Molecular ferroelectric HDA-BiI5 has been utilized as the light-absorbing layer for organic-inorganic hybrid solar cells.

Room-temperature phosphorescent carbon dots (RTPCDs) have attracted considerable interests due to their unique nanoluminescent characteristic with time resolution. However, it is still a formidable challenge to construct multiple stimuli-activated RTP behaviors on CDs. Since the address of this issue facilitates complex and high-regulatable phosphorescent applications, we here develop a novel strategy to achieve a multiple stimuli responsive phosphorescent activation on a single carbon-dot system (S-CDs), using persulfurated aromatic carboxylic acid as the precursor. The introduction of aromatic carbonyl groups and multiple S atoms can promote the intersystem crossing process to generate RTP characteristic of the produced CDs. Meanwhile, by introducing these functional surface groups into S-CDs, the RTP property can be activated by light, acid, and thermal stimuli in solution or in film state. In this way, multistimuli responsive and tunable RTP characteristics are realized in the single carbon-dot system. Based on this set of RTP properties, S-CDs is applied to photocontrolled imaging in living cells, anticounterfeit label, and multilevel information encryption. Our work will benefit the development of multifunctional nanomaterials together with extending their application scope.

A new strategy has been developed to synthesize difurylperhydrocyclopentene derivatives. The compound displays reversible photochromism in solution and thin-film. The results show that furan is superior to thiophene in terms of strong fluorescence, higher photocyclization conversion and cyclization quantum yield, as well as better fatigue resistance. Owing to the molecule being derived absolutely from C, H, and O atoms, the compound exhibits no cytotoxicity, which enables it to potentially serve as a biodegradable and biorenewable material for in vivo applications.

Without the use of chemical oxidants and metal catalysts, an aqueous electrochemical synthesis of 5trifluoromethyluracil in batch and continuous flow was reported. The green and economically friendly approach employing commercially available CF 3 SO 2 Na as a CF 3 source and cheap (NH 4 ) 2 SO 4 as a supporting electrolyte afforded the 5trifluoromethyluracil in 10 g scale in batch electrolysis. The continuous flow-electrolysis technique was employed to further facilitate the scale-up synthesis of 5-trifluoromethyluracil.