Synthesis hamwe na luminous biranga amazi -kubura selulose ether / EU (III)

Amazi ya sintetike -suble selulose ether / EU (III) hamwe nibikorwa byiza, aribyo, carboxymethyl selulose (CMC) / EU (III), methyl selulose (MC) / EU (III), na Hydroxyeyl selulose (HEC) / EU (III) kuganira ku miterere yibi bigo kandi byemezwa na FTIR. Ikirangantego cyo gutangiza ibyo bintu bihuye ni EU (III) kuri 615nm. Inzibacyuho yamashanyarazi (kuri 5D0→7F2). Isimburwa rya CMC rigira ingaruka kuri fluorescent spécran n'imbaraga za CMC / EU (III). Ibigize EU (III) nabyo bigira ingaruka kumbaraga za fluorescent yikigo. Iyo ibihugu byUburayi (III) bingana na 5% (igipimo rusange), imbaraga za fluorescent ziyi mazi -suble selulose ether EU (III) ihuye ntarengwa.

Ijambo ryibanze: amazi -suble selulose ether; Eu (III); bihuye; kumurika

1.Intangiriro

Cellulose ni umurongo wa macrometero yaβ-D glucose igizwe na alcool (1,4). Kuberako ishobora kuvugururwa, ibinyabuzima bishobora kwangirika, biocompatibilité, ubushakashatsi bwa selile burimo kwiyongera Urebye cyane. Cellulose ikoreshwa kandi nk'uruvange rw'imikorere ya optique, amashanyarazi, magnetiki, na catalitiki nk'itsinda ryinshi rya alkyr ogisijeni ligand. Y.OKAMOTO nabafatanyabikorwa bize ibizamini byo gutegura hamwe nibisabwa birimo ibyuma bidasanzwe bya ion polymers. Babonye ko computer ihuye na CMC / TB ifite florescent ikomeye. CMC, MC, na HEC, nkibyingenzi kandi bikoreshwa cyane mumazi ya selile -suble selile, byitabiriwe cyane bitewe nuburyo bwiza bwo gukemura no guha agaciro gakomeye, cyane cyane tekinoroji ya label ya fluorescent Imiterere ya selile mubisubizo byamazi ni byinshi ingirakamaro.

Iyi ngingo ivuga urukurikirane rw'amazi -suble selulose ether, aribyo gutegura, imiterere n'imiterere ya fluorescente byakozwe na matomoide yashizweho na CMC, MC na HEC na EU (III).

2. Ubushakashatsi

2.1 Ibikoresho by'igerageza

CMC (impamyabumenyi yo gusimbuza (DS) ni 0,67, 0.89, 1.2, 2.4) kandi HEC itangwa neza na KIMA CHEMICAL CO., LTD.

MC (DP = 450, ubukonje 350 ~ 550mpa·s) yakozwe na KIMA CHEMICAL CO., LTD. Eu2O3 (AR) yakozwe na Shanghai Yuelong Uruganda rukora imiti.

2.2 Gutegura ibigo bya CMC (HEC, MC) / Eu (III)

EuCl3·6H2O igisubizo (igisubizo A): gushonga Eu2Os muri 1: 1 (igipimo cyijwi) HCI hanyuma ukayungurura kuri 4. 94X 10-2 mol / L.

CMC / Eu (III) igoye ya sisitemu ikomeye ya leta: Gabanya 0.0853g ya CMC hamwe na DS zitandukanye mumazi, hanyuma ongeramo Eu (III) itonyanga kumanuka kubisubizo byamazi yayo, kuburyo igipimo rusange cya CMC: Eu (III) ari 19: .

Sisitemu yo gukemura amazi ya CMC (HEC, MC / Eu (III): Fata 0,0853 g ya sample ya CMC (cyangwa HEC cyangwa MC)) hanyuma uyishongeshe muri H2O, hanyuma wongereho ibisubizo bitandukanye A (kugirango utegure Eu (III) itandukanye) ).

2.3 Fluorescence yerekanwe ya CMC (HEC, MC) / Eu (III)

Sisitemu zose zamazi zapimwe zapimwe hamwe na RF-540 fluorescence spectrophotometero (Shimadzu, Ubuyapani). Sisitemu ya CMC / Eu (III) yapimwe na Hitachi MPE-4 fluorescence spectrometer.

2.4 Fourier ihindura infrarafurike ya sprosroscopi ya CMC (HEC, MC) / Eu (III)

FTIR IR yikigo yakomejwe hamwe na Aralect RFX-65AFTIR hanyuma ikanda mubisate bya KBr.

