---
res:
  bibo_abstract:
  - Efficient molecular switching in confined spaces is critical for the successful
    development of artificial molecular machines. However, molecular switching events
    often entail large structural changes and therefore require conformational freedom,
    which is typically limited under confinement conditions. Here, we investigated
    the behavior of azobenzene—the key building block of light-controlled molecular
    machines—in a confined environment that is flexible and can adapt its shape to
    that of the bound guest. To this end, we encapsulated several structurally diverse
    azobenzenes within the cavity of a flexible, water-soluble coordination cage,
    and investigated their light-responsive behavior. Using UV/Vis absorption spectroscopy
    and a combination of NMR methods, we showed that each of the encapsulated azobenzenes
    exhibited distinct switching properties. An azobenzene forming a 1:1 host–guest
    inclusion complex could be efficiently photoisomerized in a reversible fashion.
    In contrast, successful switching in inclusion complexes incorporating two azobenzene
    guests was dependent on the availability of free cages in the system, and it involved
    reversible trafficking of azobenzene between the cages. In the absence of extra
    cages, photoswitching was either suppressed or it involved expulsion of azobenzene
    from the cage and consequently its precipitation from the solution. This finding
    was utilized to develop an information storage medium in which messages could
    be written and erased in a reversible fashion using light.@eng
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Dipak
      foaf_name: Samanta, Dipak
      foaf_surname: Samanta
  - foaf_Person:
      foaf_givenName: Julius
      foaf_name: Gemen, Julius
      foaf_surname: Gemen
  - foaf_Person:
      foaf_givenName: Zonglin
      foaf_name: Chu, Zonglin
      foaf_surname: Chu
  - foaf_Person:
      foaf_givenName: Yael
      foaf_name: Diskin-Posner, Yael
      foaf_surname: Diskin-Posner
  - foaf_Person:
      foaf_givenName: Linda J. W.
      foaf_name: Shimon, Linda J. W.
      foaf_surname: Shimon
  - foaf_Person:
      foaf_givenName: Rafal
      foaf_name: Klajn, Rafal
      foaf_surname: Klajn
      foaf_workInfoHomepage: http://www.librecat.org/personId=8e84690e-1e48-11ed-a02b-a1e6fb8bb53b
  bibo_doi: 10.1073/pnas.1712787115
  bibo_issue: '38'
  bibo_volume: 115
  dct_date: 2018^xs_gYear
  dct_isPartOf:
  - http://id.crossref.org/issn/0027-8424
  - http://id.crossref.org/issn/1091-6490
  dct_language: eng
  dct_publisher: Proceedings of the National Academy of Sciences@
  dct_subject:
  - Multidisciplinary
  dct_title: Reversible photoswitching of encapsulated azobenzenes in water@
  fabio_hasPubmedId: '29717041'
...