Kimiyyar sinadarai
A koyaushe akwai damar cewa binciken kimiyya na iya zama, kamar radium, fa'ida ga ɗan adam.
— (1921)
Ƙaramin molecule ya manne wa PTFE da ba a yi masa treatment ba, sannan ethanol ya wanke shi ya tafi
Wata takarda a JACS ta rahoto fluoro-crown ether phosphate adhesives da ke manne wa PTFE mai matuƙar inert a laboratory lap-shear tests, yayin da daga baya za a iya cire su ta wankewa da ethanol. CyclicFP-fmoc ya kai 1.3 MPa a untreated PTFE tare da ductile cohesive failure; wani related variant ya kai 2.3 MPa. Spectroscopic evidence yana goyon bayan mechanism inda fluorine-fluorine interactions suke taimaka wa interface da PTFE, yayin da hydrogen bonding da pi-stacking suke taimaka wa adhesive layer. Promising materials result ne, ba commercial glue ba tukuna, ba universal recycling solution ba, kuma ba cikakken environmental-safety assessment ba.
Carbon–bismuth triple bond tana nuna inda textbook sigma-and-pi picture ke daina aiki
Wani Science study ya probe CBi⁻ molecular ion, heavy-element cousin na familiar triply bonded species, da cryogenic photoelectron spectroscopy da relativistic quantum calculations. Result direct evidence ne cewa strong spin-orbit coupling na iya reorganize classical sigma/pi framework zuwa relativistic Kramers pairs da total angular momentum. Wannan ba ya sa ordinary bonding wrong; yana nuna dalilin da bookkeeping ke canzawa kusa da very heavy atoms.
Wani solid material yana juya visible blue light zuwa UV a sunlight-level intensity — amma ba solar-energy machine ba ne
Masu bincike sun engineer DHI-based organic crystals da alkyl side chains ɗinsu ke kare π-electron system ba tare da hana triplet energy motsi ba. Mafi kyawun iBu-DHI/Ir(ppy)₃ solid film ya yi visible-to-UV triplet-annihilation upconversion da 1.9% absolute quantum yield da threshold 1.2 mW cm⁻² kusa da solar intensity a kewayen 445 nm. Wannan real materials advance ne ga solid-state photon upconversion. Ba working solar device ba ne, ba “free UV” ba, kuma ba proof cewa visible sunlight yanzu zai iya drive useful UV chemistry at scale ba.