林仲华
电极过程动力学和电化学研究方法,谱学电化学和界面电化学,导电聚合物电化学,半导体电化学和光电化学,纳米电化学,生物大分子电化学
个性化签名
- 姓名:林仲华
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学术头衔:
博士生导师
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学科领域:
物理化学
- 研究兴趣:电极过程动力学和电化学研究方法,谱学电化学和界面电化学,导电聚合物电化学,半导体电化学和光电化学,纳米电化学,生物大分子电化学
林仲华,1965年厦门大学化学系物理化学专业毕业,1968年厦门大学化学系物理化学专业电化学方向研究生毕业,1981年在美国Case Western Reserve University电化学科学中心当访问学者。1990年起任厦门大学化学系、固体表面物理化学国家重点实验室和物理化学研究所教授,1993年起任博士生导师。从事电化学及电化学相关学科的教学和科学研究,研究领域主要包括:电极过程动力学和电化学研究方法,谱学电化学和界面电化学,导电聚合物电化学,半导体电化学和光电化学,纳米电化学,生物大分子电化学。目前主要开展纳米电化学,生物大分子电化学和光电化学的研究。
发表著作:主编著《电化学中的光学方法》(1990),合著《电化学研究方法》(1984),参加编著《电化实验方法进展》(1988)、《中国大百科全书—化学》(1989)、《中国基础研究百例》(1990)、《物理化学—自然科学学科发展战略调研报告》(1994)、《当代化学前沿》(1997)、《Conducting Polymers and Polymer Electrolytes from Biology to Photovoltaics》(2002)、《电化学》(2004)、《固体表面物理化学若干研究前沿》(2006)。在期刊上发表科学论文110余篇。
曾主持或正在主持国家自然科学基金八五重点项目子课题、九五重点项目、十五重点项目子课题,5项自由项目;教育部重点科技项目(1项)、博士点基金(2项)。
曾获国家自然科学奖三等奖,国家教委科技进步奖一、二等奖,光华科学基金奖三等奖等奖励。享受政府特殊津贴,被授予福建省优秀专家和国家有突出贡献中青年专家。曾担任福建省化学会副理事长、理事长,国家自然科学基金学科评议组成员。
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2051
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260
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成果数
11
林仲华, Lingling Wu; Jianzhang Zhou; Jin Luo; Zhonghua Lin
L. Wu et al. Electrochimica Acta 45 (2000) 2923-2927,-0001,():
-1年11月30日
It shows that calf thymus DNA(CT DNA) can be adsorbed at a highly ordered pyrolytic graphite (HOPG) electrode and detected by differential pulse voltammetry (DPV) and electrochemical atomic force microscopy (ECAFM). It is found that controlled potential pre-polarization influences largely the adsorption of dsDNA while it has little influence on ssDNA. It is demonstrated that ECAFM is useful to exploit adsorption of DNA at HOPGE. The mode of adsorption of DNA at the HOPG electrode that fits best with the experimental data is proposed.
DNA, HOPG, Pre-polarization, Oxidation, ECAFM
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林仲华, L. Q. Dong, J. Z. Zhou, L. L. Wu, P. Dong, Z. H. Lin
L. Q. Dong et al. Chemical Physics Letters 354 (2002) 458-465,-0001,():
-1年11月30日
The electrochemical ex situ SERS spectra indicate that under atmosphere,the conformation of most of helices on gold substrate is B-form,but A-form conformation also exists. The band intensities of the in situ SERS spectra of oligonucleotide probes and their hybridized helices decrease substantially when the potentials are made more positive, especially for two ring vibration modes of the out-of-plane contribution of adenine,which indicates that conversion of the vertical adsorption orientation to flattened adsorption orientation occurs when the potential is changed from negative to more positive potentials according to SERS ‘surface selection rules’. _ 2002 Elsevier Science B.V. All rights reserved.
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林仲华, L. L. Wu; H. G. Huang, J. X. Li; J. Luo; Z. H. Lin
L. L. Wu et al. Electrochimica Acta 45 (2000) 2877-2881,-0001,():
-1年11月30日
The present work used mainly electrochemical in situ time-resolved UV-vis subtractive reflectance spectroscopy to study the electron transfer process of cytochrome c in the presence of promoter (the equal molar mixture of guanine and cytosine). Two new absorption bands 450 and 500 nm and two bipolar bands 250 and 300 nm are observed in the spectra with different time resolutions. In addition, the intensity of another band 420 nm changes with the time resolutions. All the results show that the electron transfer of cytochrome c is accompanied by significant conformational rearrangement.
Cytochrome c, Conformational rearrangement, Electron transfer, In situ time-resolved UV-vis subtractive reflectance Spectroscopy
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林仲华, LingLing Wu; Jin Luo; ZhongHua Lin
Ling-Ling Wu et al. Journal of Electroanalytical Chemistry 417 (1996) 53-58,-0001,():
-1年11月30日
The redox process of poly-o-phenylenediamine (PoPD) film in strong acid solution has been studied by in situ resonance Raman spectroscopy, in situ UV-vis subtractive reflectance spectroscopy and cyclic voltammetry. A marked potential-dependent spectral change is observed in the in situ resonance Raman spectra, which reveals that at least three redox states of PoPD are formed in the redox process and the structure of PoPD is dominated by a ladder polymer with phenazine rings. The three kinds of PoPD display different resonance Raman enhancement effects, which is verified by the in situ UV-vis subtractive reflectance spectra. The ex situ resonance Raman spectra indicate that the electronic structure of the PoPD molecule is evidently influenced by protonation and that the most stable state of PoPD is its semi-oxidized state. Finally, a possible reaction scheme of the electrochromic process of PoPD film in strong acid solution is proposed.
In situ resonance Raman spectroscopy, Poly-o-phenylenediamine, Redox states of PoPD,, Electronic structure, Protonation
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林仲华
L. -L. Wu et al. Journal of Electroanalytical Chemistry 440 (1997( 173-182,-0001,():
-1年11月30日
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【期刊论文】Internal photoemission in polyaniline revealed by p, otoelectrochemistry
林仲华, H. G. Huang, Z. X. Zheng, J. Luo, H.E Zhang, L. L. Wu, Z. H. Lin
H. G. Huang et al. Synthetic Metals 123 (2001) 321-325,-0001,():
-1年11月30日
After self-assembling a p-aminothiophenol (PATP) monolayer on bare Au electrode, polyaniline (PANI) films were prepared by electropolymerization on the modified Au electrode and three forms of PANI (the emeraldine salt, the leucoemeraldine and the pernigraniline) were obtained by electrochemical, method, The cyclic voltammograms of the probe (K3Fe(CN)6/K4Fe(CN)6) for the three forms of PANI show that three different oxidized forms can be found, and all of them are stable under our experiment conditions. The potential dependence of magnitude and the spectra of the photocurrent of the PANI films were observed. When the spectra of photocurrent are displayed in a Fowler plot (the squareroot of the incident photon-to-current efficiencies versus the photon energy), the functional form appears linear, which is interpreted as indication of internal photoemission of holes or electrons from metal into the appropriate electronic band of the semiconductor or insulator. The band gap energy of insulating matrix in. the emeraldine salt is determined as 3.33 eV by the Fowler plots, The fiat-band potential., in the order of 0.63 V versus SCE, is obtained from. Mott—Schottky plots. A photoelectrochemical process based on internal photoemission in the emeraldine salt, which agrees with the model of granular metal island that assumes metallic polymer particles are embedded in the insulating matrix, is proposed.
Polyaniline films, Internal photoemission, Emeraldine salt
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