past few years we’ve been working with the @DouLetian group to see if we could tune the ceiling temperatures of polybutadienes, a versatile and potentially very inexpensive class of polymers, down to a useful range. We’ve now comprehensively studied several design strategies—radical delocalization, lone-pair donation, hyperconjugation, steric substitution—and discovered an embarrassment of riches. It turns out to be relatively easy to suppress the ceiling temperature so that monomer recovery is possible without resorting to bulky or complex substitutions that would limit molecular weights or scalability. Perhaps more surprisingly, several simple all-carbon designs are predicted to be controllably depolymerizable, including an experimental demonstration of quantitative monomer recovery from the remarkably simple 2,5-dimethyl-2,4-hexadiene repeat unit. This work was led by the phenomenal Bumjoon Seo (now faculty at Seoultech) with experiment led by Qixuan Hu (now at Dow). doi.org/10.26434/chemrxiv-20…

Toward Sustainable Polydienes | Journal of the American Chemical Society @LifeAtPurdue @NDscience @NotreDame @ProfSavoie @DouLetian pubs.acs.org/doi/10.1021/jac…

Now online: Article by Jichen Dong, @DouLetian, @EnzhengS & co-workers @Westlake_Uni @PurdueChemE Kinetic Wulff-shaped heteroepitaxy of phase-pure 2D perovskite heterostructures with deterministic slab thickness nature.com/articles/s44160-0… ($)

.@DouLetian et al. from @LifeAtPurdue report a discrete island–convex dome morphology in #perovskite by solvent engineering. 2D/3D #heterostructures enable the NIR LED efficiency of 31.4% with a peak radiance of 929 W sr-1 m-2. #PeLEDs #GettingApplied nature.com/articles/s41467-0…

The emergence of moiré superlattices in twisted two-dimensional halide perovskites has been reported, revealing the emergence of localized bright excitons with enhanced emissions and trapped charge carriers. @HuangLabPurdue @DouLetian @Research_Purdue nature.com/articles/s41563-0…

We are pleased to have Prof. Letian Dou @DouLetian from @LifeAtPurdue highlighting the importance of #Dimensionality_engineering in understanding the #halide_migration in #PSCs⚡💡