ArticleAdvanced science (Weinheim, Baden-Wurttemberg, Germany)2026
Pressure-Activated and Retained Blue Emission in Melamine Through Hydrogen-Bond and Packing Regulation.
Article in Advanced science (Weinheim, Baden-Wurttemberg, Germany), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
9 authors.
Funding
Abstract
Pressure provides a direct way to regulate molecular packing and excited-state relaxation in organic crystals, but retaining pressure-induced emission after decompression remains challenging. Here, we report pressure-activated and retained blue emission in melamine (MA), a simple nitrogen-rich molecular crystal assembled by N-H···N hydrogen bonds. MA shows weak blue emission at ambient conditions, whereas compression markedly enhances its photoluminescence and pressure release produces an even brighter state, with an approximately 35-fold increase in integrated emission intensity. Time-resolved photoluminescence and UV-vis absorption measurements indicate that the retained enhancement is not mainly governed by lifetime prolongation or optical-absorption changes. In situ Raman, FTIR, and powder X-ray diffraction reveal pressure-induced changes in molecular and lattice vibrations, the N─H-related hydrogen-bonding environment, and anisotropic lattice compression, together with increasing structural disorder at higher pressures and incomplete recovery after decompression. TD-DFT calculations show that N─H···N shortening slightly increases the S
Indexed as
Identifiers
What Socratic holds
Registered trials
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 Socratic graph.