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来源：百度知道 编辑：UC知道 时间：2024/05/26 12:20:36
Photochemical Reactions of Ketones to Synthesize Gold Nanorods
Photochemical synthesis of gold nanorods (NRs) in a micellar solution of hexadecyltrimethylammonium bromide (CTAB) was triggered by photoreactions of ketones. Photoexcitation of gold ions and silver bromide clusters ((AgBr)n) in the absence of ketones did not produce NRs. The initial products of the photoirradiation were probably ketyl radicals,which then initiated reactions to form NRs. NRs formed in darkness, if the reaction solutions were irradiated by UV light for a few minutes, thus indicating that the photochemical products catalyzed NR-formation.
Introduction
Gold nanorods (NRs) are rod-shaped nanoparticles prepared by wet-chemical techniques in micellar solutions of cationic amphiphiles. NRs have been attractive research subjects due to remarkable optical properties originating from their anisotropic shapes. That is, NRs exhibit two distinctive absorption bands that are assignable to transverse
Photochemical synthesis of gold nanorods (NRs) in a micellar solution of hexadecyltrimethylammonium bromide (CTAB) was triggered by photoreactions of ketones. Photoexcitation of gold ions and silver bromide clusters ((AgBr)n) in the absence of ketones did not produce NRs. The initial products of the photoirradiation were probably ketyl radicals,which then initiated reactions to form NRs. NRs formed in darkness, if the reaction solutions were irradiated by UV light for a few minutes, thus indicating that the photochemical products catalyzed NR-formation.
Introduction
Gold nanorods (NRs) are rod-shaped nanoparticles prepared by wet-chemical techniques in micellar solutions of cationic amphiphiles. NRs have been attractive research subjects due to remarkable optical properties originating from their anisotropic shapes. That is, NRs exhibit two distinctive absorption bands that are assignable to transverse
光化学反应酮的合成金纳米棒
光化学合成金纳米棒（ nrs ）在一个胶束溶液中的十六烷基溴化（ CTAB法）所引发的photoreactions酮。 photoexcitation黄金离子和溴化银团簇（ （ agbr ） n ）在没有酮没有产生nrs 。最初产品的photoirradiation大概ketyl自由基，然后开始反应，形成nrs 。 nrs形成了在黑暗中，如果反应的解决方法，照射紫外光为几分钟，从而表明该产品的光化学催化二○ ○ -形成。
导言
金纳米棒（ nrs ）是杆状纳米粒子编写的湿化学技术在胶束解的阳离子两亲。 nrs已具吸引力的研究课题，由于卓越的光学性能源自其各向异性的形状。这是， nrs展览二鲜明的吸收带是分配给横向和纵向模式，表面等离子体（ SP ）的振荡。横向sp带位于靠近520 nm处，而纵向sp波段观察
在近红外（近红外）有一个大的吸收系数（ 3500 〜 4000 （非盟原子） ） 。山顶的立场，纵向sp阶可调，因为他们依赖于形状和体积nrs在射程750 〜 1300 nm左右。理论思考的SP带， nrs已经报道。因此，二○ ○是一种新型的近红外色素可用于分析，光化学，生化应用。