---
_id: '13369'
abstract:
- lang: eng
text: Arylazopyrazoles represent a new family of molecular photoswitches characterized
by a near-quantitative conversion between two states and long thermal half-lives
of the metastable state. Here, we investigated the behavior of a model arylazopyrazole
in the presence of a self-assembled cage based on Pd–imidazole coordination. Owing
to its high water solubility, the cage can solubilize the E isomer of arylazopyrazole,
which, by itself, is not soluble in water. NMR spectroscopy and X-ray crystallography
have independently demonstrated that each cage can encapsulate two molecules of
E-arylazopyrazole. UV-induced switching to the Z isomer was accompanied by the
release of one of the two guests from the cage and the formation of a 1:1 cage/Z-arylazopyrazole
inclusion complex. DFT calculations suggest that this process involves a dramatic
change in the conformation of the cage. Back-isomerization was induced with green
light and resulted in the initial 1:2 cage/E-arylazopyrazole complex. This back-isomerization
reaction also proceeded in the dark, with a rate significantly higher than in
the absence of the cage.
article_processing_charge: No
article_type: original
author:
- first_name: Anton I
full_name: Hanopolskyi, Anton I
last_name: Hanopolskyi
- first_name: Soumen
full_name: De, Soumen
last_name: De
- first_name: Michał J
full_name: Białek, Michał J
last_name: Białek
- first_name: Yael
full_name: Diskin-Posner, Yael
last_name: Diskin-Posner
- first_name: Liat
full_name: Avram, Liat
last_name: Avram
- first_name: Moran
full_name: Feller, Moran
last_name: Feller
- first_name: Rafal
full_name: Klajn, Rafal
id: 8e84690e-1e48-11ed-a02b-a1e6fb8bb53b
last_name: Klajn
citation:
ama: Hanopolskyi AI, De S, Białek MJ, et al. Reversible switching of arylazopyrazole
within a metal–organic cage. Beilstein Journal of Organic Chemistry. 2019;15:2398-2407.
doi:10.3762/bjoc.15.232
apa: Hanopolskyi, A. I., De, S., Białek, M. J., Diskin-Posner, Y., Avram, L., Feller,
M., & Klajn, R. (2019). Reversible switching of arylazopyrazole within a metal–organic
cage. Beilstein Journal of Organic Chemistry. Beilstein Institut. https://doi.org/10.3762/bjoc.15.232
chicago: Hanopolskyi, Anton I, Soumen De, Michał J Białek, Yael Diskin-Posner, Liat
Avram, Moran Feller, and Rafal Klajn. “Reversible Switching of Arylazopyrazole
within a Metal–Organic Cage.” Beilstein Journal of Organic Chemistry. Beilstein
Institut, 2019. https://doi.org/10.3762/bjoc.15.232.
ieee: A. I. Hanopolskyi et al., “Reversible switching of arylazopyrazole
within a metal–organic cage,” Beilstein Journal of Organic Chemistry, vol.
15. Beilstein Institut, pp. 2398–2407, 2019.
ista: Hanopolskyi AI, De S, Białek MJ, Diskin-Posner Y, Avram L, Feller M, Klajn
R. 2019. Reversible switching of arylazopyrazole within a metal–organic cage.
Beilstein Journal of Organic Chemistry. 15, 2398–2407.
mla: Hanopolskyi, Anton I., et al. “Reversible Switching of Arylazopyrazole within
a Metal–Organic Cage.” Beilstein Journal of Organic Chemistry, vol. 15,
Beilstein Institut, 2019, pp. 2398–407, doi:10.3762/bjoc.15.232.
short: A.I. Hanopolskyi, S. De, M.J. Białek, Y. Diskin-Posner, L. Avram, M. Feller,
R. Klajn, Beilstein Journal of Organic Chemistry 15 (2019) 2398–2407.
date_created: 2023-08-01T09:38:06Z
date_published: 2019-10-10T00:00:00Z
date_updated: 2023-08-07T10:34:56Z
day: '10'
doi: 10.3762/bjoc.15.232
extern: '1'
external_id:
pmid:
- '31666874'
intvolume: ' 15'
keyword:
- Organic Chemistry
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.3762/bjoc.15.232
month: '10'
oa: 1
oa_version: Published Version
page: 2398-2407
pmid: 1
publication: Beilstein Journal of Organic Chemistry
publication_identifier:
eissn:
- 1860-5397
publication_status: published
publisher: Beilstein Institut
quality_controlled: '1'
scopus_import: '1'
status: public
title: Reversible switching of arylazopyrazole within a metal–organic cage
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 15
year: '2019'
...
