Center for Photochemical Sciences, Bowling Green State University, 132 Overman Hall, Bowling Green, Ohio 43403, USA.
Photochem Photobiol Sci. 2009 Nov;8(11):1568-73. doi: 10.1039/b9pp00043g. Epub 2009 Sep 17.
5-Mercapto-2,2'-bithiophene functionalized metal nanoparticles BTSMs [M: copper (Cu), silver (Ag), and gold (Au)] of different diameters (2-8 nm) were synthesized. Conductive polymeric metal nanoparticles were formed from BTSM by UV irradiation. The photopolymerization mechanism was investigated using transient absorption measurements. Intramolecular electron transfer from the ligand to the metal nano-core was confirmed. Nanoparticle size, as well as plasmon electronic interactions, are important factors. The smaller the nanoparticle and the stronger the electronic interactions, the faster the electron transfer is. The three-dimensional structure of the polymerized BTSM was identified using transmission electron microscopy (TEM) and scanning electron microscopy (SEM). The conductivity of polymerized BTSM measured in poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate) (PEDOT/PSS) film is higher than that of the nonpolymerized BTSM.
5-巯基-2,2'-联噻吩功能化的不同直径（2-8nm）金属纳米粒子 BTSMs [M：铜（Cu）、银（Ag）和金（Au）]被合成。通过紫外线照射，从 BTSM 形成了导电聚合物金属纳米粒子。使用瞬态吸收测量研究了光聚合机理。确认了从配体到金属纳米核的分子内电子转移。纳米粒子的尺寸以及等离子体电子相互作用是重要的因素。纳米粒子越小，电子相互作用越强，电子转移越快。使用透射电子显微镜（TEM）和扫描电子显微镜（SEM）确定了聚合 BTSM 的三维结构。在聚（3,4-亚乙基二氧噻吩）/聚（苯乙烯磺酸盐）（PEDOT/PSS）薄膜中测量的聚合 BTSM 的电导率高于非聚合 BTSM 的电导率。
