I-Dithiothreitol (DTT), i-CAS: 3483-12-3, njenge-reagent yocwaningo lwesayensi esetshenziswa kabanzi, ivame ukusetshenziswa njenge-ejenti yokunciphisa i-sulfhydryl DNA, i-ejenti yokunciphisa ukuvikela, kanye nokunciphisa izibopho ze-disulfide kumaprotheni. Uhlobo olusha lwesengezo esiluhlaza ludlala indima ebalulekile ekuthuthukiseni ukusebenza kwebhethri.
I-Dithiothreitol (DTT) iyi-ejenti yokunciphisa enamandla, futhi ukuncishiswa kwayo kubangelwa kakhulu ukuzinza kwendandatho enamalungu ayisithupha (equkethe izibopho ze-disulfide) esimweni sayo sokuxiliswa. Ukuncipha kwesibopho esivamile se-disulfide yi-dithiothreitol kuqukethe ukusabela okubili okulandelanayo kwesibopho se-sulfhydryl-disulfide. Amandla okunciphisa e-dithiothreitol (DTT) athintwa yinani le-pH, futhi angadlala kuphela umphumela wokunciphisa lapho inani le-pH lingaphezu kuka-7. Lokhu kungenxa yokuthi ama-anion e-thiolate ancishisiwe kuphela asabelayo, kuyilapho ama-mercaptan engenawo, futhi i-pKa yamaqembu e-mercapto ngokuvamile ingu-8.3.
I-Dithiothreitol (DTT) ivame ukusetshenziswa ukunciphisa izibopho ze-disulfide zama-molecule amaprotheni nama-polypeptide. Ivame ukusetshenziswa njenge-protective agent ye-protein sulfhydryl futhi isetshenziswa emalungiselelweni okugoma ukuvimbela izinsalela ze-protein cysteine ekwakheni i-intramolecular kanye ne-intermolecular disulfides. Inqubo yokuthola i-nucleic acid, i-dithiothreitol (DTT) ingabhubhisa izibopho ze-disulfide ku-RNase protein, iguqule i-RNase, futhi ikhuthaze ukuqhutshwa kokuhlolwa okufana nokwakhiwa komtapo wezincwadi we-RNA kanye nokwandiswa kwe-RNA. I-Dithiothreitol (DTT) isetshenziswa futhi njenge-antidote ukuvikela amaseli nezicubu, njenge-radioprotective, njll.
Kodwa-ke, i-dithiothreitol (DTT) ivame ukungakwazi ukunciphisa izibopho ze-disulfide ezifakwe esakhiweni seprotheyini (i-solvent ayifinyeleleki). Ukunciphisa izibopho ze-disulfide ezinjalo kuvame ukudinga ukuguquka kweprotheyini kuqala.
Ukuze uvimbele umphumela wokuhamba kwamabhethri e-lithium-sulfur futhi uthuthukise ukusebenza kwe-electrochemical kwamabhethri e-lithium-sulfur, zama ukusebenzisa i-dithiothreitol (DTT) njenge-ejenti yokugunda ukuze uchebe ama-polysulfide aphezulu ukuze uwavimbele ekuncibilikeni. I-Threitol (DTT) ixutshwe ephepheni lama-nanotubes e-carbon amaningi (MWCNTs) ukuze kulungiselelwe i-interlayer ye-DTT. I-interlayer ye-DTT ibekwe phakathi kweshidi le-electrode elihle kanye ne-separator yenkinobho ye-lithium-sulfur isigamu-seli, kanye nobuningi bomphezulu weshidi le-electrode elihle Cishe u-2mg/cm2. Imiphumela yokubuka kwe-SEM iqinisekisa ukuthi i-DTT ihlakazeke ngokulinganayo ebusweni kanye nasezimbotsheni zephepha le-MWCNTs. Imiphumela yokuhlolwa kwe-electrochemical ikhombisa ukuthi ibhethri le-lithium-sulfur elinesakhiwo sesandwich se-DTT linomthamo othize wokukhipha wokuqala ongu-1288 mAh/g ngesilinganiso esingu-0.05C. Okokuqala ngqa, ukusebenza kahle kwe-coulombic kusondele ku-100%, futhi umthamo othize ngesikhathi sokushaja nokukhipha kumazinga angu-0.5C, 2C, kanye no-4C ufinyelela ku-650mAh/g, 600mAh/g, kanye no-410mAh/g, ngokulandelana. Ukwethulwa kwesakhiwo sesandwich se-DTT kungasusa ngempumelelo ama-polysulfide aphezulu. Kuyivimbela ekuthutheleni ku-electrode ye-lithium negative, ngaleyo ndlela kuvimbele umphumela we-shuttle futhi kuthuthukise ukuzinza komjikelezo kanye nokusebenza kahle kwe-coulomb kwamabhethri e-lithium-sulfur.
Kuyaphawuleka ukuthi i-dithiothreitol (DTT) iyisithako esinobuthi. Isibonelo, uma kukhona izinsimbi ezishintshayo, i-dithiothreitol (DTT) ingabangela umonakalo we-oxidative kuma-molecule ezinto eziphilayo. Ngesikhathi esifanayo, i-dithiothreitol (DTT) ) Ingathuthukisa ubuthi bamanye ama-compounds aqukethe i-arsenic ne-mercury. I-Dithiothreitol (DTT) inephunga elimnandi, elingaba yingozi empilweni ngenxa yokuphefumula kanye nokuxhumana kwesikhumba. Ngakho-ke, kubalulekile ukuyivikela ngesikhathi sokusebenza, ukugqoka imaski, amagilavu nezibuko, nokusebenza endaweni yokushisa.
I-Thithreitol (DTT) njenge-ejenti yokugunda kumabhethri e-lithium-sulfur
Ibhethri le-lithium-sulfur libhekwa njengohlelo lwebhethri olunamandla amakhulu ngenxa yokuminyana kwalo kwamandla aphezulu kanye nokuvikelwa kwemvelo. Kodwa-ke, "umphumela we-shuttle" we-polysulfides uholela empilweni yomjikelezo engemihle kanye nokuzikhipha okukhulu, okuvimbela ukusetshenziswa kwalo.
I-Thiothreitol (DTT) ingafakwa ebhethrini njenge-ejenti yokugunda. Ingaqeda ngokushesha izibopho ze-disulfide ekushiseni kwegumbi, iqede ama-polysulfide aphezulu ukuze ivimbele ukuqhekeka kwawo, ivimbele umphumela we-shuttle, futhi yandise ukusebenza kwe-lithium electrochemical kwamabhethri esibabule.
I-Dithiothreitol (DTT) njengesithasiselo se-electrolyte kumabhethri e-alkaline aluminium/air
Kumabhethri e-alkaline aluminium/air, i-dithiothreitol ingakha ungqimba oluvikelayo olufanayo noluzinzile ngokusebenzisa izibopho eziguquguqukayo ebusweni be-aluminium anode, ivimbele ukuzigqwala kwe-aluminium anode, futhi ithuthukise ukusebenza kwayo ngempumelelo.
Isikhathi sokuthunyelwe: Disemba 31-2021