Graphene oxide covalently functionalized with zinc phthalocyanine for broadband optical limiting
نویسندگان
چکیده
منابع مشابه
Synthesis and strong optical limiting response of graphite oxide covalently functionalized with gallium phthalocyanine.
A soluble graphite oxide (GO) axially substituted gallium phthalocyanine (PcGa) hybrid material (GO-PcGa) was for the first time synthesized by the reaction of tBu(4)PcGaCl with GO in anhydrous DMSO at 110 °C in the presence of K(2)CO(3). The formation of a Ga-O bond between PcGa and GO has been confirmed by x-ray photoelectron spectroscopy. In contrast to GO, the D and G bands of GO-PcGa in th...
متن کاملMechanism studies on the superior optical limiting observed in graphene oxide covalently functionalized with upconversion NaYF₄ :Yb³⁺/Er³⁺ nanoparticles.
The increased utilization of high power laser sources has rendered great challenges for designing effi cient optical limiting (OL) materials to protect human eyes and various delicate optical devices. An ideal optical limiter should greatly attenuate an intense laser beam while exhibiting high transmittance for low-input optical intensity. [ 1 ] Up to now, numerous organic and inorganic materia...
متن کاملGreen-Reduction of Covalently Functionalized Graphene Oxide with Varying Stoichiometry
Graphene-based materials were prepared by chemical reduction of covalently functionalized graphene oxide with environmentally friendly agents. Two varying stoichiometry of graphene oxide (GO) induced by using different chemical preparation conditions, further covalent functionalization of the GO materials with 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride / N-hydroxysuccinimide a...
متن کاملSpectroscopy of covalently functionalized graphene.
In order to engineer a band gap into graphene, covalent bond-forming reactions can be used to change the hybridization of the graphitic atoms from sp(2) to sp(3), thereby modifying the conjugation length of the delocalized carbon lattice; similar side-wall chemistry has been shown to introduce a band gap into metallic single-walled carbon nanotubes. Here we demonstrate that the application of s...
متن کاملA non-volatile memory device consisting of graphene oxide covalently functionalized with ionic liquid.
We introduce non-volatile resistive crossbar memory based on ionic liquid covalently functionalized on a partially reduced graphene oxide (PrGO). The write-read-erase-read (WRER) cycles were very stable after several hundred cycles and the retention time of both the ON and OFF states was stable for over 1000 s, indicating that the device we developed can function as a non-volatile memory device.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Carbon
سال: 2011
ISSN: 0008-6223
DOI: 10.1016/j.carbon.2011.01.014