TY - JOUR
T1 - Dynamics of proton, ion, molecule, and crystal lattice in functional molecular assemblies
AU - Akutagawa, Tomoyuki
AU - Takeda, Takashi
AU - Hoshino, Norihisa
N1 - Funding Information:
We are very grateful to Prof. Gunzi Saito (Kyoto University), Prof. Takayoshi Nakamura (Hokkaido University), Dr Shunsuke Furukawa (Saitama University), and Prof. Masaichi Saito (Saitama University) for their help in preparing this review. Our research is supported by a Grant-in-Aid for Scientific Research on Innovative Areas ‘p-Figuration’ (JP26102007) and a Grant-in-Aid for Transformative Research Areas (A) ‘‘Condensed Conjugation’’ (JP20H05865), Japan. Additional support is provided by KAKENHI (JP19H00886, JP20H04655, and JP20K05442) from MEXT, a JST CREST Grant (JPMJCR18I4), and the ‘Dynamic Alliance for Open Innovation Bridging Human, Environment and Materials’ from MEXT.
Publisher Copyright:
© The Royal Society of Chemistry.
PY - 2021/9/4
Y1 - 2021/9/4
N2 - Dynamic molecular processes, such as short- or long-range proton (H+) and ion (M+) motions, and molecular rotations in electrical conducting and magnetic molecular assemblies enable the fabrication of electron-H+ (or M+) coupling systems, while crystal lattice dynamics and molecular conformation changes in hydrogen-bonded molecular crystals have been utilised in external stimuli responsive reversible gas-induced gate opening and molecular adsorption/desorption behavior. These dynamics of the polar structural units are responsible for the dielectric measurements. The H+ dynamics are formed from ferroelectrics and H+ conductors, while the dynamic M+ motions of Li+ and Na+ involve ionic conductors and coupling to the conduction electrons. In n-type organic semiconductors, the crystal lattices are modulated by replacing M+ cations, with cations such as Li+, Na+, K+, Rb+, and Cs+. The use of polar rotator or inversion structures such as alkyl amides, m-fluoroanilinium cations, and bowl-shaped trithiasumanene π-cores enables the formation of ferroelectric molecular assemblies. The host-guest molecular systems of ESIPT fluorescent chromic molecules showed interesting molecular sensing properties using various bases, where the dynamic transformation of the crystal lattice and the molecular conformational change were coupled to each other.
AB - Dynamic molecular processes, such as short- or long-range proton (H+) and ion (M+) motions, and molecular rotations in electrical conducting and magnetic molecular assemblies enable the fabrication of electron-H+ (or M+) coupling systems, while crystal lattice dynamics and molecular conformation changes in hydrogen-bonded molecular crystals have been utilised in external stimuli responsive reversible gas-induced gate opening and molecular adsorption/desorption behavior. These dynamics of the polar structural units are responsible for the dielectric measurements. The H+ dynamics are formed from ferroelectrics and H+ conductors, while the dynamic M+ motions of Li+ and Na+ involve ionic conductors and coupling to the conduction electrons. In n-type organic semiconductors, the crystal lattices are modulated by replacing M+ cations, with cations such as Li+, Na+, K+, Rb+, and Cs+. The use of polar rotator or inversion structures such as alkyl amides, m-fluoroanilinium cations, and bowl-shaped trithiasumanene π-cores enables the formation of ferroelectric molecular assemblies. The host-guest molecular systems of ESIPT fluorescent chromic molecules showed interesting molecular sensing properties using various bases, where the dynamic transformation of the crystal lattice and the molecular conformational change were coupled to each other.
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U2 - 10.1039/d1cc01586a
DO - 10.1039/d1cc01586a
M3 - Article
C2 - 34369489
AN - SCOPUS:85114312635
VL - 57
SP - 8378
EP - 8401
JO - Chemical Communications
JF - Chemical Communications
SN - 1359-7345
IS - 68
ER -