Fig. 1: Photo-responsive macrocycles.
From: Design, synthesis and applications of responsive macrocycles
a planar twist of the inside connected dithiophene unit photoinduced by the azo-based macrocycle 123. b photo-tunable geometries of a hydrogen-bonded azo-macrocycle 2 and its specific binding model (2:1) with guest molecule G224. c the chemical structures of biazobenzophane 3, triazobenzophane 4, tetraazobenzophane 5 contained different azo group numbers inside respectively27. d the chemical structures of donors P-ap-PY, (R, R)-c-PY and acceptor DP and photoinduced chiral switching process of DAE-based metallacycle from ap-[3 + 3]-6 to o-[3 + 3]-629. e the photo-controlled topology and acidochromic property of metallacycle 731, the chemical structures and reversible isomerization of the spiropyran-functionalized dipyridyl donor and di-Pt(II) acceptor 8.
