Keemistirii
Yeroo hunda argannoon saayinsii tokko, akkuma raadiyeemii, dhala namaatiif faayidaa ta'uu kan danda'u carraan jira.
— (1921)
Molekuliin xiqqaan untreated PTFE maxxanse, sana booda ethanol'n dhiqamee irraa ba'e
Barruun JACS tokko fluoro-crown ether phosphate adhesives lab lap-shear tests keessatti PTFE baay'ee inert ta'e bond godhan, ethanol washing'n remove godhamuu danda'an gabaasa. CyclicFP-fmoc untreated PTFE irratti 1.3 MPa ga'e, ductile cohesive failure waliin; related variant 2.3 MPa ga'e. Mechanism fluorine-fluorine interactions PTFE bira, plus hydrogen bonding fi pi-stacking adhesive keessaa, spectroscopic evidence'n deeggarame. Kun materials result promising dha; commercial glue miti, universal recycling fix miti, full environmental-safety assessment miti.
Carbon-bismuth triple bond textbook sigma-fi-pi picture eessa hojii dhaabu agarsiisa
Qorannoon Science molecular ion CBi-, heavy-element cousin species triple-bonded beekamoo, cryogenic photoelectron spectroscopy fi relativistic quantum calculations'n qore. Bu'aan strong spin-orbit coupling classical sigma fi pi bonding framework gara relativistic Kramers pairs total angular momentum'n labelled ta'anitti qindeessuu danda'a jechuun direct evidence dha. Ordinary chemical bonding dogoggora hin godhu; heavy atoms baay'ee ulfaataa bira bookkeeping maaliif jijjiiramu agarsiisa.
Solid material tokko visible blue light gara UVtti sunlight-level intensity irratti jijjiira — garuu solar-energy machine miti
Qorattoonni DHI-based organic crystals alkyl side chains π-electron system eegan, triplet energy socho'uu immoo hin dhorkine, engineer godhan. Best iBu-DHI/Ir(ppy)₃ solid film visible-to-UV triplet-annihilation upconversion 1.9% absolute quantum yield fi 1.2 mW cm⁻² threshold, solar intensity naannoo 445 nm waliin wal-dhiyaatu, argate. Kun solid-state photon upconversion'f materials advance dhugaa dha. Working solar device miti, 'free UV' miti, visible sunlight useful UV chemistry scale guddaan oofuu danda'a jechuun proof miti.