Search Results

physica status solidi (b), Wiley, Vol. 35, No. 2 ( 1969), p. 965-971

Online Resource

0370-1972, 1521-3951

German

Wiley

1969

208851-4

1481096-7

physica status solidi (b), Wiley, Vol. 38, No. 1 ( 1970-01)

Online Resource

0370-1972, 1521-3951

English

Wiley

1970

208851-4

1481096-7

physica status solidi (b), Wiley, Vol. 38, No. 1 ( 1970-01)

Online Resource

0370-1972, 1521-3951

English

Wiley

1970

208851-4

1481096-7

physica status solidi (b), Wiley, Vol. 35, No. 2 ( 1969), p. 1009-1015

Online Resource

0370-1972, 1521-3951

German

Wiley

1969

208851-4

1481096-7

physica status solidi (b), Wiley, Vol. 38, No. 1 ( 1970-01)

Online Resource

0370-1972, 1521-3951

English

Wiley

1970

208851-4

1481096-7

physica status solidi (b), Wiley, Vol. 35, No. 2 ( 1969), p. 1027-1041

Online Resource

0370-1972, 1521-3951

German

Wiley

1969

208851-4

1481096-7

physica status solidi (b), Wiley, Vol. 35, No. 2 ( 1969), p. 1043-1052

Online Resource

0370-1972, 1521-3951

German

Wiley

1969

208851-4

1481096-7

physica status solidi (b), Wiley, Vol. 38, No. 1 ( 1970-01)

Online Resource

0370-1972, 1521-3951

English

Wiley

1970

208851-4

1481096-7

physica status solidi (b), Wiley, Vol. 38, No. 1 ( 1970-01)

Online Resource

0370-1972, 1521-3951

English

Wiley

1970

208851-4

1481096-7

Angewandte Chemie, Wiley, Vol. 134, No. 13 ( 2022-03-21)

The C−N cross‐coupling of (hetero)aryl (pseudo)halides with NH substrates employing nickel catalysts and organic amine bases represents an emergent strategy for the sustainable synthesis of (hetero)anilines. However, unlike protocols that rely on photoredox/electrochemical/reductant methods within Ni I/III cycles, the reaction steps that comprise a putative Ni 0/II C−N cross‐coupling cycle for a thermally promoted catalyst system using organic amine base have not been elucidated. Here we disclose an efficient new nickel‐catalyzed protocol for the C−N cross‐coupling of amides and 2′‐(pseudo)halide‐substituted acetophenones, for the first time where the (pseudo)halide is chloride or sulfonate, which makes use of the commercial bisphosphine ligand PAd2‐DalPhos ( L4 ) in combination with an organic amine base/halide scavenger, leading to 4‐quinolones. Room‐temperature stoichiometric experiments involving isolated Ni 0, I, and II species support a Ni 0/II pathway, where the combined action of DBU/NaTFA allows for room‐temperature amide cross‐couplings.

Online Resource

0044-8249, 1521-3757

English

Wiley

2022

505868-5

506609-8

514305-6

505872-7

1479266-7

505867-3

506259-7

Angewandte Chemie, Wiley, Vol. 134, No. 12 ( 2022-03-14)

Hollow nanoparticles featuring tunable structures with spatial and chemical specificity are of fundamental interest. However, it remains a significant challenge to design and synthesize asymmetric nanoparticles with controllable topological hollow architecture. Here, a versatile kinetics‐regulated cooperative polymerization induced interfacial selective superassembly strategy is demonstrated to construct a series of asymmetric hollow porous composites (AHPCs) with tunable diameters, architectures and components. The size and number of patches on Janus nanoparticles can be precisely manipulated by the precursor and catalyst content. Notably, AHPCs exhibit excellent photothermal conversion performance under the irradiation of a near infrared (NIR) laser. Thus, AHPCs are utilized as NIR light‐triggered nanovehicles and cargos can be controllably released. In brief, this versatile superassembly approach offers a streamlined and powerful toolset to design diverse asymmetric hollow porous composites.

