Dissertation > Mathematical sciences and chemical > Physics > Molecular physics, atomic physics > Molecular Physics > Molecular spectroscopy

Study of the Microenvironment Effects on TCNQ with Spectrum Technology

Author LiuZhuo
Tutor LiZuoWei
School Jilin University
Course Optics
Keywords TCNQ Solvent effect Spectroelectrochemical Electrochromic
CLC O561.3
Type Master's thesis
Year 2008
Downloads 47
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7,7,8,8 - tetracyanoborate on the the quinone methane (TCNQ) with a variety of different metals or compounds to form a variety of complex film with good optical and electrical properties , and has a lot of potential , and therefore has been much attention. Most of TCNQ related research in a variety of solution or outfield , the paper focuses on these microenvironmental changes of TCNQ made ??a systematic study . The use of infrared spectroscopy to study the impact of different solvents on the TCNQ in the vibration frequency of the cyano . Found that with the increasing number of solvent receptor the cyano vibration frequency decreases , and the use of donor - acceptor model LSER relationship explained this phenomenon ; using UV-visible spectroscopy studies TCNQ solvatochromic effect . Found that with increasing solvent polarity π → π * transition energy difference increases, the absorption band blue shift ; laboratory- developed UV / Raman dual-use spectroelectrochemical thin layer pool as the carrier , the use of UV-visible spectra of electrochemical techniques to study the impact of the applied electric field TCNQ . We found that the DMF solution of TCNQ energized after a certain time to change from deep green to orange, has obvious electrically photochromic properties . We believe that TCNQ under an electric field gradually converted to TCNQ- with TCNQ 2 - , while TCNQ 2 - DCTC - oxidation in the presence of oxygen under the conditions of this series of reactions lead corresponding to a continuous change of the absorption band in the ultraviolet spectrum .

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