Electron-transfer through potential gradient based on a dendrimer architecture.
نویسندگان
چکیده
A dendritic nano-shell based on rigid phenylazomethine units can rectify electron transfer. By use of this function, the photo-induced charge separation was significantly enhanced due to the facilitated and stabilized radical ion pair.
منابع مشابه
A potential gradient along the layer-by-layer architecture for electron transfer rectification.
Electrochemical and photochemical measurements demonstrated that dendritic phenylazomethines, which can make complexes with SnCl2 by a stepwise process, only permit an outbound electron transfer. The unique dendrimer effect allows efficient production of photo-generated radical ion pairs by suppressing their charge recombination. In sharp contrast, the phenylenevinylene or benzylether dendrimer...
متن کاملEnergy and electron transfer in bifunctional non-conjugated dendrimers.
Nonconjugated dendrimers, which are capable of funneling energy from the periphery to the core followed by a charge-transfer process from the core to the periphery, have been synthesized. The energy and electron donors involve a diarylaminopyrene unit and are incorporated at the periphery of these dendrimers. The energy and electron acceptor is at the core of the dendrimer, which involves a chr...
متن کاملUnidirectional Energy Transfer in Conjugated Molecules: The Crucial Role of High-Frequency CtC Bonds
Excited-state nonadiabatic molecular dynamics is used to study energy transfer in dendrimer building blocks, between two-, three-, and four-ring linear polyphenylene ethynylene units linked by meta-substitutions. Upon excitation, dendrimers with these building blocks have been shown to undergo highly efficient and unidirectional energy transfer. The simulations start by initial vertical excitat...
متن کاملApplicability of the Dendrimer-quantum Dot (Den-QD) Bioconjugate as a Novel Nanocomposite for Signal Amplification in the Fabrication of Cocaine Aptasensor
A selective aptasensor was developed using the electrochemical transduction method for the ultrasensitive detection of cocaine. In this method, dendrimer-quantum dot (Den-QD) bioconjugate was utilized as a specific nanocomposite to efficiently fabricate the aptasensor. CdTe QD, which carries highly significant properties, was immobilized on the surface of a glassy carbon electrode (GCE), and po...
متن کاملFabrication of triblock ABA type peptide dendrimer based on glutamic acid dimethyl ester and PEG as a potential nano drug delivery agent
INTRODUCTION Peptide dendrimers build up from amino acids and they simulate to artificial proteins with globular architecture. These characteristics furnish peptide dendrimers with best biodegradability and biocompatibility in drug delivery systems. METHODS A barbell-like dendrimer from glutamic acid dimethyl ester-poly (ethylene glycol)-glutamic acid dimethyl ester as ABA-type triblock copol...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Chemical communications
دوره 48 58 شماره
صفحات -
تاریخ انتشار 2012