摘要
通过金刚石对顶砧(DAC)高压装置产生高压,利用原位高压同步辐射能量色散X射线衍射(EDXD)和同步辐射远红外光谱研究了压力对DPP-11[2,5-二-(11-十一醇基)-3,6-二-(2-噻吩基)-1,4-二酮吡咯并[3,4-c]吡咯]固体及其在水溶液中胶束体系的影响.实验结果表明,在准静水压条件下,DPP-11固体没有发生相变,但随着压力的增加,分子间的π-π相互作用明显增强.在DPP-11胶束中发现了DPP-11固体中新的远红外吸收峰,此峰随着压力的增加而蓝移,这是由于胶束中π共轭染料基团的π-π相互作用增强所致.
In-situ synchrotron X-ray diffraction and far-IR spectra of DPP-11{2,5-bis[ 11-(1-pyridinium) alkyl]-3,6-bis(2-thienyl)-1,4-dioxopyrrolo[ 3,4-c ] pyrrole ditosylate salts t and its micelles in aqueous solution were studied. Although X-ray studies show no indication of phase transition, however, the π-π interactions become stronger with increasing pressure which can be deduced from far-IR spectra. A new far-IR absorption peak is found to be related to the π-conjugated aromatic dyes in DPP-11 micelles. Upon increasing pressure, the peak shifted toward higher wavenumber region due to the stronger π-π interactions.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2008年第6期1181-1184,共4页
Chemical Journal of Chinese Universities
基金
国家自然科学基金(批准号:20673048
20773043)
新世纪优秀人才支持计划(批准号:NCET-06-0313)
长江学者和创新团队发展计划(批准号:IRT0625)
国家基础研究项目(批准号:2005CB724400)资助