---
_id: '13370'
abstract:
- lang: eng
text: Efficient isomerization of photochromic molecules often requires conformational
freedom and is typically not available under solvent-free conditions. Here, we
report a general methodology allowing for reversible switching of such molecules
on the surfaces of solid materials. Our method is based on dispersing photochromic
compounds within polysilsesquioxane nanowire networks (PNNs), which can be fabricated
as transparent, highly porous, micrometer-thick layers on various substrates.
We found that azobenzene switching within the PNNs proceeded unusually fast compared
with the same molecules in liquid solvents. Efficient isomerization of another
photochromic system, spiropyran, from a colorless to a colored form was used to
create reversible images in PNN-coated glass. The coloration reaction could be
induced with sunlight and is of interest for developing “smart” windows.
article_processing_charge: No
article_type: original
author:
- first_name: Zonglin
full_name: Chu, Zonglin
last_name: Chu
- first_name: Rafal
full_name: Klajn, Rafal
id: 8e84690e-1e48-11ed-a02b-a1e6fb8bb53b
last_name: Klajn
citation:
ama: Chu Z, Klajn R. Polysilsesquioxane nanowire networks as an “Artificial Solvent”
for reversible operation of photochromic molecules. Nano Letters. 2019;19(10):7106-7111.
doi:10.1021/acs.nanolett.9b02642
apa: Chu, Z., & Klajn, R. (2019). Polysilsesquioxane nanowire networks as an
“Artificial Solvent” for reversible operation of photochromic molecules. Nano
Letters. American Chemical Society. https://doi.org/10.1021/acs.nanolett.9b02642
chicago: Chu, Zonglin, and Rafal Klajn. “Polysilsesquioxane Nanowire Networks as
an ‘Artificial Solvent’ for Reversible Operation of Photochromic Molecules.” Nano
Letters. American Chemical Society, 2019. https://doi.org/10.1021/acs.nanolett.9b02642.
ieee: Z. Chu and R. Klajn, “Polysilsesquioxane nanowire networks as an ‘Artificial
Solvent’ for reversible operation of photochromic molecules,” Nano Letters,
vol. 19, no. 10. American Chemical Society, pp. 7106–7111, 2019.
ista: Chu Z, Klajn R. 2019. Polysilsesquioxane nanowire networks as an “Artificial
Solvent” for reversible operation of photochromic molecules. Nano Letters. 19(10),
7106–7111.
mla: Chu, Zonglin, and Rafal Klajn. “Polysilsesquioxane Nanowire Networks as an
‘Artificial Solvent’ for Reversible Operation of Photochromic Molecules.” Nano
Letters, vol. 19, no. 10, American Chemical Society, 2019, pp. 7106–11, doi:10.1021/acs.nanolett.9b02642.
short: Z. Chu, R. Klajn, Nano Letters 19 (2019) 7106–7111.
date_created: 2023-08-01T09:38:23Z
date_published: 2019-09-20T00:00:00Z
date_updated: 2023-08-07T10:39:34Z
day: '20'
doi: 10.1021/acs.nanolett.9b02642
extern: '1'
external_id:
pmid:
- '31539469'
intvolume: ' 19'
issue: '10'
keyword:
- Mechanical Engineering
- Condensed Matter Physics
- General Materials Science
- General Chemistry
- Bioengineering
language:
- iso: eng
month: '09'
oa_version: None
page: 7106-7111
pmid: 1
publication: Nano Letters
publication_identifier:
eissn:
- 1530-6992
issn:
- 1530-6984
publication_status: published
publisher: American Chemical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Polysilsesquioxane nanowire networks as an “Artificial Solvent” for reversible
operation of photochromic molecules
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 19
year: '2019'
...
---
_id: '13371'
abstract:
- lang: eng
text: Diamondoid nanoporous crystals represent a synthetically challenging class
of materials that typically have been obtained from tetrahedral building blocks.
