Multihalogenated Zn phthalocyanine as a precursor for porous Zn-N-C carbons toward electrocatalytic oxygen reduction.

Multihalogenated Zn phthalocyanine, a commonly used color filter pigment, when pyrolyzed under NH atmosphere, produces porous carbon powders containing Zn-N coordination sites that exhibit high electrocatalytic O reduction reaction (ORR) performance with long-term stability and chemical resistance.

Resorcinol-formaldehyde semiconducting resins as precursors for carbon spheres toward electrocatalytic oxygen reduction.

The carbon spheres synthesized by pyrolysis of resorcinol-formaldehyde (RF) semiconducting resins exhibit enhanced activity for electrocatalytic oxygen reduction. The spheres consist of narrow reticulated carbon layers, which are derived from the donor-acceptor π-stacking interaction of the resins, and show high electron conductivity.

Associations between older adults' going-out frequency and land price of neighbourhoods: Potency of land price as an indicator of homebound tendency.

The aim of this study is to identify the potency of land price as a general indicator of the homebound tendency of neighbourhoods. For this purpose, we focus on the associations between land price and older adults' going-out frequency, while considering the similarities and differences from factors associated with walkability. The study targets are 19,270 individuals living in the Tokyo metropolitan area who are aged 65 years or older who are not certified as needing public long-term care insurance.