Benzene mu 126 zviyero
Masayendisiti okuAustralia munguva pfupi yapfuura akatsanangura makemikoro ayo ave nenguva achikwezva pfungwa dzavo. Zvinotendwa kuti mhedzisiro yechidzidzo ichapesvedzera magadzirirwo matsva emasero ezuva, organic light emitting diodes uye humwe hunotevera hutekinoroji hunoratidza kushandiswa kwebenzene.
benzene organic chemical compound kubva kuboka remaarene. Ndiyo yakapfava carbocyclic neutral aromatic hydrocarbon. Icho, pakati pezvimwe zvinhu, chikamu cheDNA, mapuroteni, huni nemafuta. Chemist vanga vachifarira dambudziko rekuumbwa kwebenzene kubva pakuparadzaniswa kwekomboni. Muna 1865, muongorori wemakemikari wekuGermany Friedrich August Kekule akafungidzira kuti benzene icyclohexatriene ine nhengo nhanhatu umo mabhondi ega uye maviri anochinjana pakati pemaatomu ecarbon.
Kubva kuma30, nhaurirano dzanga dzichiitika mumakemikari madenderedzwa nezvechimiro chebenzene molecule. Kukakavadzana uku kwave kuwedzera kukurumidza mumakore achangopfuura nekuti benzene, inoumbwa nemaatomu ekabhoni matanhatu akabatana nemaatomu matanhatu ehydrogen, ndiro diki diki rinozivikanwa molecule rinogona kushandiswa mukugadzira optoelectronics, inzvimbo yehunyanzvi yeramangwana. .
Makakatanwa akapoteredza chimiro chemorekuru anomuka nekuti, kunyangwe riine zvikamu zveatomu zvishoma, riripo munzvimbo inotsanangurwa nemasvomhu kwete nemativi matatu kana mana (kusanganisira nguva), sezvatinoziva kubva pane zvakaitika kwatiri, asi. kusvika ku126 saizi.
Nhamba iyi yakabva kupi? Nokudaro, imwe neimwe ye 42 maerekitironi anoumba molecule inotsanangurwa muzvikamu zvitatu, uye kuawedzera nenhamba yezvikamu zvinopa 126 chaiyo. Saka izvi hazvisi zvechokwadi, asi zviyero zvemasvomhu. Kuyerwa kweiyi yakaoma uye diki system kusvika parizvino yaratidza kuti haigoneke, izvo zvaireva kuti maitiro chaiwo ema electrons mu benzene haakwanise kuzivikanwa. Uye iyi yaive dambudziko, nekuti pasina ruzivo urwu hazvingagone kutsanangura zvizere kugadzikana kwemorekuru muhunyanzvi hwekushandisa.
Ikozvino, zvakadaro, masayendisiti anotungamirwa naTimothy Schmidt weARC Center of Excellence muExciton Science uye University of New South Wales muSydney vakakwanisa kuburitsa chakavanzika. Pamwe chete nevamwe vaaishanda navo kuUNSW neCSIRO Data61, vakashandisa nzira yakaomesesa yealgorithm-based inonzi Voronoi Metropolis Dynamic Sampling (DVMS) kumamorekuru ebenzene kumepu mabasa awo ewavelength pamusoro pese. 126 saizi. Iyi algorithm inokutendera iwe kugovera nzvimbo yediki mu "matiles", imwe neimwe inoenderana nemvumo yezvinzvimbo zvema electrons. Mhedzisiro yechidzidzo ichi yakabudiswa mupepanhau Nature Communications.
Chainyanya kufarira masayendisiti kwaive kunzwisisa kwekutenderera kwemaerekitironi. "Zvatakawana zvaishamisa kwazvo," Purofesa Schmidt anoti mubhuku racho. "Maerekitironi e-spin-up ari mukabhoni anosungirirwa kaviri mune yakaderera-simba matatu-dimensional masisitimu. Chaizvoizvo, inoderedza simba remorekuru, ichiita kuti iwedzere kugadzikana nekuda kwema electrons ari kusundirwa kure uye kudzingwa. " Kugadzikana kwemorekuru, zvakare, hunhu hunodiwa muhunyanzvi hwekushandisa.
Onawo:
