Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 2 de 2
Filtrar
Mais filtros

Base de dados
Ano de publicação
Tipo de documento
País de afiliação
Intervalo de ano de publicação
1.
Angew Chem Int Ed Engl ; 61(41): e202209590, 2022 10 10.
Artigo em Inglês | MEDLINE | ID: mdl-35902377

RESUMO

Much effort has been devoted to the generation of fluorescent probes by synthetic approaches. In this study, we developed a facile strategy to construct far-red fluorescent probes based on through-space charge transfer within complexes of acceptors and donors and their "twist+twist" interactions. Owing to their rare two-photon excitation property, the complexes could be used for in vivo imaging of the mouse cerebrovascular system.


Assuntos
Corantes Fluorescentes , Microscopia , Animais , Camundongos , Fótons
2.
Angew Chem Int Ed Engl ; 61(21): e202202005, 2022 05 16.
Artigo em Inglês | MEDLINE | ID: mdl-35257452

RESUMO

Facile tailoring of photosensitizers (PSs) with advanced and synergetic properties is highly expected to broaden and deepen photodynamic therapy (PDT) applications. Herein, a catalyst-free thiol-yne click reaction was employed to develop the sulfur atom-based PSs by using the in situ formed sulfur "heavy atom effect" to enhance the intersystem crossing (ISC), while such an effect can be remarkably magnified by the polymerization. The introduction of a tetraphenylpyrazine-based aggregation-induced emission (AIE) unit was also advantageous in PS design by suppressing their non-radiative decay to facilitate the ISC in the aggregated state. Besides, the resulting sulfur atom electron donor, together with a double-bond π bridge and AIE electron acceptor, created a donor-π-acceptor (D-π-A) molecular system with good two-photon excitation properties. Combined with the high singlet oxygen generation efficiency, the fabricated polymer nanoparticles exhibited an excellent in vitro two-photon-excited PDT towards cancer cells, therefore possessing a huge potential for the deep-tissue disease therapy.


Assuntos
Fotoquimioterapia , Fármacos Fotossensibilizantes , Fotoquimioterapia/métodos , Fármacos Fotossensibilizantes/química , Polimerização , Oxigênio Singlete , Enxofre
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA