Photodiode‐like behavior of jelly dye‐sensitized donor‐acceptor dendrimers

Abstract

Hybrid photodiodes (HPD) systems are on the rise. The growing interest on these devices is mainly due to their power in image sensing and bioengineering solutions. In this work, a new class of donor-acceptor dendrimers was synthesized and incorporated, along with a ruthenium sensitizer dye, into low cost devices comprised of one single layer of a biocompatible matrix (agarose). Exploring different electrodes, low current devices with a counter-electrode dependent response have been successfully assembled at room temperature. Using a stainless steel electrode, sensitized donor-acceptor dendrimers provide photodiode-like systems having nA dark currents.

Dióxido de Carbono Supercrítico: Uma Alternativa para uma Síntese Mais Sustentável

“…Por outro lado, o scCO 2 permite uma purificação muito mais fácil e sustentável dos polímeros, comparativamente à via clássica, um maior controlo do tamanho das cadeias do polímero e a diminuição da formação de aglomerados. Por estas razões, o scCO 2 tem sido explorado na síntese de diversos tipos de polímeros, lineares, reticulados e ramificados, recorrendo a diferentes estratégias de polimerização, como por exemplo a polimerização por abertura de anel [22][23][24][25][26][27][28][29][30][31][32].…”

The photodiode performances of NDI-appended ruthenium complexes

“…On the other hand, ruthenium complexes have been extensively studied due to their optoelectronic properties [16][17][18][19][20][21]. In particular, ruthenium complexes have been identified as significant components in developing advanced photodiode systems [17,[22][23][24][25]. The sensitivity and stability of ruthenium-based materials have improved the efficiency of photodiodes.…”

Osteogenic Differentiation of Human Mesenchymal Stem Cells by the Single Action of Luminescent Polyurea Oxide Biodendrimers

“…, amides in PAMAM) may justify branch chemistry postponing. Nevertheless, very recently, we reported the conversion of poly­(urea amidoamidine) (PURAM) dendrimers to the corresponding poly­(imidazolone amine) (PIMAM) dendrimers, taking advantage of the urea reactivity toward benzoins . Branch modification and simple further N -oxidation to poly­(imidazolone amine oxide) (PIMAMO) demonstrate the potential of polyurea-based dendrimers as intermediates for architectures with novel functions.…”