I-Dithiothreitol (DTT), i-CAS: i-3483-12-3, njenge-reagent yophando lwezenzululwazi esetyenziswa ngokubanzi, isoloko isetyenziswa njenge-agent yokunciphisa i-sulfhydryl DNA, i-agent ye-deprotecting, kunye nokunciphisa iibhondi ze-disulfide kwiiprotheni.Uhlobo olutsha lwezongezo eziluhlaza ludlala indima ebalulekileyo ekuphuculeni ukusebenza kwebhetri.
I-Dithiothreitol (i-DTT) i-arhente yokunciphisa eyomeleleyo, kwaye ukuncitshiswa kwayo kubangelwa ubukhulu becala ngenxa yokuzinza kwe-conformational ye-ring-membered ring ezintandathu (equlethe iibhondi ze-disulfide) kwimeko yayo ye-oxidation.Ukuncitshiswa kwebhondi ye-disulfide eqhelekileyo yi-dithiothreitol ibandakanya iimpendulo ezimbini ezilandelelanayo ze-sulfhydryl-disulfide bond exchange reaction.Amandla okunciphisa i-dithiothreitol (i-DTT) ichaphazeleka ngexabiso le-pH, kwaye inokudlala kuphela umphumo wokunciphisa xa ixabiso le-pH likhulu kune-7. Oku kungenxa yokuba kuphela i-anions ye-thiolate e-deprotonated iyasebenza, ngelixa i-mercaptans ingenzi, kwaye pKa yamaqela e-mercapto ngokuqhelekileyo yi-8.3.
I-Dithiothreitol (i-DTT) isetyenziswa ngokuqhelekileyo ukunciphisa iibhondi ze-disulfide zeemolekyuli zeprotheni kunye ne-polypeptides.Ngokuqhelekileyo isetyenziswe njengeprotheyini ye-sulfhydryl ekhuselayo kwaye isetyenziswe kumalungiselelo okugonya ukukhusela i-protein cysteine intsalela ekwenzeni i-intramolecular kunye ne-intermolecular disulfides.isitshixo.Kwinkqubo yokufumanisa i-nucleic acid, i-dithiothreitol (i-DTT) inokutshabalalisa iibhondi ze-disulfide kwiprotheni ye-RNase, i-denature i-RNase, kwaye iququzelele ukuqhutyelwa kweemvavanyo ezifana nesakhiwo selayibrari ye-RNA kunye nokukhulisa i-RNA.I-Dithiothreitol (DTT) iphinda isetyenziswe njenge-antidote ukukhusela iiseli kunye nezicubu, njenge-radioprotectant, njl.
Nangona kunjalo, i-dithiothreitol (i-DTT) kaninzi ayinakukwazi ukunciphisa iibhondi ze-disulfide ezifakwe kwi-protein structure (i-solvent ayifumaneki).Ukuncitshiswa kwezibophelelo ze-disulfide kudla ngokufuna ukutshintshwa kweprotein kuqala.
Ukuze uthintele umphumo we-shuttle yeebhetri ze-lithium-sulfur kunye nokuphucula ukusebenza kwe-electrochemical yeebhetri ze-lithium-sulfur, zama ukusebenzisa i-dithiothreitol (DTT) njenge-arhente yokucheba ukucheba i-polysulfides ephezulu ukuze uthintele ukunyibilika.I-Threitol (i-DTT) ixutywe kwiindonga ezininzi ze-carbon nanotubes (MWCNTs) iphepha ukulungiselela i-DTT interlayer.I-interlayer ye-DTT ibekwe phakathi kwephepha le-electrode elilungileyo kunye ne-separator yeqhosha le-lithium-sulphur iqhosha lesiqingatha seseli, kunye ne-sulfure ephethe ubuninzi bephepha le-electrode efanelekileyo malunga ne-2mg / cm2.Iziphumo zoqwalaselo ze-SEM ziqinisekisa ukuba i-DTT isasazwe ngokufanayo kumphezulu kunye nokungabikho kwephepha le-MWCNTs.Iziphumo zovavanyo lwe-Electrochemical zibonisa ukuba ibhetri ye-lithium-sulfur kunye nesakhiwo se-sandwich ye-DTT inomthamo wokuqala wokukhupha umthamo we-1288 mAh / g ngesantya se-0.05C.Ngethuba lokuqala, ukusebenza kakuhle kwe-coulombic kusondele kwi-100%, kwaye umthamo othile ngexesha lokuhlawula kunye nokukhutshwa kwi-0.5C, 2C, kunye ne-4C amazinga afikelela kwi-650mAh / g, 600mAh / g, kunye ne-410mAh / g, ngokulandelanayo.Ukuqaliswa kwesakhiwo sesandwich ye-DTT sinokucheba ngokufanelekileyo i-polysulfides ephezulu.Ikhusela ukufudukela kwi-lithium negative electrode, ngaloo ndlela inqanda umphumo we-shuttle kunye nokuphucula ukuzinza komjikelezo kunye nokusebenza kakuhle kwe-coulomb yeebhetri ze-lithium-sulfur.
Kuyafaneleka ukuba uqaphele ukuba i-dithiothreitol (i-DTT) yinto enetyhefu.Ngokomzekelo, phambi kweentsimbi zenguqu, i-dithiothreitol (DTT) inokubangela umonakalo oxidative kwiimolekyuli zezinto eziphilayo.Ngexesha elifanayo, i-dithiothreitol (i-DTT) ) Inokuphucula i-toxicity yezinye iikhompawundi eziqukethe i-arsenic kunye ne-mercury.I-Dithiothreitol (i-DTT) inevumba elibi, elinokuba yingozi empilweni ngenxa yokuphefumla kunye nokudibanisa kwesikhumba.Ngoko ke, kuyimfuneko ukuyikhusela ngexesha lokusebenza, ukunxiba iimaski, iiglavu kunye neglavu, kwaye usebenze kwi-fume hood.
I-Thithreitol (DTT) njenge-arhente yokucheba kwiibhetri ze-lithium-sulfur
Ibhetri ye-lithium-sulfur ithathwa njengenkqubo yebhetri enamandla amakhulu ngenxa yobuninzi bamandla kunye nokukhuselwa kwendalo.Nangona kunjalo, "ifuthe le-shuttle" le-polysulfides likhokelela kubomi bomjikelo obuthathaka kunye nokuzikhupha okukhulu, okuthintela ukusetyenziswa kwayo.isizathu.
I-Thiothreitol (DTT) inokongezwa kwibhetri njenge-arhente yokucheba.Iyakwazi ukucheba ngokukhawuleza iibhondi ze-disulfide kwiqondo lokushisa, i-shear high-order polysulfides ukukhusela ukuchithwa kwazo, ukuvimbela umphumo we-shuttle, kunye nokwandisa i-lithium Ukusebenza kwe-electrochemical yeebhetri zesulfure.
I-Dithiothreitol (DTT) njengesongezo se-electrolyte kwi-alkaline aluminiyam / iibhetri zomoya
Kwi-alkaline aluminiyam / iibhetri zomoya, i-dithiothreitol inokwenza i-uniform kunye ne-stable layer yokukhusela ngokusebenzisa iibhondi eziguquguqukayo ze-covalent kumphezulu we-anode ye-aluminium, inqanda ukuzimela kwe-anode ye-aluminium, kunye nokuphucula ngokufanelekileyo ukusebenza kwayo.
Ixesha lokuposa: Dec-31-2021