对羟基二联苯诱导的表面金属-有机键断裂  

Break of Metal-organic Chains Induced by 4,4′-Dihydroxybiphenyl on Surfaces

作　　者：徐智超 李雪超 唐雁宁 张海明[1] 迟力峰[1] XU Zhichao;LI Xuechao;TANG Yanning;ZHANG Haiming;CHI Lifeng(Jiangsu Key Laboratory for Carbon Based Functional Materials&Devices,Institute of Functional Nano&Soft Materials(FUNSOM),Soochow University,Suzhou 215123,China)

机构地区：[1]苏州大学功能纳米与软物质研究院,江苏省碳基功能材料与器件高技术研究重点实验室,苏州215123

出　　处：《高等学校化学学报》2021年第4期1241-1245,共5页Chemical Journal of Chinese Universities

基　　金：国家重点研发计划项目(批准号:2017YFA0205002);国家自然科学基金(批准号:21673154,21790053,51821002)资助.

摘　　要：金属-有机杂化结构是表面在位反应过程中常见的中间体.金属-有机杂化结构中金属-有机键的断裂需要克服较高的活化能垒,往往会引起一系列竞争副反应以及分子的脱附.本文利用扫描隧道显微镜研究了4,4′-二羟基联苯分子在金属表面与预先制备的金属-有机链的作用,发现其氧端能有效地降低金属有机杂化体系断键的能垒,使得金属-有机键的断键反应能在较低的温度下进行.该结果提供了一种调控表面反应中间物的新手段.Metal-organic hybrid structures are common intermediates in on-surface reactions.To break metal-organic bonds of the hybrid structures needs to overcome a higher activation barrier,which often leads to a series of competitive side reactions and even desorption of target products.Scanning tunneling microscope(STM)has been used to show that the oxygen terminal of 4,4′-dihydroxybiphenyl can effectively reduce the bond breaking barrier of the metal-organic hybridization system,so that the transfer of metal-organic hybrids can be carried out at a lower temperature.This result provides a new method to regulate the intermediates of on-surface reactions.

关 键 词：扫描隧道显微镜 表面在位反应 金属-有机杂化结构 

分 类 号：O647[理学—物理化学]