Electrochemical Determination of the Energy Level of Organic/Polymeric Materials

Abstract

Abstract: We focus on the study of energy level structure of organic systems(taking AlQ₃ for example) using two newly developed electrochemical methods(derivative voltammetry and coulomb-potential spectroscopy), and devote our attention to comparing the accuracy of these new methods with conventional methods. The experimental values of the HOMOand the LUMOpositions of AlQ₃ and PVKare in good agreement with the results determined by the photoemission analysis. The experimental band gap values for AlQ₃ and PVKobtained via two new methods are also in excellent agreement with the band gap values deduced by the optical absorption spectroscopy. The resulting organic/polymeric electroluminescent devices based on matching energy level of organic/polymeric system exhibit a high luminescent efficiency.

Key words: Electrochemical method, Energy band structrue, Band gap, Energy level of E_LUMO and E_HOMO

CLC Number:

O631.6

TrendMD:

SONG Wen-Bo, CHEN Xu, WU Fang, TIAN Wen-Jing, MA Yu-Guang, XU Hong-Ding . Electrochemical Determination of the Energy Level of Organic/Polymeric Materials[J]. Chem. J. Chinese Universities, 2000, 21(9): 1422.

[1]	ZHAO Zu, LI Rui, ZHANG Xiaochao, ZHANG Changming, LIU Jianxin, WANG Yawen, WANG Yunfang, FAN Caimei. Electrochemical In-situ Synthesis and Photocatalytic Properties of BiF₃ Thin Films^† [J]. Chem. J. Chinese Universities, 2018, 39(8): 1775.
[2]	WANG Hui, PEI Yanbo, HU Shaozheng, MA Wentao, SHI Shuoyu. Synthesis and “Two Channel Pathway” Photocatalytic H₂O₂ Production Ability of Band Gap Tunable K⁺ Doped Graphitic Carbon Nitride^† [J]. Chem. J. Chinese Universities, 2018, 39(7): 1503.
[3]	ZHANG Xuena, ZHONG Xinwen, ZHONG Yan, LU Haiyan. Optimization of Conditions of the Electrochemical Detection of Methamphetamine^† [J]. Chem. J. Chinese Universities, 2016, 37(10): 1799.
[4]	LIU Xiaolin, WANG Lude, HUANG Zaiyin, LIU Zuojiao, LI Xingxing. Thermodynamic Functions of Nano Zinc Oxide Acquired by Microcalorimetry and Electrochemical Methods^† [J]. Chem. J. Chinese Universities, 2015, 36(3): 539.
[5]	TAN Shuzhen, MA Haixia, LIU Wei, ZHAO Hongchi, WU Yonggang, BA Xinwu. Synthesis and Characterization of Conjugated Polymers Containing Bifluorenylidenes Units^† [J]. Chem. J. Chinese Universities, 2014, 35(6): 1355.
[6]	LIN Songzhu, CHEN Huanhuan, LI Yihua, JIA Ruokun. Electrochemical Preparation of Magnetic Fe₃O₄ Nanocrystalline and Its Online Coagulation Properties^† [J]. Chem. J. Chinese Universities, 2014, 35(12): 2529.
[7]	CHEN Jun-Bo, HUANG He, ZHANG Gang. Fabrication and PBG Modification of Gradient Colloidal Photonic Crystal [J]. Chem. J. Chinese Universities, 2012, 33(12): 2771.
[8]	ZHU Long-Xiu, LI Ying-Zhi, ZHAO Xin, ZHANG Qing-Hua. Preparation and Conductive Behavior of Graphene by Electrochemical Method [J]. Chem. J. Chinese Universities, 2012, 33(08): 1804.
[9]	DUAN Yu-Ai, GENG Yun, LI Hai-Bin, YANG Guo-Chun, WU Shui-Xing, HAO Li-Zhu, LIAO Yi, SU Zhong-Min. Theoretical Study on Electronic Structure and Photophysical Properties of Low Band Gap Dithiophene Copolymer with Different Bridging Atoms [J]. Chem. J. Chinese Universities, 2011, 32(4): 920.
[10]	GU Wei¹, CUI Yan¹, LIU Guo-Kun², GU Ren-Ao¹, REN Bin², TIAN Zhong-Qun². Surface-enhanced Raman Spectroscopic Activity on Bare Nickel Electrode Roughened by Electrochemical Method [J]. Chem. J. Chinese Universities, 2006, 27(11): 2132.
[11]	GAO Chao, WU Hong-Cai, YI Wen-Hui, SUN Jian-Ping, MENG Ling-Jie . Effects of Substituents on the Third Order Nonlinear Optical Properties of Poly[(3-alkylthiophene-2,5-diyl)-(benzylidenequinomethene-2,5-diyl)] Derivatives [J]. Chem. J. Chinese Universities, 2005, 26(5): 973.
[12]	WANG Jing, HU Jin-Bo, SHANG Jun, LI Qi-Long . Interaction Between Daunorubicin and DNA at Co Ion Implanted Modified Glass Carbon Electrode [J]. Chem. J. Chinese Universities, 2004, 25(9): 1689.
[13]	GAO Chao, WU Hong-Cai, YI Wen-Hui, LI Bao-Ming, SUN Jian-Ping . Synthesis and Characterization of Narrow Bandgap Conjugated Polymer: Poly[(3-alkylthiophene-2,5-diyl)][(p-substituted) benzylidenequinomethane-2,5-diyl]s [J]. Chem. J. Chinese Universities, 2004, 25(9): 1747.
[14]	LI Qing-Wen, GAO Hong, HUANG Hao, WANG Yi-Ming, FENG Jun, LUO Guo-An . Electrochemical Characterization on the Interaction Between Hemoglobin and NO Molecule [J]. Chem. J. Chinese Universities, 2001, 22(8): 1373.
[15]	ZOU Ming-zhu, SHENG Gui-hua, ZHENG Yan-sheng . Application of Reflectance Thin-layer Spectroelectrochemical Method [J]. Chem. J. Chinese Universities, 1992, 13(6): 741.

Electrochemical Determination of the Energy Level of Organic/Polymeric Materials

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments