The [2 + 2] condensation between 1,8-dihydroxyanthraquinone diester and 1,3-diamino-2-propanol in ethanol affords pseudocalixarene macrocyclic L2 in high yield. Heating L2 to 200 °C in DMSO can generate much smaller [1 + 1] macrocycle L1 . Crystal structure of L1 shows that all non-hydrogen atoms are coplanar except one carbon from 1,3-diamino-2-propanol. L1 is quite inert, but L2 can interact with alkaline, alkaline-earth, as well as Zn 2+ , Cu 2+ , Fe 3+ and Al 3+ cation (chloride) evidenced by their CV and 1 H NMR. With a L2 :M (1:2), there are discernable UV–vis spectrum/ 1 H NMR changes in the presence Cu 2+ , Fe 3+ , Al 3+ . Anion plays a key role in the cation binding process as the chromogenic response to Li + , Na + , K + , Ba 2+ and TBA + hydroxide. L2 forms 1:1 complex with TBAOH and 2:3 complex with NaOH, KOH, Ba(OH) 2 in DMSO. L2 reacts with LiOH in 1:4 stoichiometric and is one of the highest lithium loading ligand. The reaction is second-order with t 1/2 ~ 30 min for 0.25 mM L2 in the presence of 4.0 eq. LiOH. Besides hydroxide, L2 can interact with TBAF to form 1:1 host–guest complexes evidenced by their color and NMR change. With bulky cation, TBAOH shifts E p(II) more negative, while other cations shift E p(II) to positive. L2 is an ion pair acceptor that binds hydroxide and fluoride salt chromogenic.
Tan Jin,Fang Sunmiao,Zhang Zhuhua,Yin Jun,Li Luxian,Wang Xiang,Guo Wanlin
Generating sustainable electricity from ambient humidity and natural evaporation has attracted tremendous interest recently as it requires no extra mechanical energy input and is deployable across all weather and geography conditions. Here, we present a device prototype for enhanced power generation from ambient humidity. This prototype uses both heterogenous materials assembled from a LiCl-loaded cellulon paper to facilitate moisture adsorption and a carbon-black-loaded cellulon paper to promote water evaporation. Exposing such a centimeter-sized device to ambient humidity can produce voltages of around 0.78 V and a current of around 7.5 μA, both of which can be sustained for more than 10 days. The enhanced electric output and durability are due to the continuous water flow that is directed by evaporation through numerous, negatively charged channels within the cellulon papers. The voltage and current exhibit an excellent scaling behavior upon device integration to sufficiently power commercial devices including even cell phones. The results open a promising prospect of sustainable electricity generation based on a synergy between spontaneous moisture adsorption and water evaporation.
危险品化学品经营许可证（带存储）