資源描述:
《縮氨基硫脲受體的合成及陰離子識別規(guī)律研究.pdf》由會員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫。
1、第22卷第8期化學(xué)研究與應(yīng)用Vo1.22.No.82010年8月ChemicalResearchandApplicationAug.,2010文章編號:1004.1656(2010)08.1027-05縮氨基硫脲受體的合成及陰離子識別規(guī)律研究徐維霞,馬占營,范廣,鄧玲娟,張有明,魏太保(1.咸陽師范學(xué)院化學(xué)與化工學(xué)院,陜西咸陽712000;2.西北師范大學(xué)化學(xué)化工學(xué)院甘肅省高分子材料重點(diǎn)實(shí)驗(yàn)室,甘肅蘭州730070)摘要:設(shè)計(jì)合成了新型縮氨基硫脲受體分子,利用紫外一可見吸收光譜考察了其對F‘,C1‘,Br
2、’,I,CH,COO‘,HSO,H2PO一和NO38種陰離子的識別作用。當(dāng)加入F。,CH,COO。,H2PO’時(shí),溶液顏色立刻由無色轉(zhuǎn)變?yōu)辄S色,而加入其它陰離子則無變化,從而實(shí)現(xiàn)對這3種陰離子的裸眼檢測。通過計(jì)算可知,兩種受體分子對CHCOO。和H:PO‘的識別作用呈現(xiàn)出有規(guī)律的變化,即對同種陰離子:受體B<受體B2,且主客體間形成1:1的配合物。質(zhì)子溶劑效應(yīng)實(shí)驗(yàn)證明了受體分子與陰離子之間以氫鍵作用方式相結(jié)合。關(guān)鍵詞:縮氨基硫脲;合成;陰離子識別;氫鍵作用中圖分類號:O621.36文獻(xiàn)標(biāo)識碼:ASynth
3、esisofthiosemicarbazonereceptorsandtheiranionrecognitionorderlinessXUWei—xia。,MAZhanying,F(xiàn)ANGuang,DENGLing-juan,ZHANGYou—ruing,WEITai.bao(1.CollegeofChemistryandChemicalEngineering,XianyangNormalUniversity,Xianyang712000,China;2.CollegeofChemistryandChemi
4、calEngineering,GansuKeyLaboratoryofPolymerMaterials,NorthwestNormalUniversity,Lanzhou730070,China)Abstract:Twonewthiosemiearbazonederivativereceptorsweredesignedandsynthesized.Thebindingprope~iesofthereceptorswithanionssuchasF‘,CI‘,Br’,I‘,CH3CO0‘,HSO4’,H2
5、P04andNO3一inDMSOwereinvestigatedbyUV-Visspectroscopy.AclearcolorchangewasobservedfromcolorlesstoyellowuponadditionofF’,CH3COO。orH2po4-tothesolutionofthetworeceptorsinDMSObythenaked—eyes.TheresultsshowedthatthetworeceptorshadabetterselectivityforF一,CH3CO0一
6、andH2PO4’,buthadnoevidentbindingwithCl。,Br。,I一,HSO4‘,andNO3‘.Theresultsshowedthatthebindingabilityofthetworeceptorschangedregu-ladywithCH3COO—andH2PO4一.Forthesameanion,theassociationconstantsfollowedthetrend:receptorB17、ta1:1stoichiometrycomplexwasformedbetweenreceptorsandthethreeanions.Theexperimentusingproticsolventprovidedevidenceforthehydrogen—bondinteractionbetweenthereceptorsandanions.Keywords:thiosemicarbazone;synthesis;anionrecognition;hydrogen-bondinteraction收稿日
8、期:2010-12-29;修回日期:2010-04—21基金項(xiàng)目:陜西省自然科學(xué)基金(2009JQ2015)資助項(xiàng)目;陜西省教育廳專項(xiàng)壯金(09JK798)資助項(xiàng)目;咸陽師范學(xué)院科研專項(xiàng)基金(06XSYK260)資助項(xiàng)目聯(lián)系人簡介:徐維霞(1978.),女,講師,研究方向:超分子化學(xué)。Email:xuweixia622@126.corn1028化學(xué)研究與應(yīng)用第22卷分子識別是主體對客體選擇性結(jié)合并產(chǎn)生某了有意義的途徑,有望發(fā)展