Nyob rau hauv xyoo tas los no, kev cog kev loj hlob ntawm nanoscience tau ua rau cov neeg muaj sia muaj sia nyob muaj sia nyob ntau heev. Tshawb nrhiav kev sib raug zoo ntawm nanomaterials thiab bioenvironmental cov khoom los qhia lawv cov cib fim thiab cov kev txwv yog ib qho teeb meem tseem ceeb hauv kev loj hlob ntawm nanobiomaterials thiab kev tswj ntawm lawv cov teeb meem lom. Graphene Oxide yog ib qho oxidized derivative graphene uas muaj ib pab pawg hydroxyl thiab ib pawg epoxy nyob nruab nrab ntawm cov qauv ntawv thiab ib pawg carboxyl ntawm ntug ntawm cov qauv ntawv. Cov kev ua pa uas muaj cov paib no tsis yog ua rau cov kab mob zoo sib xws ntawm graphene oxide, tab sis kuj muaj ntau qhov chaw ntawm cov kev ua haujlwm. Cov khoom no ua graphene oxide biomaterial uas yog cog lus hauv ntau lub teb. Yog li no, qhov kev nkag siab tob tob txog qhov graphene oxide ua ke nrog cov khoom siv roj ntsha plays lub luag haujlwm tseem ceeb hauv nws txoj kev loj hlob yav tom ntej hauv cov kev ua lom thiab kho mob.
Tsis ntev los no, Jiang Xiuyan, pawg neeg tshawb fawb ntawm Changchun lub koom haum Chemistry Applied Science ntawm Suav Academy ntawm Sciences, raws li qhov kev tshawb fawb yav dhau los, siv ib qho kev sib xyaw kom haum rau kev sib xyaw kom haum rau biomolecules thiab tsim kom muaj peev xwm Bronsted acid-base pair graphene oxide. Qhov ntim kho qhov chaw sab nrauv infrared spectroscopy explores hloov proton ntawm ob. Los ntawm nwg qhov kev soj ntsuam ntawm graphene oxide-vim kev sib xyaw cov txheej txheem ntawm cov dej thiab cov xeeb ceem raws li kev ua kom siab, lawv pom tias graphene oxide tuaj yeem tawm mus rau lub qhov dej ntawm nws tus kheej thiab cov protonate cov duab monolayer. Kuj ceeb tias, qhov kev muaj peev xwm ntawm no protonated monolayer tsis ploj nrog qhov nce ntawm tsis muaj peev xwm ntawm lub system, thiab tus cwj pwm ntawm cov organic acids me me xws li formic acid txawv kiag li. Graphene oxide yog ib lub qauv uas muaj ob sab sib npaug nrog ib qho hnyav atomic. Cov pawg neeg ionizable acidic nyob rau hauv cov pa uas muaj cov pa functional nyob rau ntawm cov atom uas nyob ib sab lossis conjugated thiab muaj microenvironments sib txawv los cuam tshuam lwm tus ionization. Rau graphene oxide los xij hauv cov dej sib tov, cov dissociated protons diffuse rau hauv kev daws teeb meem kom cov graphene oxide aqueous kua acidic, thiab cov dissociated protons ua txhua yam rau graphene oxide / dej interface. Cov oxygen-muaj cov kev ua haujlwm hauv cov pawg tig rov qab oxidize tus qauv proton zoo heev ntawm graphene oxide. Vim cov qauv ntawm ob qho tib si ntawm graphene oxide, cov dissociated protons ntawm graphene oxide / dej interface daim ntawv qis qis hydrogen bonds nrog dej molecules khi rau ntawm qhov graphene oxide thiab ze ze cov pa oxygen uas ua haujlwm, reconstituting no Hydrogen tsevneeg yog ua tiav ntawm lub dav hlau ntawm daim ntawv graphene oxide. Yog li, cov sau phau ntawv hais tias cov kua qaub thiab cov proton conductivity ntawm graphene oxide ua graphene oxide tshwm li ob lub qhov sib npaug ntawm cov pov thawj uas muaj kev sib haum xeeb, uas yuav tsum tau dissociated thiab kis tau thaum lub chaw tsim muaj Bronsted puag nyob rau ntawm qhov kev sib tshuam. Proton. Rau cov graphene oxide thiab carboxyl kaw lawv tus kheej-assembled monolayer systems, ntxiv rau txo cov pH ntawm cov kev daws teebmeem, graphene oxide tuaj yeem hloov tau protons ntawm qhov interface ntawm graphene oxide / dej / nws tus kheej-assembled monolayer zaj duab xis. Cov sau phau ntawv kuj tshawb xyuas cov teebmeem ntawm kev sib txuas ntawm cov qauv proton thiab proton conductivity ntawm proton hloov ntawm lub graphene oxide interface. Qhov hauj lwm no tsis tsuas zoo tsim kho qhov kev nkag siab ntawm lub nano-bio interface, tab sis kuj pom tias kev hloov mus rau lwm lub npe kuj yog ib qho chaw tsis muaj qhov tsis zoo ntawm bioavailability of graphene oxide.
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Hu rau (Tswv Yim & Muag): Mr.Kevin
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