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Approach to highly efficient dye-sensitized solar cells (DSSCs) by co-sensitization of organic dyes, AZ6+AZ5 with co-adsorbent chenodeoxycholic acid (CDCA) is presented. The power conversion efficiencies (PCEs) of 8.55% and 8.31% are obtained from DSSCs co-sensitized by AZ6 (0.3 mmol/L)+AZ5 (0.1 mmol/L) with CDCA concentration of 5 and 20 mmol/L in one step cocktail, respectively. The latter shows high stability in a period of 653 h under ambient conditions. Same keywords: dye-sensitized solar cells;co-sensitization;chenodeoxycholic acid;power conversion efficiency.
Obeticholic acid (OCA; INT-747, 6α-ethyl-chenodeoxycholic acid) is a semisynthetic derivative of the primary human bile acid chenodeoxycholic acid, the natural agonist of the farnesoid X receptor, which is a nuclear hormone receptor that regulates glucose and lipid metabolism. In animal models, OCA decreases insulin resistance and hepatic steatosis.
Chenodeoxycholic acid as spacer and aromatic compounds as arm, designed and synthesized a new class of molecular tweezers, and its structure by 1HNMR, IR, MS and elemental analysis. By UV spectroscopy titration investigated with D / L enantioselective recognition performance amino acid methyl esters. the results showed that molecular tweezers 3a ~ 3e of the investigated amino acid methyl esters have the ability to identify its recognition of L- amino acid methyl ester of better recognition of D-amino acid methyl ester from the aspect of the size and shape, matching geometric complementary relationship of subject and object recognition capabilities of these receptors and enantioselectivity were discussed.

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