CAJ | 학술논문

采用直接沉淀法制备了层状框架酌-磷酸锆(酌-ZrP)及改性磷酸锆(酌-DDZrP)，通过插层化学法将吡嗪-2-羧酸生色团与改性磷酸锆进行杂化组装。 X射线衍射结果显示，酌-DDZrP的层间距(3.70 nm)远远大于酌-ZrP(1.11 nm)，这有利于吡嗪-2-羧酸生色团的插入。组装后层状框架的层间距由3.70 nm减小为3.33~3.29 nm。荧光光谱表明，最大发射峰位置发生了明显蓝移，由溶液中的373 nm蓝移至悬浮液的366 nm。研究发现，吡嗪-2-羧酸在水溶液中的荧光强度很低，但形成插层组装后，悬浮液的荧光强度有了很大程度的提高，当浓度为15滋mol/L时，荧光强度增大了6倍。这说明酌-DDZrP能够改善吡嗪-2-羧酸的荧光性能，有利于其在分子识别和荧光探针等领域的应用。
채용직접침정법제비료층상광가작-린산고(작-ZrP)급개성린산고(작-DDZrP)，통과삽층화학법장필진-2-최산생색단여개성린산고진행잡화조장。 X사선연사결과현시，작-DDZrP적층간거(3.70 nm)원원대우작-ZrP(1.11 nm)，저유리우필진-2-최산생색단적삽입。조장후층상광가적층간거유3.70 nm감소위3.33~3.29 nm。형광광보표명，최대발사봉위치발생료명현람이，유용액중적373 nm람이지현부액적366 nm。연구발현，필진-2-최산재수용액중적형광강도흔저，단형성삽층조장후，현부액적형광강도유료흔대정도적제고，당농도위15자mol/L시，형광강도증대료6배。저설명작-DDZrP능구개선필진-2-최산적형광성능，유리우기재분자식별화형광탐침등영역적응용。
γ-zirconium phosphate(γ-ZrP) and a modified zirconium phosphate (γ-DDZrP) were pre-pared by direct precipitation method. Then, the chromophore pyrazinecarboxylic acid as guest mole-cules was intercalated into the modified zirconium phosphate. The changes of their layer spacing and spectroscopic properties were studied in detail. The results of X-ray-diffraction demonstrate that the interlayer spacing is reduced to 3. 29 nm from 3. 70 nm after intercalation. The fluorescence spectra show that the emission peak is blue shifted from 373 nm in aqueous solution to 366 nm in suspen-sion. Furthermore, the fluorescence property of pyrazinecarboxylic acid assembled into lamellar framework is dramatically improved as compared to the chromophores in aqueous solution. As the chromophore concentration is 15 μmol/L, the fluorescence intensity is enhaced 6-fold. It is conclu-ded that γ-DDZrP provides a special microenvironment which can improve the optical properties of chromophores.