In this issue of Chem, Stoddart and coworkers demonstrate that it is possible
to generate diamondoid frameworks from a hexacationic building block lacking a
tetrahedral symmetry. These results highlight the great potential of self-assembly
for rapidly transforming small molecules into structurally complex functional
materials.
article_processing_charge: No
article_type: original
author:
- first_name: Michał J.
full_name: Białek, Michał J.
last_name: Białek
- first_name: Rafal
full_name: Klajn, Rafal
id: 8e84690e-1e48-11ed-a02b-a1e6fb8bb53b
last_name: Klajn
citation:
ama: Białek MJ, Klajn R. Diamond grows up. Chem. 2019;5(9):2283-2285. doi:10.1016/j.chempr.2019.08.012
apa: Białek, M. J., & Klajn, R. (2019). Diamond grows up. Chem. Elsevier.
https://doi.org/10.1016/j.chempr.2019.08.012
chicago: Białek, Michał J., and Rafal Klajn. “Diamond Grows Up.” Chem. Elsevier,
2019. https://doi.org/10.1016/j.chempr.2019.08.012.
ieee: M. J. Białek and R. Klajn, “Diamond grows up,” Chem, vol. 5, no. 9.
Elsevier, pp. 2283–2285, 2019.
ista: Białek MJ, Klajn R. 2019. Diamond grows up. Chem. 5(9), 2283–2285.
mla: Białek, Michał J., and Rafal Klajn. “Diamond Grows Up.” Chem, vol. 5,
no. 9, Elsevier, 2019, pp. 2283–85, doi:10.1016/j.chempr.2019.08.012.
short: M.J. Białek, R. Klajn, Chem 5 (2019) 2283–2285.
date_created: 2023-08-01T09:38:38Z
date_published: 2019-09-12T00:00:00Z
date_updated: 2023-08-07T10:46:50Z
day: '12'
doi: 10.1016/j.chempr.2019.08.012
extern: '1'
intvolume: ' 5'
issue: '9'
keyword:
- Materials Chemistry
- Biochemistry (medical)
- General Chemical Engineering
- Environmental Chemistry
- Biochemistry
- General Chemistry
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1016/j.chempr.2019.08.012
month: '09'
oa: 1
oa_version: Published Version
page: 2283-2285
publication: Chem
publication_identifier:
eissn:
- 2451-9294
issn:
- 2451-9308
publication_status: published
publisher: Elsevier
quality_controlled: '1'
scopus_import: '1'
status: public
title: Diamond grows up
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 5
year: '2019'
...
---
_id: '6884'
abstract:
- lang: eng
text: 'In two-player games on graphs, the players move a token through a graph to
produce a finite or infinite path, which determines the qualitative winner or
quantitative payoff of the game. We study bidding games in which the players bid
for the right to move the token. Several bidding rules were studied previously.
In Richman bidding, in each round, the players simultaneously submit bids, and
the higher bidder moves the token and pays the other player. Poorman bidding is
similar except that the winner of the bidding pays the "bank" rather than the
other player. Taxman bidding spans the spectrum between Richman and poorman bidding.
They are parameterized by a constant tau in [0,1]: portion tau of the winning
bid is paid to the other player, and portion 1-tau to the bank. While finite-duration
(reachability) taxman games have been studied before, we present, for the first
time, results on infinite-duration taxman games. It was previously shown that
both Richman and poorman infinite-duration games with qualitative objectives reduce
to reachability games, and we show a similar result here. Our most interesting
results concern quantitative taxman games, namely mean-payoff games, where poorman
and Richman bidding differ significantly. A central quantity in these games is
the ratio between the two players'' initial budgets. While in poorman mean-payoff
games, the optimal payoff of a player depends on the initial ratio, in Richman
bidding, the payoff depends only on the structure of the game. In both games the
optimal payoffs can be found using (different) probabilistic connections with
random-turn games in which in each turn, instead of bidding, a coin is tossed
to determine which player moves. While the value with Richman bidding equals the
value of a random-turn game with an un-biased coin, with poorman bidding, the
bias in the coin is the initial ratio of the budgets. We give a complete classification
of mean-payoff taxman games that is based on a probabilistic connection: the value
of a taxman bidding game with parameter tau and initial ratio r, equals the value
of a random-turn game that uses a coin with bias F(tau, r) = (r+tau * (1-r))/(1+tau).