Online Resource

0044-8249, 1521-3757

English

Wiley

2022

505868-5

506609-8

514305-6

505872-7

1479266-7

505867-3

506259-7

physica status solidi (b), Wiley, Vol. 35, No. 2 ( 1969), p. K107-K110

Online Resource

0370-1972, 1521-3951

German

Wiley

1969

208851-4

1481096-7

physica status solidi (b), Wiley, Vol. 35, No. 2 ( 1969), p. K111-K113

Online Resource

0370-1972, 1521-3951

German

Wiley

1969

208851-4

1481096-7

Angewandte Chemie, Wiley, Vol. 134, No. 7 ( 2022-02-07)

Online Resource

0044-8249, 1521-3757

English

Wiley

2022

505868-5

506609-8

514305-6

505872-7

1479266-7

505867-3

506259-7

Angewandte Chemie, Wiley, Vol. 134, No. 15 ( 2022-04-04)

Synthesis of versatile β tert ‐boryl amides is accomplished by conjunctive cross‐coupling of α‐substituted alkenyl boron “ate” complexes and carbamoyl chloride electrophiles. This reaction can be accomplished in an enantioselective fashion using a palladium catalyst in combination with MandyPhos. The addition of water results in enhanced chemoselectivity for the conjunctive coupling product relative to the Suzuki–Miyaura cross‐coupling product. Transformations of the reaction products were examined as well as application to the synthesis of (+)‐adalinine.

Online Resource

0044-8249, 1521-3757

English

Wiley

2022

505868-5

506609-8

514305-6

505872-7

1479266-7

505867-3

506259-7

physica status solidi (b), Wiley, Vol. 36, No. 2 ( 1969-01), p. 443-445

[Russian Text Ignored].

Online Resource

0370-1972, 1521-3951

English

Wiley

1969

208851-4

1481096-7

Angewandte Chemie, Wiley, Vol. 134, No. 11 ( 2022-03-07)

Online Resource

0044-8249, 1521-3757

English

Wiley

2022

505868-5

506609-8

514305-6

505872-7

1479266-7

505867-3

506259-7

Angewandte Chemie, Wiley, Vol. 134, No. 16 ( 2022-04-11)

The photocatalytic conversion of solar energy offers a potential route to renewable energy, and its efficiency relies on effective charge separation in nanostructured photocatalysts. Understanding the charge‐separation mechanism is key to improving the photocatalytic performance and this has now been enabled by advances in the spatially resolved surface photovoltage (SRSPV) method. In this Review we highlight progress made by SRSPV in mapping charge distributions at the nanoscale and determining the driving forces of charge separation in heterogeneous photocatalyst particles. We discuss how charge separation arising from a built‐in electric field, diffusion, and trapping can be exploited and optimized through photocatalyst design. We also highlight the importance of asymmetric engineering of photocatalysts for effective charge separation. Finally, we provide an outlook on further opportunities that arise from leveraging these insights to guide the rational design of photocatalysts and advance the imaging technique to expand the knowledge of charge separation.

Online Resource

0044-8249, 1521-3757

English

Wiley

2022

505868-5

506609-8

514305-6

505872-7

1479266-7

505867-3

506259-7

physica status solidi (b), Wiley, Vol. 36, No. 1 ( 1969), p. 135-142

Online Resource

0370-1972, 1521-3951

German

Wiley

1969

208851-4

1481096-7

Angewandte Chemie, Wiley, Vol. 134, No. 20 ( 2022-05-09)

In photoswitches that undergo fluorescence switching upon ultraviolet irradiation, photoluminescence and photoisomerization often occur simultaneously, leading to unstable fluorescence properties. Here, we successfully demonstrated reversible solid‐state triple fluorescence switching through “Pump–Trigger” multiphoton manipulation. A novel fluorescence photoswitch, BOSA‐SP, achieved green, yellow, and red fluorescence under excitation by pump light and isomerization induced by trigger light. The energy ranges of photoexcitation and photoisomerization did not overlap, enabling appropriate selection of the multiphoton light for “pump” and “trigger” photoswitching, respectively. Additionally, the large free volume of the spiropyran (SP) moiety in the solid state promoted reversible photoisomerization. Switching between “pump” and “trigger” light is useful for three‐color tunable switching cell imaging, which can be exploited in programmable fluorescence switching. Furthermore, we exploited reversible dual‐fluorescence switching in a single molecular system to successfully achieve two‐color super‐resolution imaging.

Online Resource

0044-8249, 1521-3757

English

Wiley

2022

505868-5

506609-8

514305-6

505872-7

1479266-7

505867-3

506259-7