Controlled supramolecular assemblies of luminescent tridentate cyclometalated alkynylgold(III) amphiphiles in aqueous media

• Kelvin Sze-Yim Cai,
• Brian Boyan Liu and
• Franco King-Chi Leung

Beilstein J. Org. Chem. 2026, 22, 1097–1106, doi:10.3762/bjoc.22.88

• from disordered nanosheets to well-ordered nanoribbons upon the additions of multiple equivalents of counterion, enabling a tunable pathway for controlled supramolecular transformation. Keywords: amphiphiles; gold(III) complex; luminescence; self-assembly; supramolecular chemistry; Introduction

• supramolecular transformation from regular nanoribbons to sheet-like nanostructures (Supporting Information File 1, Figure S7). The distinct assembly outcomes observed with bromide and tosylate can be rationalized by considering their effects on the molecular packing parameter. As a small, highly hydrated

• supramolecular assembly transformations from sheet-like nanostructures to spherical nanosheets, and to stacked nanoribbons throughout an aging process. Well-defined monolayered and multilayered nanoribbons were observed by varying concentrations of tosylate ions. The reverse supramolecular transformation was

Supramolecular assemblies of amphiphilic donor–acceptor Stenhouse adducts as macroscopic soft scaffolds

• Ka-Lung Hung,
• Leong-Hung Cheung,
• Yikun Ren,
• Ming-Hin Chau,
• Yan-Yi Lam,
• Takashi Kajitani and
• Franco King-Chi Leung

Beilstein J. Org. Chem. 2024, 20, 1590–1603, doi:10.3762/bjoc.20.142

• fabrication of visible-light-controlled macroscopic scaffolds, offering the next generation of biomedical materials with visible-light-controlled microenvironments and future soft-robotic systems. Keywords: donor–acceptor Stenhouse adduct; photoresponsive molecular amphiphile; supramolecular transformation

• -driven supramolecular assemblies on a microscopic length scale, such as those containing spiropyrans, azobenzenes, and indigos, have been used in transformations in aqueous medium [35][45][46]. However, very few examples of visible-light-driven supramolecular transformation on a macroscopic length scale

• micelle structures 3–4 nm in diameter (Figure 3b and Figure S8b, Supporting Information File 1). The supramolecular structure of DA11 and the supramolecular transformation were similar to those observed in DA10 [37]. This subtle increase in alkyl linker length in DA11 gave an essentially identical

Selective detection of DABCO using a supramolecular interconversion as fluorescence reporter

• Indrajit Paul,
• Debabrata Samanta,
• Sudhakar Gaikwad and
• Michael Schmittel

Beilstein J. Org. Chem. 2019, 15, 1371–1378, doi:10.3762/bjoc.15.137

• dual-state supramolecular transformation driven by addition/removal of DABCO (4) and it requires a transition between completive vs incomplete self-sorting [27][28]. The fact that DABCO (4) exclusively drives the supramolecular interconversion was further developed into a fluorescent reporter system