C- and S-Shaped Perylene Diimide Heterohelicenes: Modular Synthesis and Spiral-Stair-Like π-Stacking.
Sign Up to like & getrecommendations! Published in 2022 at "Organic letters"
DOI: 10.1021/acs.orglett.2c00928
Abstract: A number of C- and S-shaped perylene diimide (PDI) heterohelicenes with high dipole moments were synthesized from simple perylene tetrabutylester (PTE). Taking advantage of the weak coordination ability of the sterically crowded peri ester groups… read more here.
Keywords: stair like; spiral stair; like stacking; shaped perylene ... See more keywords
Stable Autonomous Spiral Stair Climbing of Tracked Vehicles Using Wall Reaction Force
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Robotics and Automation Letters"
DOI: 10.1109/lra.2020.3015463
Abstract: In this letter, an autonomous spiral stair climbing method for tracked vehicles using the reaction force from side walls has been proposed. Spiral stairs are one of the most difficult terrains for tracked vehicles because… read more here.
Keywords: stair climbing; autonomous spiral; tracked vehicles; spiral stair ... See more keywords