Pa October 15th, ofufuza a Chalmers University of Technology ku Sweden apanga bwino mtundu watsopano wa galasi lokhazikika komanso lokhazikika lomwe liri ndi ntchito zomwe zingathe kuphatikizapo mankhwala, zowonetsera zamakono zamakono ndi zamakono zamakono zamakono.Kafukufukuyu adawonetsa kuti kusakaniza mamolekyu angapo (mpaka eyiti pa nthawi) kumatha kupanga zinthu zomwe zimagwira ntchito bwino monga magalasi opanga magalasi omwe amadziwika pano.
Galasi, yomwe imadziwikanso kuti "amorphous solid", ndi chinthu chopanda dongosolo lautali-sapanga makhiristo.Kumbali inayi, zida za crystalline ndi zida zomwe zili ndi dongosolo lokhazikika komanso lobwerezabwereza.
Zomwe timatcha "galasi" m'moyo watsiku ndi tsiku zimachokera ku silika, koma galasi ikhoza kupangidwa ndi zipangizo zosiyanasiyana.Choncho, ochita kafukufuku nthawi zonse amakhala ndi chidwi chofuna njira zatsopano zolimbikitsira zipangizo zosiyanasiyana kuti apange dziko la amorphous, zomwe zingayambitse kupanga magalasi atsopano okhala ndi zinthu zabwino komanso ntchito zatsopano.Kafukufuku watsopano wofalitsidwa posachedwapa mu nyuzipepala ya sayansi ya "Science Advances" ikuyimira sitepe yofunika kwambiri pa kafukufukuyu.
Tsopano, mwa kungosakaniza mamolekyu ambiri osiyanasiyana, mwadzidzidzi tinatsegula mwayi wopanga magalasi atsopano ndi abwino.Amene amaphunzira mamolekyu achilengedwe amadziwa kuti kugwiritsa ntchito kusakaniza kwa mamolekyu awiri kapena atatu kungathandize kupanga galasi, koma ochepa angayembekezere kuti kuwonjezera mamolekyu ambiri kudzapeza zotsatira zabwino kwambiri, "gulu lofufuza linatsogolera kafukufuku.Pulofesa Christian Müller wochokera ku dipatimenti ya Chemistry ndi Chemical Engineering ya Ulms University adatero.
Zotsatira zabwino zamtundu uliwonse wopangira magalasi
Madzi akazizira popanda crystallization, galasi amapangidwa, njira yotchedwa vitrification.Kugwiritsa ntchito kusakaniza kwa mamolekyu awiri kapena atatu kulimbikitsa mapangidwe a galasi ndi lingaliro lokhwima.Komabe, zotsatira za kusakaniza mamolekyu ambiri pa luso lopanga galasi lalandira chidwi chochepa.
Ofufuzawa adayesa kusakanikirana kwa mamolekyu asanu ndi atatu a perylene, omwe okhawo amakhala ndi brittleness-khalidweli limagwirizana ndi kumasuka komwe zinthu zimapanga galasi.Koma kusakaniza mamolekyu ambiri palimodzi kumabweretsa kuchepa kwakukulu kwa brittleness ndikupanga galasi lolimba kwambiri lokhala ndi brittleness yotsika kwambiri.
“Kuwonongeka kwa magalasi omwe tidapanga pakufufuza kwathu ndikotsika kwambiri, komwe kumayimira luso labwino kwambiri lopanga magalasi.Sitinayeze zinthu zakuthupi zokha komanso ma polima ndi zinthu zina (monga magalasi azitsulo ambiri).Zotsatira zake zimakhala zabwino kuposa galasi wamba.Magalasi opangira magalasi a galasi lazenera ndi amodzi mwa opanga magalasi abwino kwambiri omwe timawadziwa, "anatero Sandra Hultmark, wophunzira wa udokotala mu Dipatimenti ya Chemistry ndi Chemical Engineering komanso mlembi wamkulu wa phunziroli.
Wonjezerani moyo wazinthu ndikusunga zothandizira
Zofunikira zopangira magalasi okhazikika kwambiri ndi matekinoloje owonetsera monga zowonera za OLED ndi matekinoloje amphamvu monga ma organic solar cell.
“Ma OLED amapangidwa ndi zigawo zagalasi za mamolekyu otulutsa kuwala.Ngati zili zokhazikika, zitha kukulitsa kulimba kwa OLED komanso kulimba kwa chiwonetserocho, "adatero Sandra Hultmark.
Ntchito ina yomwe ingapindule ndi galasi lokhazikika kwambiri ndi mankhwala.Amorphous mankhwala kupasuka mofulumira, amene amathandiza mwamsanga kuyamwa yogwira pophika atalowetsedwa.Choncho, mankhwala ambiri amagwiritsa ntchito mawonekedwe a galasi.Kwa mankhwala, ndikofunikira kuti vitreous material isawonekere pakapita nthawi.Kukhazikika kwamankhwala agalasi kumapangitsa kuti mankhwalawa azikhala ndi nthawi yayitali.
"Ndi magalasi okhazikika kapena magalasi atsopano opangira magalasi, tikhoza kuwonjezera moyo wautumiki wa zinthu zambiri, potero kupulumutsa chuma ndi chuma," adatero Christian Müller.
"The vitrification wa Xinyuanperylene mix with Ultra-low brittleness" yasindikizidwa mu magazini ya sayansi "Science Advances".
Nthawi yotumiza: Dec-06-2021