3. Ibisubizo n'ibiganiro

3.1 Imiterere n'imiterere ya CMC (HEC, MC) / Eu (III)

Bitewe n'imikoranire ya electrostatike, CMC iringaniye mugisubizo cyamazi cyoroshye, kandi intera iri hagati yiminyururu ya CMC iri kure cyane, kandi imbaraga zombi zirakomeye. Iyo Eu (III) yongewemo buhoro buhoro mugisubizo, iminyururu ya CMC ya molekulari mugisubizo Imiterere ihuza byose irahinduka, impuzandengo ya electrostatike yumuti wambere irasenywa, kandi urunigi rwa CMC rukunda gutemba. Iyo Eu (III) ihujwe nitsinda rya carboxyl muri CMC, imyanya yo guhuza ntisanzwe (1:16), Kubwibyo, mugisubizo cyamazi cyamazi, Eu (III) na CMC bahujwe kubwamahirwe nitsinda rya carboxyl mumurongo, kandi uku guhuza bidasanzwe hagati ya Eu (III) na CMC iminyururu ya molekile ntabwo ari byiza kubisohoka bya fluorescence ikomeye, kuko Bituma igice cya chiral kibura. Iyo igisubizo gishyushye, urujya n'uruza rw'iminyururu ya CMC rwihuta, kandi intera iri hagati y'iminyururu ya CMC iba ngufi. Muri iki gihe, guhuza Eu (III) nitsinda rya carboxyl hagati yiminyururu ya CMC biroroshye kubaho.

Uku guhuza byemejwe muri CMC / Eu (III) FTIR. Ugereranije umurongo (e) na (f), impinga ya 1631cm-1 kumurongo (f) igabanuka muri (e), naho impinga ebyiri nshya 1409 na 1565cm-1 zigaragara kumurongo (e), arizo COO - Base vs na vas, ni ukuvuga, CMC / Eu (III) ni umunyu, kandi CMC na Eu (III) bihujwe ahanini nububiko bwa ionic. Mu murongo (f), impinga ya 1112cm-1 yakozwe no kwinjiza imiterere ya alifatique ether hamwe nimpinga nini yo kwinjirira kuri 1056cm-1 iterwa nuburyo bwa acetal na hydroxyl iragabanuka kubera imiterere yibintu, kandi impinga nziza ziragaragara . Electron yonyine ya electron ya O atom muri C3-O hamwe na electroni yonyine ya O atom muri ether ntabwo bitabiriye guhuza.

Ugereranije umurongo (a) na (b), urashobora kubona ko imirongo ya MC muri MC / Eu (III), yaba ogisijeni mumatsinda ya metoxyl cyangwa ogisijeni mumpeta ya glucose ya anhidrous, ihinduka, yerekana ko muri MC Okisijene zose zigira uruhare muguhuza na Eu (III).

3.2 Fluorescence yerekanwe ya CMC (HEC, MC) / Eu (III) hamwe nibintu byabigizemo uruhare

3.2.1 Fluorescence yerekanwe ya CMC (HEC, MC) / Eu (III)

Kubera ko molekile zamazi zifite imbaraga zo kuzimya fluorescence, ubukana bwimyuka ya ioni ya lanthanide ion iba ifite intege nke. Iyo Eu (III) ion ihujwe na ether ya selile yamashanyarazi ya ether, cyane cyane hamwe na molekile ya polyelectrolyte CMC, igice cyangwa molekile zose zamazi zahujwe zirashobora kuvanwaho, kandi ubukana bwuka bwa Eu (III) buzamurwa nkigisubizo. Ibyuka bihumanya byibi bigo byose birimo 5D0→7F2 amashanyarazi ya dipole ya Eu (III) ion, itanga impinga kuri 618nm.

3.2.2 Ibintu bigira ingaruka kumiterere ya fluorescence ya CMC (HEC, MC) / Eu (III)

Imiterere ya selile ya selile igira ingaruka kuri fluorescence ubukana, kurugero, ibigo CMC / Eu (III) byakozwe na DS zitandukanye bifite imiterere itandukanye ya fluorescence. Iyo DS ya CMC itari 0.89, spekure ya fluorescence yikigo cya CMC / Eu (III) ifite impinga kuri 618nm gusa, ariko iyo DS ya CMC ari 0.89, murwego rwubushakashatsi bwacu, CMC / Eu ( III) III) Hariho impinga ebyiri zidafite imyuka ihumanya ikirere, ni inzibacyuho ya magneti dipole 5D0→7F1 (583nm) hamwe ninzibacyuho yamashanyarazi 5D0→7F3 (652nm). Mubyongeyeho, ubukana bwa fluorescence yibi bigo nabwo buratandukanye. Muri iyi nyandiko, ubukana bw’ibyuka bya Eu (III) kuri 615nm byateguwe kurwanya DS ya CMC. Iyo DS ya CMC = 0.89, ubukana bwurumuri rwa leta-CMC / Eu (III) igera kuri byinshi. Nyamara, viscosity (DV) ya CMC nta ngaruka igira ku gukomera kwa fluorescence yibigo biri murwego rwubu bushakashatsi.

4 Umwanzuro

Ibisubizo byavuzwe haruguru byemeza neza ko ibigo byamazi ya elegitoronike ya selile / Eu (III) bifite imyuka yoherezwa na fluorescence. Imyuka yangiza yibi bigo irimo amashanyarazi ya dipole ya Eu (III), naho impinga ya 615nm iterwa na Produced na 5D0→Inzibacyuho 7F2, imiterere ya selile ether n'ibiri muri Eu (III) birashobora kugira ingaruka kuri fluorescence.