Thus, we show that Richman bidding is the exception; namely, for every tau <1,
the value of the game depends on the initial ratio. Our proof technique simplifies
and unifies the previous proof techniques for both Richman and poorman bidding. '
alternative_title:
- LIPIcs
article_number: '11'
author:
- first_name: Guy
full_name: Avni, Guy
id: 463C8BC2-F248-11E8-B48F-1D18A9856A87
last_name: Avni
orcid: 0000-0001-5588-8287
- first_name: Thomas A
full_name: Henzinger, Thomas A
id: 40876CD8-F248-11E8-B48F-1D18A9856A87
last_name: Henzinger
orcid: 0000−0002−2985−7724
- first_name: Dorde
full_name: Zikelic, Dorde
id: 294AA7A6-F248-11E8-B48F-1D18A9856A87
last_name: Zikelic
citation:
ama: 'Avni G, Henzinger TA, Zikelic D. Bidding mechanisms in graph games. In: Vol
138. Schloss Dagstuhl - Leibniz-Zentrum für Informatik; 2019. doi:10.4230/LIPICS.MFCS.2019.11'
apa: 'Avni, G., Henzinger, T. A., & Zikelic, D. (2019). Bidding mechanisms in
graph games (Vol. 138). Presented at the MFCS: nternational Symposium on Mathematical
Foundations of Computer Science, Aachen, Germany: Schloss Dagstuhl - Leibniz-Zentrum
für Informatik. https://doi.org/10.4230/LIPICS.MFCS.2019.11'
chicago: Avni, Guy, Thomas A Henzinger, and Dorde Zikelic. “Bidding Mechanisms in
Graph Games,” Vol. 138. Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2019.
https://doi.org/10.4230/LIPICS.MFCS.2019.11.
ieee: 'G. Avni, T. A. Henzinger, and D. Zikelic, “Bidding mechanisms in graph games,”
presented at the MFCS: nternational Symposium on Mathematical Foundations of Computer
Science, Aachen, Germany, 2019, vol. 138.'
ista: 'Avni G, Henzinger TA, Zikelic D. 2019. Bidding mechanisms in graph games.
MFCS: nternational Symposium on Mathematical Foundations of Computer Science,
LIPIcs, vol. 138, 11.'
mla: Avni, Guy, et al. Bidding Mechanisms in Graph Games. Vol. 138, 11, Schloss
Dagstuhl - Leibniz-Zentrum für Informatik, 2019, doi:10.4230/LIPICS.MFCS.2019.11.
short: G. Avni, T.A. Henzinger, D. Zikelic, in:, Schloss Dagstuhl - Leibniz-Zentrum
für Informatik, 2019.
conference:
end_date: 2019-08-30
location: Aachen, Germany
name: 'MFCS: nternational Symposium on Mathematical Foundations of Computer Science'
start_date: 2019-08-26
date_created: 2019-09-18T08:04:26Z
date_published: 2019-08-01T00:00:00Z
date_updated: 2023-08-07T14:08:34Z
day: '01'
ddc:
- '004'
department:
- _id: ToHe
- _id: KrCh
doi: 10.4230/LIPICS.MFCS.2019.11
ec_funded: 1
external_id:
arxiv:
- '1905.03835'
file:
- access_level: open_access
checksum: 6346e116a4f4ed1414174d96d2c4fbd7
content_type: application/pdf
creator: kschuh
date_created: 2019-09-27T11:45:15Z
date_updated: 2020-07-14T12:47:42Z
file_id: '6913'
file_name: 2019_LIPIcs_Avni.pdf
file_size: 554457
relation: main_file
file_date_updated: 2020-07-14T12:47:42Z
has_accepted_license: '1'
intvolume: ' 138'
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
project:
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '665385'
name: International IST Doctoral Program
- _id: 264B3912-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: M02369
name: Formal Methods meets Algorithmic Game Theory
- _id: 25F42A32-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: Z211
name: The Wittgenstein Prize
- _id: 25F2ACDE-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: S11402-N23
name: Rigorous Systems Engineering
publication_status: published
publisher: Schloss Dagstuhl - Leibniz-Zentrum für Informatik
quality_controlled: '1'
related_material:
record:
- id: '9239'
relation: later_version
status: public
scopus_import: 1
status: public
title: Bidding mechanisms in graph games
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: conference
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 138
year: '2019'
...
---
_id: '13471'
abstract:
- lang: eng
text: We perform an extensive numerical study of the evolution of massive binary
systems to predict the peculiar velocities that stars obtain when their companion
collapses and disrupts the system. Our aim is to (i) identify which predictions
are robust against model uncertainties and assess their implications, (ii) investigate
which physical processes leave a clear imprint and may therefore be constrained
observationally, and (iii) provide a suite of publicly available model predictions
to allow for the use of kinematic constraints from the Gaia mission. We find that
22+26−8% of all massive binary systems merge prior to the first core-collapse
in the system. Of the remainder, 86+11−9% become unbound because of the core-collapse.
