Charge-transfer regulated visible light driven photocatalytic H production and CO reduction in tetrathiafulvalene based coordination polymer gel.

The much-needed renewable alternatives to fossil fuel can be achieved efficiently and sustainably by converting solar energy to fuels via hydrogen generation from water or CO reduction. Herein, a soft processable metal-organic hybrid material is developed and studied for photocatalytic activity towards H production and CO reduction to CO and CH under visible light as well as direct sunlight irradiation. A tetrapodal low molecular weight gelator (LMWG) is synthesized by integrating tetrathiafulvalene (TTF) and terpyridine (TPY) derivatives through amide linkages and results in TPY-TTF LMWG.

Reversible Polymorphism, Liquid Crystallinity, and Stimuli-Responsive Luminescence in a Bola-amphiphilic π-System: Structure-Property Correlations Through Nanoindentation and DFT Calculations.

We report the design, synthesis, detailed characterization, and analysis of a new multifunctional π-conjugated bola-amphiphilic chromophore: oligo-(p-phenyleneethynylene)dicarboxylic acid with dialkoxyoctadecyl side chains (OPE-C-1). OPE-C-1 shows two polymorphs at 123 K (OPE-C-1') and 373 K (OPE-C-1″), whose crystal structures were characterized via single crystal X-ray diffraction. OPE-C-1 also exhibits thermotropic liquid crystalline property revealing a columnar phase.