Optical materials

Optical materials are substances used to manipulate the flow of light. This can include reflecting, absorbing, focusing or splitting an optical beam. The efficiency of a specific material at each task is strongly wavelength dependent, thus a full understanding of the interaction between light and matter is vital.

Latest Research and Reviews

  • Research | | open

    The photomagnetic switching of metal-free liquid-crystalline materials can be important in material design but achieving reversibility is a challenge. Here the authors show phase transition directly from a chiral smectic phase to an isotropic liquid phase triggered by three different external stimuli.

    • Takuya Akita
    • , Yuki Sugiyama
    • , Taira Yamazaki
    • , Sho Nakagami
    • , Daichi Kiyohara
    • , Yoshiaki Uchida
    •  & Norikazu Nishiyama
  • Research |

    Oligomeric siloxanes bearing unconventional fluorescence units, i.e., oxygen, amino, and hydroxyl functionalities, show the intrinsic blue fluorescence that results from oxygen clusters, namely, the CTE mechanism. In addition, intermolecular hydrogen bonds are conducive to the aggregation of the molecular chains and the formation of oxygen clusters.

    • Yuqun Du
    • , Tian Bai
    • , Fan Ding
    • , Hongxia Yan
    • , Yan Zhao
    •  & Weixu Feng
  • Reviews | | open

    Pure organic molecules displaying room-temperature phosphorescence (RTP) are a rapidly emerging class of luminophores. In this Review, the authors discuss the principles for their rational design and development, from the underlying photophysical mechanisms of organic RTP, to enhancement and processing strategies for their practical application.

    • Kenry
    • , Chengjian Chen
    •  & Bin Liu
  • Research | | open

    In molecular solids, photoluminescence of dye molecules is often suppressed owing to excitonic coupling with adjacent chromophores. Here the authors use a computational method to predict the optimal alignment of naphthalenediimide linkers in metal–organic frameworks to afford J-aggregates, and demonstrate the same by fabricating highly photoluminescent thin film.

    • Ritesh Haldar
    • , Antoine Mazel
    • , Marjan Krstić
    • , Qiang Zhang
    • , Marius Jakoby
    • , Ian A. Howard
    • , Bryce S. Richards
    • , Nicole Jung
    • , Denis Jacquemin
    • , Stéphane Diring
    • , Wolfgang Wenzel
    • , Fabrice Odobel
    •  & Christof Wöll
  • Research |

    The birefringent properties of poly(phosphonate)s and poly(thiophosphonate)s possessing various bisphenol structures were investigated. The CR values (orientational birefringence) of the poly(phosphonate)s and the poly(thiophosphonate)s range from −0.3 × 10−9 to + 1.3 × 10−9 Pa−1 and from −0.6 × 10−9 to + 0.8 × 10−9 Pa−1, respectively, which are lower than those of the corresponding bisphenol A-based polymers. The CD values (photoelastic birefringence), which range from + 4.0 × 10−11 to + 4.9 × 10−11 Pa−1, are also lower than those of the corresponding bisphenol A-based polymers.

    • Ryoyu Hifumi
    •  & Ikuyoshi Tomita

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