TY - JOUR
T1 - Light-Induced Aggregation of Gold Nanoparticles and Photoswitching of Silicon Surface Potential
AU - Ikbal, Mohammed
AU - Balogh, Dora
AU - Mervinetsky, Evgeniy
AU - Sfez, Ruthy
AU - Yitzchaik, Shlomo
N1 - Funding Information: This project (RECORD-IT) has received funding from the European Union’s Horizon 2020 research and innovation programme under Grant Agreement No 664786; S.Y. is the Binjamin H. Birstein Chair in Chemistry. Publisher Copyright: © 2017 American Chemical Society.
PY - 2017/12/7
Y1 - 2017/12/7
N2 - Hybrid nanomaterials having tunable properties that can be reversibly conducted by external stimuli, in a particular light, are of great importance since they enable synergetic behavior between their components and enable the design of stimuli responsive "smart" materials and surfaces. Here we describe the formation of organic-inorganic hybrid nanoparticles that photochemically aggregate and their effect on the electronic properties of a semiconducting surface, as a function of external irradiation. The inorganic component consists of 3 nm gold nanoparticles while the organic component is a covalently attached, photochromic spiropyran derivative. Aggregation/deaggregation patterns in solution were obtained and analyzed by UV-vis spectroscopy and transmission electron microscopy upon photoswitching. The assembly of spiropyran-modified gold nanoparticles on an Si/SiO2 surface proved useful in phototuning the electronic properties of semiconductors measured by contact potential difference.
AB - Hybrid nanomaterials having tunable properties that can be reversibly conducted by external stimuli, in a particular light, are of great importance since they enable synergetic behavior between their components and enable the design of stimuli responsive "smart" materials and surfaces. Here we describe the formation of organic-inorganic hybrid nanoparticles that photochemically aggregate and their effect on the electronic properties of a semiconducting surface, as a function of external irradiation. The inorganic component consists of 3 nm gold nanoparticles while the organic component is a covalently attached, photochromic spiropyran derivative. Aggregation/deaggregation patterns in solution were obtained and analyzed by UV-vis spectroscopy and transmission electron microscopy upon photoswitching. The assembly of spiropyran-modified gold nanoparticles on an Si/SiO2 surface proved useful in phototuning the electronic properties of semiconductors measured by contact potential difference.
UR - http://www.scopus.com/inward/record.url?scp=85038207333&partnerID=8YFLogxK
U2 - https://doi.org/10.1021/acs.jpcc.7b09266
DO - https://doi.org/10.1021/acs.jpcc.7b09266
M3 - Article
SN - 1932-7447
VL - 121
SP - 27176
EP - 27181
JO - Journal of Physical chemistry c
JF - Journal of Physical chemistry c
IS - 48
ER -