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Cooperation of Three Chromophores Generates the Water‐Resistant Nitrate Nonlinear Optical Material Bi 3 TeO 6 OH(NO 3 ) 2
Author(s) -
Zhao Sangen,
Yang Yi,
Shen Yaoguo,
Zhao Bingqing,
Li Lina,
Ji Chengmin,
Wu Zhenyue,
Yuan Daqiang,
Lin Zheshuai,
Hong Maochun,
Luo Junhua
Publication year - 2017
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201609876
Subject(s) - chromophore , nitrate , nonlinear optical , octahedron , lone pair , conjugated system , electron , molecule , crystal structure , materials science , chemistry , crystallography , nonlinear system , photochemistry , polymer , physics , organic chemistry , quantum mechanics
Nitrates have long been ignored for practical uses as nonlinear optical (NLO) materials because they are usually very easy to dissolve in water; despite this, the π‐conjugated [NO 3 ] − is among the most desirable NLO‐active structural units. The cooperation of three structural chromophores, namely, Bi 3 O 6 OH short chains with 6s 2 lone pair electrons, distorted TeO 6 octahedra with d 10 electrons, and π‐conjugated [NO 3 ] − triangles, generates a new nitrate NLO material, Bi 3 TeO 6 OH(NO 3 ) 2 , which exhibits an enhanced phase‐matchable NLO response of three times that of KH 2 PO 4 (3×KH 2 PO 4 ), exceeding those of most nitrate NLO materials. Remarkably, the new material did not show obvious weight loss and degeneration of NLO response after being dipped in de‐ionized water for 24 h, indicating that it is highly resistant to water. Theoretical calculations reveal that foreign water molecules cannot stably stay in the crystal lattice of Bi 3 TeO 6 OH(NO 3 ) 2 . These findings highlight the introduction of diverse chromophores into the nitrate systems as an effective approach for developing practical nitrate NLO materials that are of high water‐resistance and good optical performance.