金电极上偶氮腺嘌呤的电化学行为研究

本文研究了光滑金电极上偶氮腺嘌呤的电化学特性,并确定了相关动力学参数.在含偶氮腺嘌呤的0.2mol·L-1的磷酸盐缓冲液（PBS,pH=4.0～10.0）中,发现其循环伏安图上出现一对氧化还原峰.基于对扫速和伏安峰值电位的分析,结果表明这是一个由吸附控制的可逆偶氮腺嘌呤氧化还原电化学过程.当pH值从低到高改变时,氧化还原峰值向负电位移动,证实H+参与了该反应.通过进一步实验数据分析和电极表面吸附量计算,发现该反应为分步进行的两电子两质子反应.最后,通过快速循环伏安扫描方法确定了电化学过程的表观传递系数α和表观速率常数ks

Fabrication of photodetector by compatible standard Si process

提出采用Si基标准工艺进行研制与标准工艺兼容的光敏三极管,重点解决光敏三极管结构与标准工艺兼容性问题,并实现对其结构、性能的优化设计。通过CAD; ENCE软件,画出不同光敏三极管的版图;根据华润上华(CSMC)Si基标准工艺流程,采用器件模拟软件Silvaco,对光敏三极管结构进行构建和仿; 真;基于理论分析结果,通过设计改变结构优化光敏三极管性能。采用CSMC标准Si工艺,实现了基区面积分别为40 mum*40 mum、50; mum*100 mum、80 mum*100 mum和100 mum*100; mum光敏三极管的流片、封装和测试。结果显示,所设计的光敏三极管的响应度达到2.02 A/W,放大倍数beta达到60倍,最大带宽达到50; MHz左右。并且,标准Si工艺的低成本和放大集成电路的兼容性,使得制备的光敏三极管可以广泛适用于快速光耦合器、光数据接收器等应用领域。In this paper,we adopt standard Si-based process to develop a; phototransistor which is compatible with the standard process, and solve; the compatibility problems between the structure of phototransistor and; standard processes. Furthermore, we achieve the optimal design of its; structure and properties. According to standard Si-based process from; CSMC,based on the theoretical analysis, we adopt Sil vaco to build and; simulate the phototransistor by changing the structure of it. After; packaging and testing,the phototransistors with the base areas of 40; mum*40 mum,50 mumX 100 mum,80 mum* 100 mum and 100 mum* 100 mum are; achieved The experimental results show that the performance of the; designed photosensitive transistor is good The responsivity can reach; 2.02 A/ W, magnification factor can be up to 60, and the maximum; bandwidth can reach as high as 50 MHz. Furthermore, the low cost and; compatibility of standard Si process make it suitable for fast optical; coupler,optical data receivers and other optical devices.国家自然科学基金; 安徽省高校省级自然科学基金; 安徽省自然科学基金; 厦门大学校长基

Electrochemical Behaviors of Azopurine on Gold Electrodes

本文研究了光滑金电极上偶氮腺嘌呤的电化学特性，并确定了相关动力学参数. 在含偶氮腺嘌呤的0.2 mol·L-1的磷酸盐缓冲液(PBS，pH = 4.0 ~ 10.0）中，发现其循环伏安图上出现一对氧化还原峰. 基于对扫速和伏安峰值电位的分析，结果表明这是一个由吸附控制的可逆偶氮腺嘌呤氧化还原电化学过程. 当pH值从低到高改变时，氧化还原峰值向负电位移动，证实H+参与了该反应. 通过进一步实验数据分析和电极表面吸附量计算，发现该反应为分步进行的两电子两质子反应. 最后，通过快速循环伏安扫描方法确定了电化学过程的表观传递系数α和表观速率常数ks.In this paper, we studied the electrochemical behaviors of azopurine on polished gold electrodes with cyclic voltammetry (CV). On the basis of analyzing scan rate and peak current, it was supposed that the redox process belonged to a reversible process controlled by adsorption in 0.2 mol·L-1 PBS (pH = 4.0 ~ 10.0) solutions. The potentials of redox peaks moved more negatively with increasing pH value. This proved that the H+ proton has participcted in the electrochemical reaction. The further data analysis and the calculation of surface adsorption excess demonstrated that the reaction was a two-proton and two-electron process. Finally, the apparent transfer coefficient α and the apparent rate constant ks were determined by the fast-scan cyclic voltammetry method.国家自然科学基金项目（No. 21533006, No. 21621091, No. 21773197）和福建省创新人才资助作者联系地址：厦门大学化学化工学院化学系， 固体表面物理化学国家重点实验室， 福建 厦门 361005Author's Address: Department of Chemistry,College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China通讯作者E-mail：[email protected]

Assessment Report of Doctoral Theses

Highly sensitive detection of aromatic molecules by laser induced ionization method[陳]非交互共役化合物の回転異性体に関する速度論的研究[池田]コバルト(II)錯体を用いる反応設計に関する研究[萬]セラミックス多層回路基板材料に関する研究[牛房]有機鎖状分子結晶の凝集特性と相転移挙動に関する研究[占部]TE01モードによる電子サイクロトロン共鳴プラズマの大口径化に関する研究[日高]非線形光学用有機化合物の探索とその材料化に関する研究[松元]産業応用プラズマのレーザー光散乱による計測法の開発[迫田

学位論文審査報告

Highly sensitive detection of aromatic molecules by laser induced ionization method[陳]非交互共役化合物の回転異性体に関する速度論的研究[池田]コバルト(II)錯体を用いる反応設計に関する研究[萬]セラミックス多層回路基板材料に関する研究[牛房]有機鎖状分子結晶の凝集特性と相転移挙動に関する研究[占部]TE01モードによる電子サイクロトロン共鳴プラズマの大口径化に関する研究[日高]非線形光学用有機化合物の探索とその材料化に関する研究[松元]産業応用プラズマのレーザー光散乱による計測法の開発[迫田

JUNO Sensitivity on Proton Decay p→νˉK+p\to \bar\nu K^+ Searches

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this paper, the potential on searching for proton decay in $p\to \bar\nu K^+$ mode with JUNO is investigated.The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits to suppress the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar\nu K^+$ is 36.9% with a background level of 0.2 events after 10 years of data taking. The estimated sensitivity based on 200 kton-years exposure is $9.6 \times 10^{33}$ years, competitive with the current best limits on the proton lifetime in this channel

JUNO sensitivity on proton decay p → ν K + searches*

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this study, the potential of searching for proton decay in the $p\to \bar{\nu} K^+$ mode with JUNO is investigated. The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits suppression of the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar{\nu} K^+$ is 36.9% ± 4.9% with a background level of $0.2\pm 0.05({\rm syst})\pm$$0.2({\rm stat})$ events after 10 years of data collection. The estimated sensitivity based on 200 kton-years of exposure is $9.6 \times 10^{33}$ years, which is competitive with the current best limits on the proton lifetime in this channel and complements the use of different detection technologies