Remarkably, this rarely produces runaway stars (observationally defined as stars
with velocities above 30 km s−1). These are outnumbered by more than an order
of magnitude by slower unbound companions, or “walkaway stars”. This is a robust
outcome of our simulations and is due to the reversal of the mass ratio prior
to the explosion and widening of the orbit, as we show analytically and numerically.
For stars more massive than 15 M⊙, we estimate that 10+5−8% are walkaways and
only 0.5+1.0−0.4% are runaways, nearly all of which have accreted mass from their
companion. Our findings are consistent with earlier studies; however, the low
runaway fraction we find is in tension with observed fractions of about 10%. Thus,
astrometric data on presently single massive stars can potentially constrain the
physics of massive binary evolution. Finally, we show that the high end of the
mass distributions of runaway stars is very sensitive to the assumed black hole
natal kicks, and we propose this as a potentially stringent test for the explosion
mechanism. We also discuss companions remaining bound that can evolve into X-ray
and gravitational wave sources.
article_number: A66
article_processing_charge: No
article_type: original
author:
- first_name: M.
full_name: Renzo, M.
last_name: Renzo
- first_name: E.
full_name: Zapartas, E.
last_name: Zapartas
- first_name: S. E.
full_name: de Mink, S. E.
last_name: de Mink
- first_name: Ylva Louise Linsdotter
full_name: Götberg, Ylva Louise Linsdotter
id: d0648d0c-0f64-11ee-a2e0-dd0faa2e4f7d
last_name: Götberg
orcid: 0000-0002-6960-6911
- first_name: S.
full_name: Justham, S.
last_name: Justham
- first_name: R. J.
full_name: Farmer, R. J.
last_name: Farmer
- first_name: R. G.
full_name: Izzard, R. G.
last_name: Izzard
- first_name: S.
full_name: Toonen, S.
last_name: Toonen
- first_name: H.
full_name: Sana, H.
last_name: Sana
citation:
ama: Renzo M, Zapartas E, de Mink SE, et al. Massive runaway and walkaway stars.
Astronomy & Astrophysics. 2019;624. doi:10.1051/0004-6361/201833297
apa: Renzo, M., Zapartas, E., de Mink, S. E., Götberg, Y. L. L., Justham, S., Farmer,
R. J., … Sana, H. (2019). Massive runaway and walkaway stars. Astronomy &
Astrophysics. EDP Sciences. https://doi.org/10.1051/0004-6361/201833297
chicago: Renzo, M., E. Zapartas, S. E. de Mink, Ylva Louise Linsdotter Götberg,
S. Justham, R. J. Farmer, R. G. Izzard, S. Toonen, and H. Sana. “Massive Runaway
and Walkaway Stars.” Astronomy & Astrophysics. EDP Sciences, 2019.
https://doi.org/10.1051/0004-6361/201833297.
ieee: M. Renzo et al., “Massive runaway and walkaway stars,” Astronomy
& Astrophysics, vol. 624. EDP Sciences, 2019.
ista: Renzo M, Zapartas E, de Mink SE, Götberg YLL, Justham S, Farmer RJ, Izzard
RG, Toonen S, Sana H. 2019. Massive runaway and walkaway stars. Astronomy &
Astrophysics. 624, A66.
mla: Renzo, M., et al. “Massive Runaway and Walkaway Stars.” Astronomy &
Astrophysics, vol. 624, A66, EDP Sciences, 2019, doi:10.1051/0004-6361/201833297.
short: M. Renzo, E. Zapartas, S.E. de Mink, Y.L.L. Götberg, S. Justham, R.J. Farmer,
R.G. Izzard, S. Toonen, H. Sana, Astronomy & Astrophysics 624 (2019).
date_created: 2023-08-03T10:14:18Z
date_published: 2019-04-11T00:00:00Z
date_updated: 2023-08-09T12:26:08Z
day: '11'
doi: 10.1051/0004-6361/201833297
extern: '1'
external_id:
arxiv:
- '1804.09164'
intvolume: ' 624'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1051/0004-6361/201833297
month: '04'
oa: 1
oa_version: Published Version
publication: Astronomy & Astrophysics
publication_identifier:
eissn:
- 1432-0746
issn:
- 0004-6361
publication_status: published
publisher: EDP Sciences
quality_controlled: '1'
scopus_import: '1'
status: public
title: Massive runaway and walkaway stars
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 624
year: '2019'
...