The robustness and biocompatibility of bacterial nanocages holds promise for bio-nanotechnologies. The propensity of these nano-carriers to penetrate cells has been demonstrated, which calls for the development of tracking strategies, both in vitro and in vivo. Here, we label bacterial nanocages with photo-switchable fluorophores, to facilitate their imaging by super-resolution microscopy. We d...

Spiropyrans modified with reactive polyfunctional substituents are of great interest as building blocks for the creation various smart systems controllable properties materials science and biomedicine. In this study, a new highly spiropyran indoline series, methyl 5′-chloro-8-formyl-5-hydroxy-1′,3′,3′-trimethyl-spiro[chromene-2,2′-indoline]-6-carboxylate, was obtained via cyclocondensation reac...

The phofoinduccd rransjcis isornerization is one of the 111051 important fundamental processes in photoclwlttical and photobiological reactions. and many invcsrigarions have been carried out in order to elucidate its mechanism. Recently. direct observation of rhe isomcrization process in rhe singlet excited state 113s become possible owing to the development of p~i~~~md iascr spectroscopy. Up 1...

In this report, antibacterial peptides 1-3 were prepared with a spiropyran fluorescence probe. The probe exhibits a change in fluorescence when isomerized from a colorless spiro-form (spiropyran, Sp) to a colored open-form (merocyanine, Mc) under different chemical environments, which can be used to study the mechanism of antimicrobial activity. Peptides 1-3 exhibit a marked decrease in antimic...

Molecules comprised of two or more switches have potential to exist in a variety states, which may only be accessible by “correct” sequence stimuli on account the influence neighboring unit. Here we present straightforward synthesis dyad incorporating photoswitchable units, dihydroazulene (DHA) and spiropyran (SP). The photoswitching properties both chromophores acido-triggered switching SP wer...

In this paper, magnetic and fluorescent bifunctional YbPO4:Er,Dy microspheres were synthesized via a simple solvothermal method. The prepared microspheres exposed to 980 nm near-infrared (NIR) laser light emitted bright upconversion fluorescence (450-570 nm) after calcination at high temperatures (>800°C). Results of magnetic resonance studies demonstrated that the YbPO4:Er,Dy microspheres are ...