Hydrogen-Bonded 1D Chains Formed from Adamantane-Based Bisphenols and Bispyridines: Influences of Substitution Groups on Phenol Ring
摘要:
Eight cocrystals were formed from three adamantane-based bisphenols with structurally analogous skeletons and three bispyridines. Various 1D chains were constructed through intermolecular OH/N hydrogen bonds. Two crystals containing nonsubstituted bisphenols showed the formation of 1D zigzag chains, which were generated from two bisphenols and two bispyridines in one pitch of the 1D chain. Three crystals including chlorine-substituted bisphenols indicated the generation of 1D zigzag chains, and the pitches of these chains were longer than that of 1D chains composed of nonsubstituted bisphenols. Three crystals containing bromine-substituted bisphenols exhibited different shapes of 1D chains from other crystals, which were consisted of one bisphenol and one bispyridine in one pitch. These 1D chains assembled via intermolecular CH/O and/or CH/pi interactions. The halogen substituents on the adamantane-based bisphenols influence on not only the shapes of 1D chains, but also 2D and 3D structures mainly due to steric hindrances.
This work reports that cyclophanes and their [2]catenanes were synthesized by the SN Ar reactions of disubstituted adamantanes bearing halophenol units and 3,6-dichlorotetrazine in moderate yields. In the crystalline state, the cyclophanes had hexagonal structures with a cavity. The [2]catenanes were composed of two macrocycles that were singly interlocked and orthogonally arranged, indicating the
AROMATIC POLYCARBONATE RESIN PROCESS FOR PRODUCING THE SAME OPTICAL PART MOLDINGMATERIAL AND OPTICAL PART
申请人:IDEMITSU KOSAN CO., LTD.
公开号:EP1469026A1
公开(公告)日:2004-10-20
The present invention relates to an aromatic polycarbonate resin which comprises repetitive units originating in residual groups of a 2,2-bis(4-hydroxyphenyl)adamantane compound and a 1,3-bis(4-hydroxyphenyl)adamantane compound having a substituent on an aromatic ring and which is excellent in a transparency, a heat resistance and a mechanical strength and has a good moldability and a production process for the aromatic polycarbonate resin described above in which the adamantane compounds described above are reacted with a carbonic ester-forming compound. Further, it relates to an aromatic polycarbonate resin which is excellent in an optical characteristic and an optical part prepared by molding the same.
Aromatic polycarbonate resin, process for producing the same, optical-part molding material, and optical part
申请人:Morishita Hironobu
公开号:US20050143553A1
公开(公告)日:2005-06-30
The present invention relates to an aromatic polycarbonate resin which comprises repetitive units originating in residual groups of a 2,2-bis(4-hydroxyphenyl)adamantane compound and a 1,3-bis(4-hydroxyphenyl)adamantane compound having a substituent on an aromatic ring and which is excellent in a transparency, a heat resistance and a mechanical strength and has a good moldability and a production process for the aromatic polycarbonate resin described above in which the adamantane compounds described above are reacted with a carbonic ester-forming compound. Further, it relates to an aromatic polycarbonate resin which is excellent in an optical characteristic and an optical part prepared by molding the same.