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Search for "push–pull systems" in Full Text gives 5 result(s) in Beilstein Journal of Organic Chemistry.
Synthesis and fluorescent properties of N(9)-alkylated 2-amino-6-triazolylpurines and 7-deazapurines
Beilstein J. Org. Chem. 2019, 15, 474–489, doi:10.3762/bjoc.15.41
- transformed into the title compounds by CuAAC reaction. The designed compounds belong to the push–pull systems and possess promising fluorescence properties with quantum yields in the range from 28% to 60% in acetonitrile solution. Due to electron-withdrawing properties of purine and 7-deazapurine
- to increased fluorescence quantum yield (74%) in THF solution. The compounds exhibit low cytotoxicity and as such are useful for the cell labelling studies in the future. Keywords: 7-deazapurines; fluorescence; nucleophilic aromatic substitution; purines; push–pull systems; pyrrolo[2,3-d]pyrimidines
- ; Introduction Purine [1][2][3][4][5][6][7] and 7-deazapurine (IUPAC name: pyrrolo[2,3-d]pyrimidine) [8][9][10][11] derivatives have been progressively studied for decades due to their wide range of biological activities and photophysical properties. Currently, the synthesis of push–pull systems is a promising
One-pot three-component synthesis and photophysical characteristics of novel triene merocyanines
Beilstein J. Org. Chem. 2014, 10, 599–612, doi:10.3762/bjoc.10.51
- particular, the electrophilic enyne intermediate [32][40], which is trespassed in the three-component synthesis of solid-state luminescent push–pull indolones 4, intrigued our interest for accessing even triene push–pull systems and to study their electronic properties. Here we report our findings on the
Recent advances towards azobenzene-based light-driven real-time information-transmitting materials
Beilstein J. Org. Chem. 2012, 8, 1003–1017, doi:10.3762/bjoc.8.113
- and 1.3 ms in ethanol, respectively, which decrease further down to 1.1 ms and 644 µs in the presence of phenol (Figure 23). This demonstrates that the generation of push–pull systems by the establishment of hydrogen bonds between phenol groups and the pyridinic nitrogen, with the subsequent
Imidazole as a parent π-conjugated backbone in charge-transfer chromophores
Beilstein J. Org. Chem. 2012, 8, 25–49, doi:10.3762/bjoc.8.4
- Jiri Kulhanek Filip Bures Institute of Organic Chemistry and Technology, Faculty of Chemical Technology, University of Pardubice, Studentská 573, Pardubice, CZ-53210, Czech Republic 10.3762/bjoc.8.4 Abstract Research activities in the field of imidazole-derived push–pull systems featuring
- made in the development and the investigation of new organic push–pull systems. In contrast to inorganic materials, the advent of dipolar (hetero)organic materials with readily polarizable structure was stimulated by their relative ease of synthesis, well-defined structure, chemical and thermal
- electronic behavior of the appended donors and acceptors and the character and length of the π-conjugated linker [4][5][6][7]. Recently, it was also recognized that push–pull systems applicable as organic materials should possess high chemical and thermal robustness, good solubility in common organic
Convenient methods for preparing π-conjugated linkers as building blocks for modular chemistry
Beilstein J. Org. Chem. 2009, 5, No. 11, doi:10.3762/bjoc.5.11
- most important goals of modern material chemistry. Organic chemists steadily attempt to design and synthesize novel and well-defined organic push-pull systems with prospective applications as chromophores for nonlinear optics (NLO) [1][2][3][4][5], dyes [6], electronic and photonic devices [7][8
- formation of the target molecule [19][20] or a separate preparation of the donor as well as the acceptor moieties and their final combination [21][22]. It is already well known that the HOMO/LUMO gap and polarizability of the push-pull systems with the given donors and acceptors can be finely tailored by
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