Search results
Search for "photochromic compound" in Full Text gives 7 result(s) in Beilstein Journal of Organic Chemistry.
Borylated norbornadiene derivatives: Synthesis and application in Pd-catalyzed Suzuki–Miyaura coupling reactions
Beilstein J. Org. Chem. 2022, 18, 368–373, doi:10.3762/bjoc.18.41
- quadricyclane upon irradiation, whereas the back reaction can be accomplished by thermal treatment. Keywords: molecular solar thermal system; Pd-mediated catalysis; photochemistry; photoswitches; quadricyclanes; Introduction Norbornadiene (1a, bicyclo[2.2.1]heptadiene) is a photochromic compound that has
A photochemical determination of luminescence efficiency of upconverting nanoparticles
Beilstein J. Org. Chem. 2019, 15, 2671–2677, doi:10.3762/bjoc.15.260
- (Figure 1) [25][27]. Switching of such diarylethene dyes in both directions (ring closure/coloration or ring opening/discoloration) by UCNPs has been documented for years, with a seminal work reported in 2009 by the team of Branda [28]. In the following we will show how this photochromic compound can be
Ultrafast processes triggered by one- and two-photon excitation of a photochromic and luminescent hydrazone
Beilstein J. Org. Chem. 2019, 15, 2438–2446, doi:10.3762/bjoc.15.236
- patterns, yielding systems that absorb in the red part of the visible spectrum [28]. Recently, a new hydrazone-based photochromic compound, exhibiting outstanding properties, has been synthetized and characterized [29]. This molecule presents fluorescence ON/OFF switching under both one-photon and two
Photoswitchable precision glycooligomers and their lectin binding
Beilstein J. Org. Chem. 2014, 10, 1603–1612, doi:10.3762/bjoc.10.166
- potential perspectives for the sensing and adhesion of bacteriological targets on various substrates. The examples reported so far make use of azobenzene [16], a well-known photochromic compound offering robustness and straightforward preparation. It is able to reversibly isomerize between an extended and
Multichromophoric sugar for fluorescence photoswitching
Beilstein J. Org. Chem. 2014, 10, 1471–1481, doi:10.3762/bjoc.10.151
- previously on 1 [4], this "reverse" FRET explains why the emission of the photochromic moiety is almost absent in the fluorescence spectrum of the dyad 2-OF (Figure 3f). Finally, the limited conversion yield of the molecule 2 under irradiation in the UV (53%), compared to the model photochromic compound 9
- , 159.97, 160.03, 172.02 (Cq) ppm; HRMS–ESI (m/z): [M + H]+ calcd for 1534.7432; found: 1534.7381; [M + 2H]2+ calcd for 767.8753; found: 767.8746. DCM and DAE-functionalized methyl α-D-glucopyranoside 2 To a solution of compound 8 (51.1 mg, 0.033 mmol) in DMF (2 mL) were added the photochromic compound 9
- function. Actually, fluorescence allows the possibility to reach high sensitivity and very low detection levels, down to the single molecule limit, whereas absorption spectroscopy requires a high number of active molecules [2]. If structural and spectral features of the fluorophore and the photochromic
Amino-substituted diazocines as pincer-type photochromic switches
Beilstein J. Org. Chem. 2013, 9, 1–7, doi:10.3762/bjoc.9.1
- ; molecular pincer; molecular switches; photochromic compound; Introduction Azobenzenes probably are the most frequently used photochromic switches in chemistry. They are employed as molecular actuators to drive a number of dynamic machine-like functions [1]. To achieve sophisticated engineering tasks such
On the bromination of the dihydroazulene/vinylheptafulvene photo-/thermoswitch
Beilstein J. Org. Chem. 2012, 8, 958–966, doi:10.3762/bjoc.8.108
- ; photoswitch; vinylheptafulvene; Introduction 1,8a-Dihydroazulene-1,1-dicarbonitrile (DHA, 1) is a yellow photochromic compound, which undergoes a light-induced 10-electron retro-electrocyclization to a red-colored vinylheptafulvene (VHF) (Scheme 1) [1][2][3]. The VHF compound is formed as the s-cis conformer
Other Beilstein-Institut Open Science Activities
