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xiejb2005

金虫 (正式写手)

[求助] 金纳米与巯基反应的具体条件

金纳米与巯基反应的具体条件是什么?
为什么我的金纳米和巯基总是不能反应呢?
盼高手 赐教
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mrzouhao

木虫之王 (文坛精英)

【答案】应助回帖

★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
感谢参与,应助指数 +1
fool_proof: 金币+1, 感谢回帖应助,欢迎常来生物材料版块交流~ 2013-01-12 07:44:23
xiejb2005: 金币+10, 有帮助, 谢谢先 2013-01-12 17:21:31
xiejb2005(红舟流星代发): 金币+9 2013-04-30 08:57:13
http://pubs.acs.org/doi/abs/10.1021/ja993622x
How thiols and disulfides bind to gold surfaces to form self-assembled monolayers is a long-standing open question. In particular, determining the nature itself of the anchor groups and of their interaction with the metal is a priority issue, which has so far been approached only with oversimplified models. We present ab initio calculations of the adsorption configurations (dissociative and not) of methanethiol and dimethyl disulfide on Au(111) at low coverage, which are based on density functional theory using gradient-corrected exchange-correlation functionals. A complete characterization of their structure, binding energies, and type of bonding is obtained. It is established that dissociation is clearly favored for the disulfide with subsequent formation of strongly bound thiolates, in agreement with experimental evidence, whereas thiolates resulting from S−H bond cleavage in thiols can coexist with the adsorbed “intact” species and become favored if accompanied by the formation of molecular hydrogen.
2楼2013-01-12 00:18:53
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vesakam

新虫 (初入文坛)

同求!
3楼2020-01-08 16:17:30
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